int main(int argc, char *argv[])
{
LALFrStream *stream;
REAL8TimeSeries *series;
LIGOTimeGPS start;
XLALSetErrorHandler(XLALAbortErrorHandler);
parseargs(argc, argv);
/* get the data */
stream = XLALFrStreamCacheOpen(cache);
XLALGPSSetREAL8(&start, t0 - pad);
series = XLALFrStreamInputREAL8TimeSeries(stream, channel, &start, dt + 2.0 * pad, 0);
XLALFrStreamClose(stream);
/* manipulate the data */
if (srate > 0)
XLALResampleREAL8TimeSeries(series, 1.0 / srate);
if (minfreq > 0)
XLALHighPassREAL8TimeSeries(series, minfreq, 0.9, 8);
if (maxfreq > 0)
XLALLowPassREAL8TimeSeries(series, maxfreq, 0.9, 8);
if (pad > 0)
series = XLALResizeREAL8TimeSeries(series, pad / series->deltaT, dt / series->deltaT);
if (df > 0) { /* we are computing a spectrum */
REAL8FrequencySeries *spectrum;
REAL8FFTPlan *plan;
REAL8Window *window;
size_t seglen = 1.0 / (df * series->deltaT);
/* make sure that the time series length is commensurate with seglen */
if (((2 * series->data->length) % seglen) != 0) {
size_t newlen = ((2 * series->data->length) / seglen) * seglen;
series = XLALResizeREAL8TimeSeries(series, 0, newlen);
}
spectrum = XLALCreateREAL8FrequencySeries(series->name, &series->epoch, 0.0, df, &lalDimensionlessUnit, seglen/2 + 1);
plan = XLALCreateForwardREAL8FFTPlan(seglen, 0);
window = XLALCreateHannREAL8Window(seglen);
XLALREAL8AverageSpectrumWelch(spectrum, series, seglen, seglen/2, window, plan);
if (minfreq > 0 || maxfreq > 0) {
size_t first = minfreq / spectrum->deltaF;
size_t last = maxfreq > 0 ? maxfreq / spectrum->deltaF : spectrum->data->length;
spectrum = XLALResizeREAL8FrequencySeries(spectrum, first, last - first);
}
output_fs(outfile, spectrum);
XLALDestroyREAL8Window(window);
XLALDestroyREAL8FFTPlan(plan);
XLALDestroyREAL8FrequencySeries(spectrum);
} else { /* we are outputting a time series */
output_ts(outfile, series);
}
XLALDestroyREAL8TimeSeries(series);
return 0;
}
int main(int argc, char *argv[])
{
char tstr[32]; // string to hold GPS time -- 31 characters is enough
const double H0 = 0.72 * LAL_H0FAC_SI; // Hubble's constant in seconds
const size_t length = 65536; // number of points in a segment
const size_t stride = length / 2; // number of points in a stride
size_t i, n;
REAL8FrequencySeries *OmegaGW = NULL;
REAL8TimeSeries **seg = NULL;
LIGOTimeGPS epoch;
gsl_rng *rng;
XLALSetErrorHandler(XLALAbortErrorHandler);
parseargs(argc, argv);
XLALGPSSetREAL8(&epoch, tstart);
gsl_rng_env_setup();
rng = gsl_rng_alloc(gsl_rng_default);
OmegaGW = XLALSimSGWBOmegaGWFlatSpectrum(Omega0, flow, srate/length, length/2 + 1);
n = duration * srate;
seg = LALCalloc(numDetectors, sizeof(*seg));
printf("# time (s)");
for (i = 0; i < numDetectors; ++i) {
char name[LALNameLength];
snprintf(name, sizeof(name), "%s:STRAIN", detectors[i].frDetector.prefix);
seg[i] = XLALCreateREAL8TimeSeries(name, &epoch, 0.0, 1.0/srate, &lalStrainUnit, length);
printf("\t%s (strain)", name);
}
printf("\n");
XLALSimSGWB(seg, detectors, numDetectors, 0, OmegaGW, H0, rng); // first time to initilize
while (1) { // infinite loop
size_t j;
for (j = 0; j < stride; ++j, --n) { // output first stride points
LIGOTimeGPS t = seg[0]->epoch;
if (n == 0) // check if we're done
goto end;
printf("%s", XLALGPSToStr(tstr, XLALGPSAdd(&t, j * seg[0]->deltaT)));
for (i = 0; i < numDetectors; ++i)
printf("\t%e", seg[i]->data->data[j]);
printf("\n");
}
XLALSimSGWB(seg, detectors, numDetectors, stride, OmegaGW, H0, rng); // make more data
}
end:
for (i = 0; i < numDetectors; ++i)
XLALDestroyREAL8TimeSeries(seg[i]);
XLALFree(seg);
XLALDestroyREAL8FrequencySeries(OmegaGW);
LALCheckMemoryLeaks();
return 0;
}
int main(int argc, char *argv[])
{
const double H0 = 0.72 * LAL_H0FAC_SI; // Hubble's constant in seconds
const double srate = 16384.0; // sampling rate in Hertz
const size_t length = 65536; // number of points in a segment
const size_t stride = length / 2; // number of points in a stride
size_t i, n;
REAL8FrequencySeries *OmegaGW = NULL;
REAL8TimeSeries **seg = NULL;
LIGOTimeGPS epoch;
gsl_rng *rng;
XLALSetErrorHandler(XLALAbortErrorHandler);
parseargs(argc, argv);
XLALGPSSetREAL8(&epoch, tstart);
gsl_rng_env_setup();
rng = gsl_rng_alloc(gsl_rng_default);
OmegaGW = XLALSimSGWBOmegaGWFlatSpectrum(Omega0, flow, srate/length, length/2 + 1);
n = duration * srate;
seg = LALCalloc(numDetectors, sizeof(*seg));
for (i = 0; i < numDetectors; ++i)
seg[i] = XLALCreateREAL8TimeSeries("STRAIN", &epoch, 0.0, 1.0/srate, &lalStrainUnit, length);
XLALSimSGWB(seg, detectors, numDetectors, 0, OmegaGW, H0, rng); // first time to initilize
while (1) { // infinite loop
double t0 = XLALGPSGetREAL8(&seg[0]->epoch);
size_t j;
for (j = 0; j < stride; ++j, --n) { // output first stride points
if (n == 0) // check if we're done
goto end;
printf("%.9f", t0 + j * seg[0]->deltaT);
for (i = 0; i < numDetectors; ++i)
printf("\t%e", seg[i]->data->data[j]);
printf("\n");
}
XLALSimSGWB(seg, detectors, numDetectors, stride, OmegaGW, H0, rng); // make more data
}
end:
for (i = 0; i < numDetectors; ++i)
XLALDestroyREAL8TimeSeries(seg[i]);
XLALFree(seg);
XLALDestroyREAL8FrequencySeries(OmegaGW);
LALCheckMemoryLeaks();
return 0;
}
REAL8 calculate_snr_from_strain_and_psd_real8( REAL8TimeSeries *strain,
REAL8FrequencySeries *psd,
REAL8 startFreq,
const CHAR ifo[3])
{
REAL8 ret = -1, snrSq, freq, psdValue;
REAL8 deltaF;
REAL8FFTPlan *pfwd;
COMPLEX16FrequencySeries *fftData;
UINT4 k;
/* create the time series */
deltaF = strain->deltaT * strain->data->length;
fftData = XLALCreateCOMPLEX16FrequencySeries( strain->name, &(strain->epoch),
0, deltaF, &lalDimensionlessUnit,
strain->data->length/2 + 1 );
/* perform the fft */
pfwd = XLALCreateForwardREAL8FFTPlan( strain->data->length, 0 );
XLALREAL8TimeFreqFFT( fftData, strain, pfwd );
/* The PSD, if provided, comes in as it was in the original file */
/* since we don't know deltaF until we get here. Interpolate now */
if ( psd )
{
psd = XLALInterpolatePSD(psd, 1.0 / deltaF);
}
/* compute the SNR for initial LIGO at design */
for ( snrSq = 0, k = 0; k < fftData->data->length; k++ )
{
freq = fftData->deltaF * k;
if ( psd )
{
if ( freq < startFreq || k > psd->data->length )
continue;
psdValue = psd->data->data[k];
psdValue /= 9e-46;
}
else if ( ifo[0] == 'V' )
{
if (freq < 35)
continue;
LALVIRGOPsd( NULL, &psdValue, freq );
psdValue /= 9e-46;
}
else
{
if (freq < 40)
continue;
LALLIGOIPsd( NULL, &psdValue, freq );
}
fftData->data->data[k] /= 3e-23;
snrSq += creal(fftData->data->data[k]) * creal(fftData->data->data[k]) / psdValue;
snrSq += cimag(fftData->data->data[k]) * cimag(fftData->data->data[k]) / psdValue;
}
snrSq *= 4*fftData->deltaF;
XLALDestroyREAL8FFTPlan( pfwd );
XLALDestroyCOMPLEX16FrequencySeries( fftData );
if ( psd )
XLALDestroyREAL8FrequencySeries( psd );
ret = sqrt(snrSq);
printf("Obtained snr=%f\n", ret);
return ret;
}
/*============================================================
* FUNCTION definitions
*============================================================*/
int
main(int argc, char *argv[])
{
static LALStatus status; /* LALStatus pointer */
UserVariables_t XLAL_INIT_DECL(uvar);
ConfigVariables_t XLAL_INIT_DECL(cfg);
UINT4 k, numBins, numIFOs, maxNumSFTs, X, alpha;
REAL8 Freq0, dFreq, normPSD;
UINT4 finalBinSize, finalBinStep, finalNumBins;
REAL8Vector *overSFTs = NULL; /* one frequency bin over SFTs */
REAL8Vector *overIFOs = NULL; /* one frequency bin over IFOs */
REAL8Vector *finalPSD = NULL; /* math. operation PSD over SFTs and IFOs */
REAL8Vector *finalNormSFT = NULL; /* normalised SFT power */
vrbflg = 1; /* verbose error-messages */
/* set LAL error-handler */
lal_errhandler = LAL_ERR_EXIT;
/* register and read user variables */
if (initUserVars(argc, argv, &uvar) != XLAL_SUCCESS)
return EXIT_FAILURE;
MultiSFTVector *inputSFTs = NULL;
if ( ( inputSFTs = XLALReadSFTs ( &cfg, &uvar ) ) == NULL )
{
XLALPrintError ("Call to XLALReadSFTs() failed with xlalErrno = %d\n", xlalErrno );
return EXIT_FAILURE;
}
/* clean sfts if required */
if ( XLALUserVarWasSet( &uvar.linefiles ) )
{
RandomParams *randPar=NULL;
FILE *fpRand=NULL;
INT4 seed, ranCount;
if ( (fpRand = fopen("/dev/urandom", "r")) == NULL ) {
fprintf(stderr,"Error in opening /dev/urandom" );
return EXIT_FAILURE;
}
if ( (ranCount = fread(&seed, sizeof(seed), 1, fpRand)) != 1 ) {
fprintf(stderr,"Error in getting random seed" );
return EXIT_FAILURE;
}
LAL_CALL ( LALCreateRandomParams (&status, &randPar, seed), &status );
LAL_CALL( LALRemoveKnownLinesInMultiSFTVector ( &status, inputSFTs, uvar.maxBinsClean, uvar.blocksRngMed, uvar.linefiles, randPar), &status);
LAL_CALL ( LALDestroyRandomParams (&status, &randPar), &status);
fclose(fpRand);
} /* end cleaning */
LogPrintf (LOG_DEBUG, "Computing spectrogram and PSD ... ");
/* get power running-median rngmed[ |data|^2 ] from SFTs */
MultiPSDVector *multiPSD = NULL;
XLAL_CHECK_MAIN( ( multiPSD = XLALNormalizeMultiSFTVect ( inputSFTs, uvar.blocksRngMed, NULL ) ) != NULL, XLAL_EFUNC);
/* restrict this PSD to just the "physical" band if requested using {--Freq, --FreqBand} */
if ( ( XLALCropMultiPSDandSFTVectors ( multiPSD, inputSFTs, cfg.firstBin, cfg.lastBin )) != XLAL_SUCCESS ) {
XLALPrintError ("%s: XLALCropMultiPSDandSFTVectors (inputPSD, inputSFTs, %d, %d) failed with xlalErrno = %d\n", __func__, cfg.firstBin, cfg.lastBin, xlalErrno );
return EXIT_FAILURE;
}
/* start frequency and frequency spacing */
Freq0 = multiPSD->data[0]->data[0].f0;
dFreq = multiPSD->data[0]->data[0].deltaF;
/* number of raw bins in final PSD */
numBins = multiPSD->data[0]->data[0].data->length;
if ( (finalPSD = XLALCreateREAL8Vector ( numBins )) == NULL ) {
LogPrintf (LOG_CRITICAL, "Out of memory!\n");
return EXIT_FAILURE;
}
/* number of IFOs */
numIFOs = multiPSD->length;
if ( (overIFOs = XLALCreateREAL8Vector ( numIFOs )) == NULL ) {
LogPrintf (LOG_CRITICAL, "Out of memory!\n");
return EXIT_FAILURE;
}
/* maximum number of SFTs */
maxNumSFTs = 0;
for (X = 0; X < numIFOs; ++X) {
maxNumSFTs = GSL_MAX(maxNumSFTs, multiPSD->data[X]->length);
}
if ( (overSFTs = XLALCreateREAL8Vector ( maxNumSFTs )) == NULL ) {
LogPrintf (LOG_CRITICAL, "Out of memory!\n");
return EXIT_FAILURE;
}
/* normalize rngmd(power) to get proper *single-sided* PSD: Sn = (2/Tsft) rngmed[|data|^2]] */
normPSD = 2.0 * dFreq;
/* loop over frequency bins in final PSD */
for (k = 0; k < numBins; ++k) {
/* loop over IFOs */
for (X = 0; X < numIFOs; ++X) {
/* number of SFTs for this IFO */
UINT4 numSFTs = multiPSD->data[X]->length;
/* copy PSD frequency bins and normalise multiPSD for later use */
for (alpha = 0; alpha < numSFTs; ++alpha) {
multiPSD->data[X]->data[alpha].data->data[k] *= normPSD;
overSFTs->data[alpha] = multiPSD->data[X]->data[alpha].data->data[k];
}
/* compute math. operation over SFTs for this IFO */
overIFOs->data[X] = math_op(overSFTs->data, numSFTs, uvar.PSDmthopSFTs);
if ( isnan( overIFOs->data[X] ) )
XLAL_ERROR ( EXIT_FAILURE, "Found Not-A-Number in overIFOs->data[X=%d] = NAN ... exiting\n", X );
} /* for IFOs X */
/* compute math. operation over IFOs for this frequency */
finalPSD->data[k] = math_op(overIFOs->data, numIFOs, uvar.PSDmthopIFOs);
if ( isnan ( finalPSD->data[k] ) )
XLAL_ERROR ( EXIT_FAILURE, "Found Not-A-Number in finalPSD->data[k=%d] = NAN ... exiting\n", k );
} /* for freq bins k */
LogPrintfVerbatim ( LOG_DEBUG, "done.\n");
/* compute normalised SFT power */
if (uvar.outputNormSFT) {
LogPrintf (LOG_DEBUG, "Computing normalised SFT power ... ");
if ( (finalNormSFT = XLALCreateREAL8Vector ( numBins )) == NULL ) {
LogPrintf (LOG_CRITICAL, "Out of memory!\n");
return EXIT_FAILURE;
}
/* loop over frequency bins in SFTs */
for (k = 0; k < numBins; ++k) {
/* loop over IFOs */
for (X = 0; X < numIFOs; ++X) {
/* number of SFTs for this IFO */
UINT4 numSFTs = inputSFTs->data[X]->length;
/* compute SFT power */
for (alpha = 0; alpha < numSFTs; ++alpha) {
COMPLEX8 bin = inputSFTs->data[X]->data[alpha].data->data[k];
overSFTs->data[alpha] = crealf(bin)*crealf(bin) + cimagf(bin)*cimagf(bin);
}
/* compute math. operation over SFTs for this IFO */
overIFOs->data[X] = math_op(overSFTs->data, numSFTs, uvar.nSFTmthopSFTs);
if ( isnan ( overIFOs->data[X] ))
XLAL_ERROR ( EXIT_FAILURE, "Found Not-A-Number in overIFOs->data[X=%d] = NAN ... exiting\n", X );
} /* over IFOs */
/* compute math. operation over IFOs for this frequency */
finalNormSFT->data[k] = math_op(overIFOs->data, numIFOs, uvar.nSFTmthopIFOs);
if ( isnan( finalNormSFT->data[k] ) )
XLAL_ERROR ( EXIT_FAILURE, "Found Not-A-Number in bin finalNormSFT->data[k=%d] = NAN ... exiting\n", k );
} /* over freq bins */
LogPrintfVerbatim ( LOG_DEBUG, "done.\n");
}
/* output spectrograms */
if ( uvar.outputSpectBname ) {
LAL_CALL ( LALfwriteSpectrograms ( &status, uvar.outputSpectBname, multiPSD ), &status );
}
/* ---------- if user requested it, output complete MultiPSDVector over IFOs X, timestamps and freq-bins into ASCI file(s) */
if ( uvar.dumpMultiPSDVector ) {
if ( XLALDumpMultiPSDVector ( uvar.outputPSD, multiPSD ) != XLAL_SUCCESS ) {
XLALPrintError ("%s: XLALDumpMultiPSDVector() failed, xlalErrnor = %d\n", __func__, xlalErrno );
return EXIT_FAILURE;
}
} /* if uvar.dumpMultiPSDVector */
/* ----- if requested, compute data-quality factor 'Q' -------------------- */
if ( uvar.outputQ )
{
REAL8FrequencySeries *Q;
if ( (Q = XLALComputeSegmentDataQ ( multiPSD, cfg.dataSegment )) == NULL ) {
XLALPrintError ("%s: XLALComputeSegmentDataQ() failed with xlalErrno = %d\n", __func__, xlalErrno );
return EXIT_FAILURE;
}
if ( XLAL_SUCCESS != XLALWriteREAL8FrequencySeries_to_file ( Q, uvar.outputQ ) ) {
return EXIT_FAILURE;
}
XLALDestroyREAL8FrequencySeries ( Q );
} /* if outputQ */
/* ---------- BINNING if requested ---------- */
/* work out bin size */
if (XLALUserVarWasSet(&uvar.binSize)) {
finalBinSize = uvar.binSize;
}
else if (XLALUserVarWasSet(&uvar.binSizeHz)) {
finalBinSize = (UINT4)floor(uvar.binSizeHz / dFreq + 0.5); /* round to nearest bin */
}
else {
finalBinSize = 1;
}
/* work out bin step */
if (XLALUserVarWasSet(&uvar.binStep)) {
finalBinStep = uvar.binStep;
}
else if (XLALUserVarWasSet(&uvar.binStepHz)) {
finalBinStep = (UINT4)floor(uvar.binStepHz / dFreq + 0.5); /* round to nearest bin */
}
else {
finalBinStep = finalBinSize;
}
/* work out total number of bins */
finalNumBins = (UINT4)floor((numBins - finalBinSize) / finalBinStep) + 1;
/* write final PSD to file */
if (XLALUserVarWasSet(&uvar.outputPSD)) {
FILE *fpOut = NULL;
if ((fpOut = fopen(uvar.outputPSD, "wb")) == NULL) {
LogPrintf ( LOG_CRITICAL, "Unable to open output file %s for writing...exiting \n", uvar.outputPSD );
return EXIT_FAILURE;
}
/* write header info in comments */
if ( XLAL_SUCCESS != XLALOutputVersionString ( fpOut, 0 ) )
XLAL_ERROR ( XLAL_EFUNC );
/* write the command-line */
for (int a = 0; a < argc; a++)
fprintf(fpOut,"%%%% argv[%d]: '%s'\n", a, argv[a]);
/* write column headings */
fprintf(fpOut,"%%%% columns:\n%%%% FreqBinStart");
if (uvar.outFreqBinEnd)
fprintf(fpOut," FreqBinEnd");
fprintf(fpOut," PSD");
if (uvar.outputNormSFT)
fprintf(fpOut," normSFTpower");
fprintf(fpOut,"\n");
LogPrintf(LOG_DEBUG, "Printing PSD to file ... ");
for (k = 0; k < finalNumBins; ++k) {
UINT4 b = k * finalBinStep;
REAL8 f0 = Freq0 + b * dFreq;
REAL8 f1 = f0 + finalBinStep * dFreq;
fprintf(fpOut, "%f", f0);
if (uvar.outFreqBinEnd)
fprintf(fpOut, " %f", f1);
REAL8 psd = math_op(&(finalPSD->data[b]), finalBinSize, uvar.PSDmthopBins);
if ( isnan ( psd ))
XLAL_ERROR ( EXIT_FAILURE, "Found Not-A-Number in psd[k=%d] = NAN ... exiting\n", k );
fprintf(fpOut, " %e", psd);
if (uvar.outputNormSFT) {
REAL8 nsft = math_op(&(finalNormSFT->data[b]), finalBinSize, uvar.nSFTmthopBins);
if ( isnan ( nsft ))
XLAL_ERROR ( EXIT_FAILURE, "Found Not-A-Number in nsft[k=%d] = NAN ... exiting\n", k );
fprintf(fpOut, " %f", nsft);
}
fprintf(fpOut, "\n");
} // k < finalNumBins
LogPrintfVerbatim ( LOG_DEBUG, "done.\n");
fclose(fpOut);
}
/* we are now done with the psd */
XLALDestroyMultiPSDVector ( multiPSD);
XLALDestroyMultiSFTVector ( inputSFTs);
XLALDestroyUserVars();
XLALDestroyREAL8Vector ( overSFTs );
XLALDestroyREAL8Vector ( overIFOs );
XLALDestroyREAL8Vector ( finalPSD );
XLALDestroyREAL8Vector ( finalNormSFT );
LALCheckMemoryLeaks();
return EXIT_SUCCESS;
} /* main() */
/**
* Compute the "data-quality factor" \f$\mathcal{Q}(f) = \sum_X \frac{\epsilon_X}{\mathcal{S}_X(f)}\f$ over the given SFTs.
* The input \a multiPSD is a pre-computed PSD map \f$\mathcal{S}_{X,i}(f)\f$, over IFOs \f$X\f$, SFTs \f$i\f$
* and frequency \f$f\f$.
*
* \return the output is a vector \f$\mathcal{Q}(f)\f$.
*
*/
REAL8FrequencySeries *
XLALComputeSegmentDataQ ( const MultiPSDVector *multiPSDVect, /**< input PSD map over IFOs, SFTs, and frequencies */
LALSeg segment /**< segment to compute Q for */
)
{
/* check input consistency */
if ( multiPSDVect == NULL ) {
XLALPrintError ("%s: NULL input 'multiPSDVect'\n", __func__ );
XLAL_ERROR_NULL ( XLAL_EINVAL );
}
if ( multiPSDVect->length == 0 || multiPSDVect->data==0 ) {
XLALPrintError ("%s: invalid multiPSDVect input (length=0 or data=NULL)\n", __func__ );
XLAL_ERROR_NULL ( XLAL_EINVAL );
}
REAL8 Tseg = XLALGPSDiff ( &segment.end, &segment.start );
if ( Tseg <= 0 ) {
XLALPrintError ("%s: negative segment-duration '%g'\n", __func__, Tseg );
XLAL_ERROR_NULL ( XLAL_EINVAL );
}
REAL8 Tsft = 1.0 / multiPSDVect->data[0]->data[0].deltaF;
REAL8 f0 = multiPSDVect->data[0]->data[0].f0;
REAL8 dFreq = multiPSDVect->data[0]->data[0].deltaF;
UINT4 numFreqs = multiPSDVect->data[0]->data[0].data->length;
REAL8FrequencySeries *Q, *SXinv;
if ( (Q = XLALCreateREAL8FrequencySeries ( "Qfactor", &segment.start, f0, dFreq, &lalHertzUnit, numFreqs )) == NULL ) {
XLALPrintError ("%s: Q = XLALCreateREAL8FrequencySeries(numFreqs=%d) failed with xlalErrno = %d\n", __func__, numFreqs, xlalErrno );
XLAL_ERROR_NULL ( XLAL_EFUNC );
}
if ( (SXinv = XLALCreateREAL8FrequencySeries ( "SXinv", &segment.start, f0, dFreq, &lalHertzUnit, numFreqs )) == NULL ) {
XLALPrintError ("%s: SXinv = XLALCreateREAL8FrequencySeries(numFreqs=%d) failed with xlalErrno = %d\n", __func__, numFreqs, xlalErrno );
XLAL_ERROR_NULL ( XLAL_EFUNC );
}
/* initialize Q-array to zero, as we'll keep adding to it */
memset ( Q->data->data, 0, Q->data->length * sizeof(Q->data->data[0]) );
/* ----- loop over IFOs ----- */
UINT4 numIFOs = multiPSDVect->length;
UINT4 X;
for ( X = 0; X < numIFOs; X ++ )
{
PSDVector *thisPSDVect = multiPSDVect->data[X];
/* initialize SXinv-array to zero, as we'll keep adding to it */
memset ( SXinv->data->data, 0, SXinv->data->length * sizeof(SXinv->data->data[0]) );
UINT4 numSFTsInSeg = 0; /* reset counter of SFTs within this segment */
/* ----- loop over all timestamps ----- */
/* find SFTs inside segment, count them and combine their PSDs */
UINT4 numTS = thisPSDVect->length;
UINT4 iTS;
for ( iTS = 0; iTS < numTS; iTS++ )
{
REAL8FrequencySeries *thisPSD = &thisPSDVect->data[iTS];
/* some internal consistency/paranoia checks */
if ( ( f0 != thisPSD->f0) || ( dFreq != thisPSD->deltaF ) || (numFreqs != thisPSD->data->length ) ) {
XLALPrintError ("%s: %d-th timestamp %f: inconsistent PSDVector: f0 = %g : %g, dFreq = %g : %g, numFreqs = %d : %d \n",
__func__, iTS, XLALGPSGetREAL8( &thisPSD->epoch ), f0, thisPSD->f0, dFreq, thisPSD->deltaF, numFreqs, thisPSD->data->length );
XLAL_ERROR_NULL ( XLAL_EDOM );
}
int cmp = XLALCWGPSinRange( thisPSD->epoch, &segment.start, &segment.end );
if ( cmp < 0 ) /* SFT-end before segment => advance to the next one */
continue;
if ( cmp > 0 ) /* SFT-start past end of segment: ==> terminate loop */
break;
if ( cmp == 0 ) /* this SFT is inside segment */
{
numSFTsInSeg ++;
/* add SXinv(f) += 1/SX_i(f) over all frequencies */
UINT4 iFreq;
for ( iFreq = 0; iFreq < numFreqs; iFreq++ )
SXinv->data->data[iFreq] += 1.0 / thisPSD->data->data[iFreq] ;
} /* if SFT inside segment */
} /* for iTS < numTS */
/* compute duty-cycle eps_X = nX * Tsft / Tseg for this IFO */
REAL8 duty_X = numSFTsInSeg * Tsft / Tseg;
/* sanity check: eps in [0, 1]*/
if ( (duty_X < 0) && (duty_X > 1 ) ) {
XLALPrintError ("%s: something is WRONG: duty-cyle = %g not within [0,1]!\n", __func__, duty_X );
XLAL_ERROR_NULL ( XLAL_EFAILED );
}
/* add duty_X-weighted SXinv to Q */
UINT4 iFreq;
for ( iFreq = 0; iFreq < numFreqs; iFreq ++ )
Q->data->data[iFreq] += duty_X * SXinv->data->data[iFreq] / numSFTsInSeg;
} /* for X < numIFOs */
/* clean up, free memory */
XLALDestroyREAL8FrequencySeries ( SXinv );
return Q;
} /* XLALComputeSegmentDataQ() */
int main( int argc, char *argv[] )
{
LALStatus status = blank_status;
UINT4 k;
UINT4 kLow;
UINT4 kHi;
INT4 numPoints = 524288;
REAL4 fSampling = 2048.;
REAL4 fLow = 70.;
REAL4 fLowInj = 40.;
REAL8 deltaT = 1./fSampling;
REAL8 deltaF = fSampling / numPoints;
REAL4 statValue;
/* vars required to make freq series */
LIGOTimeGPS epoch = { 0, 0 };
LIGOTimeGPS gpsStartTime = {0, 0};
REAL8 f0 = 0.;
REAL8 offset = 0.;
INT8 waveformStartTime = 0;
/* files contain PSD info */
CHAR *injectionFile = NULL;
CHAR *outputFile = NULL;
CHAR *specFileH1 = NULL;
CHAR *specFileH2 = NULL;
CHAR *specFileL1 = NULL;
COMPLEX8Vector *unity = NULL;
const LALUnit strainPerCount = {0,{0,0,0,0,0,1,-1},{0,0,0,0,0,0,0}};
int numInjections = 0;
int numTriggers = 0;
/* template bank simulation variables */
INT4 injSimCount = 0;
SimInspiralTable *injectionHead = NULL;
SimInspiralTable *thisInjection = NULL;
SnglInspiralTable *snglHead = NULL;
SearchSummaryTable *searchSummHead = NULL;
/*SummValueTable *summValueHead = NULL; */
/* raw input data storage */
REAL8FrequencySeries *specH1 = NULL;
REAL8FrequencySeries *specH2 = NULL;
REAL8FrequencySeries *specL1 = NULL;
REAL8FrequencySeries *thisSpec = NULL;
COMPLEX8FrequencySeries *resp = NULL;
COMPLEX8FrequencySeries *detTransDummy = NULL;
REAL4TimeSeries *chan = NULL;
RealFFTPlan *pfwd = NULL;
COMPLEX8FrequencySeries *fftData = NULL;
REAL8 thisSnrsq = 0;
REAL8 thisSnr = 0;
REAL8 thisCombSnr = 0;
REAL8 snrVec[3];
REAL8 dynRange = 1./(3.0e-23);
/* needed for inj */
CoherentGW waveform;
PPNParamStruc ppnParams;
DetectorResponse detector;
InterferometerNumber ifoNumber = LAL_UNKNOWN_IFO;
/* output data */
LIGOLwXMLStream xmlStream;
MetadataTable proctable;
MetadataTable outputTable;
MetadataTable procparams;
CHAR fname[256];
CHAR comment[LIGOMETA_COMMENT_MAX];
ProcessParamsTable *this_proc_param = NULL;
CHAR chanfilename[FILENAME_MAX];
REAL4 sum = 0;
REAL4 bitten_H1 = 0;
REAL4 bitten_H2 = 0;
REAL4 thisCombSnr_H1H2 = 0;
/* create the process and process params tables */
proctable.processTable = (ProcessTable *) calloc( 1, sizeof(ProcessTable) );
XLALGPSTimeNow(&(proctable.processTable->start_time));
XLALPopulateProcessTable(proctable.processTable, PROGRAM_NAME, lalAppsVCSIdentId,
lalAppsVCSIdentStatus, lalAppsVCSIdentDate, 0);
this_proc_param = procparams.processParamsTable = (ProcessParamsTable *)
calloc( 1, sizeof(ProcessParamsTable) );
memset( comment, 0, LIGOMETA_COMMENT_MAX * sizeof(CHAR) );
/* look at input args, write process params where required */
while ( 1 )
{
/* getopt arguments */
static struct option long_options[] =
{
/* these options set a flag */
/* these options do not set a flag */
{"help", no_argument, 0, 'h'},
{"verbose", no_argument, &vrbflg, 1 },
{"version", no_argument, 0, 'V'},
{"spectrum-H1", required_argument, 0, 'a'},
{"spectrum-H2", required_argument, 0, 'b'},
{"spectrum-L1", required_argument, 0, 'c'},
{"inj-file", required_argument, 0, 'd'},
{"comment", required_argument, 0, 'e'},
{"output-file", required_argument, 0, 'f'},
{"coire-flag", no_argument, &coireflg, 1 },
{"ligo-srd", no_argument, &ligosrd, 1 },
{"write-chan", no_argument, &writechan, 1 },
{"inject-overhead", no_argument, &injoverhead, 1 },
{"f-lower", required_argument, 0, 'g'},
{0, 0, 0, 0}
};
int c;
/*
*
* parse command line arguments
*
*/
/* getopt_long stores long option here */
int option_index = 0;
size_t optarg_len;
c = getopt_long_only( argc, argv, "a:b:c:d:e:f:g:hV", long_options, &option_index );
/* detect the end of the options */
if ( c == - 1 )
{
break;
}
switch ( c )
{
case 0:
/* if this option set a flag, do nothing else now */
if ( long_options[option_index].flag != 0 )
{
break;
}
else
{
fprintf( stderr, "error parsing option %s with argument %s\n",
long_options[option_index].name, optarg );
exit( 1 );
}
break;
case 'h':
fprintf( stderr, USAGE );
exit( 0 );
break;
case 'a':
/* create storage for the spectrum file name */
optarg_len = strlen( optarg ) + 1;
specFileH1 = (CHAR *) calloc( optarg_len, sizeof(CHAR));
memcpy( specFileH1, optarg, optarg_len );
ADD_PROCESS_PARAM( "string", "%s", optarg );
break;
case 'b':
/* create storage for the spectrum file name */
optarg_len = strlen( optarg ) + 1;
specFileH2 = (CHAR *) calloc( optarg_len, sizeof(CHAR));
memcpy( specFileH2, optarg, optarg_len );
ADD_PROCESS_PARAM( "string", "%s", optarg );
break;
case 'c':
/* create storage for the spectrum file name */
optarg_len = strlen( optarg ) + 1;
specFileL1 = (CHAR *) calloc( optarg_len, sizeof(CHAR));
memcpy( specFileL1, optarg, optarg_len );
ADD_PROCESS_PARAM( "string", "%s", optarg );
break;
case 'd':
/* create storage for the injection file name */
optarg_len = strlen( optarg ) + 1;
injectionFile = (CHAR *) calloc( optarg_len, sizeof(CHAR));
memcpy( injectionFile, optarg, optarg_len );
ADD_PROCESS_PARAM( "string", "%s", optarg );
break;
case 'f':
/* create storage for the output file name */
optarg_len = strlen( optarg ) + 1;
outputFile = (CHAR *) calloc( optarg_len, sizeof(CHAR));
memcpy( outputFile, optarg, optarg_len );
ADD_PROCESS_PARAM( "string", "%s", optarg );
break;
case 'g':
fLow = (INT4) atof( optarg );
if ( fLow < 40 )
{
fprintf( stderr, "invalid argument to --%s:\n"
"f-lower must be > 40Hz (%e specified)\n",
long_options[option_index].name, fLow );
exit( 1 );
}
ADD_PROCESS_PARAM( "float", "%e", fLow );
break;
case 'e':
if ( strlen( optarg ) > LIGOMETA_COMMENT_MAX - 1 )
{
fprintf( stderr, "invalid argument to --%s:\n"
"comment must be less than %d characters\n",
long_options[option_index].name, LIGOMETA_COMMENT_MAX );
exit( 1 );
}
else
{
snprintf( comment, LIGOMETA_COMMENT_MAX, "%s", optarg);
}
break;
case 'V':
/* print version information and exit */
fprintf( stdout, "calculation of expected SNR of injections\n"
"Gareth Jones\n");
XLALOutputVersionString(stderr, 0);
exit( 0 );
break;
default:
fprintf( stderr, "unknown error while parsing options\n" );
fprintf( stderr, USAGE );
exit( 1 );
}
}
if ( optind < argc )
{
fprintf( stderr, "extraneous command line arguments:\n" );
while ( optind < argc )
{
fprintf ( stderr, "%s\n", argv[optind++] );
}
exit( 1 );
}
/* check the input arguments */
if ( injectionFile == NULL )
{
fprintf( stderr, "Must specify the --injection-file\n" );
exit( 1 );
}
if ( outputFile == NULL )
{
fprintf( stderr, "Must specify the --output-file\n" );
exit( 1 );
}
if ( !ligosrd && specFileH1 == NULL )
{
fprintf( stderr, "Must specify the --spectrum-H1\n" );
exit( 1 );
}
if ( !ligosrd && specFileH2 == NULL )
{
fprintf( stderr, "Must specify the --spectrum-H2\n" );
exit( 1 );
}
if ( !ligosrd && specFileL1 == NULL )
{
fprintf( stderr, "Must specify the --spectrum-L1\n" );
exit( 1 );
}
if ( ligosrd && (specFileH1 || specFileH2 || specFileL1 ))
{
fprintf( stdout, "WARNING: using LIGOI SRD power spectral density \n" );
}
if ( vrbflg ){
fprintf( stdout, "injection file is %s\n", injectionFile );
fprintf( stdout, "output file is %s\n", outputFile );
fprintf( stdout, "H1 spec file is %s\n", specFileH1 );
fprintf( stdout, "H2 spec file is %s\n", specFileH2 );
fprintf( stdout, "L1 spec file is %s\n", specFileL1 );
}
/* create vector for H1, H2 and L1 spectrums */
specH1 = XLALCreateREAL8FrequencySeries ( "",&epoch, f0, deltaF, &lalADCCountUnit, (numPoints / 2 + 1) );
specH2 = XLALCreateREAL8FrequencySeries ( "",&epoch, f0, deltaF, &lalADCCountUnit, (numPoints / 2 + 1) );
specL1 = XLALCreateREAL8FrequencySeries ( "",&epoch, f0, deltaF, &lalADCCountUnit, (numPoints / 2 + 1) );
if (!specH1 || !specH2 || !specL1){
XLALDestroyREAL8FrequencySeries ( specH1 );
XLALDestroyREAL8FrequencySeries ( specH2 );
XLALDestroyREAL8FrequencySeries ( specL1 );
XLALPrintError("failure allocating H1, H2 and L1 spectra");
exit(1);
}
if (!ligosrd){
/* read in H1 spectrum */
LAL_CALL( LALDReadFrequencySeries(&status, specH1, specFileH1), &status );
if ( vrbflg ){
fprintf( stdout, "read in H1 spec file\n" );
fflush( stdout );
}
/* read in H2 spectrum */
LAL_CALL( LALDReadFrequencySeries(&status, specH2, specFileH2), &status );
if ( vrbflg ){
fprintf( stdout, "read in H2 spec file\n" );
fflush( stdout );
}
/* read in L1 spectrum */
LAL_CALL( LALDReadFrequencySeries(&status, specL1, specFileL1), &status );
if ( vrbflg ){
fprintf( stdout, "read in L1 spec file\n" );
fflush( stdout );
}
}
chan = XLALCreateREAL4TimeSeries( "", &epoch, f0, deltaT,
&lalADCCountUnit, numPoints );
if ( !chan ){
XLALPrintError("failure allocating chan");
exit(1);
}
/*
*
* set up the response function
*
*/
resp = XLALCreateCOMPLEX8FrequencySeries( chan->name,
&chan->epoch, f0, deltaF, &strainPerCount, (numPoints / 2 + 1) );
if ( !resp ){
XLALPrintError("failure allocating response function");
exit(1);
}
/* create vector that will contain detector.transfer info, since this
* is constant I calculate it once outside of all the loops and pass it
* in to detector.transfer when required
*/
detTransDummy = XLALCreateCOMPLEX8FrequencySeries( chan->name, &chan->epoch,
f0, deltaF, &strainPerCount, (numPoints / 2 + 1) );
if ( !detTransDummy ){
XLALPrintError("failure allocating detector.transfer info");
exit(1);
}
/* invert the response function to get the transfer function */
unity = XLALCreateCOMPLEX8Vector( resp->data->length );
for ( k = 0; k < unity->length; ++k )
{
unity->data[k] = 1.0;
}
/* set response */
for ( k = 0; k < resp->data->length; ++k )
{
resp->data->data[k] = 1.0;
}
XLALCCVectorDivide( detTransDummy->data, unity, resp->data );
XLALDestroyCOMPLEX8Vector( unity );
/* read in injections from injection file */
/* set endtime to 0 so that we read in all events */
if ( vrbflg ) fprintf( stdout, "Reading sim_inspiral table of %s\n", injectionFile );
LAL_CALL(numInjections = SimInspiralTableFromLIGOLw( &injectionHead, injectionFile, 0, 0), &status);
if ( vrbflg ) fprintf( stdout, "Read %d injections from sim_inspiral table of %s\n",
numInjections, injectionFile );
if (coireflg){
if ( vrbflg ) fprintf( stdout, "Reading sngl_inspiral table of %s\n", injectionFile );
LAL_CALL(numTriggers = LALSnglInspiralTableFromLIGOLw(&snglHead, injectionFile, 0, -1), &status);
if ( vrbflg ) fprintf( stdout, "Read %d triggers from sngl_inspiral table of %s\n",
numTriggers, injectionFile );
if ( vrbflg ) {
fprintf( stdout, "Reading search_summary table of %s ...", injectionFile );
fflush( stdout );
}
searchSummHead = XLALSearchSummaryTableFromLIGOLw (injectionFile);
if ( vrbflg ) fprintf( stdout, " done\n");
}
/* make sure we start at head of linked list */
thisInjection = injectionHead;
/* setting fixed waveform injection parameters */
memset( &ppnParams, 0, sizeof(PPNParamStruc) );
ppnParams.deltaT = deltaT;
ppnParams.lengthIn = 0;
ppnParams.ppn = NULL;
/* loop over injections */
injSimCount = 0;
do
{
fprintf( stdout, "injection %d/%d\n", injSimCount+1, numInjections );
/* reset waveform structure */
memset( &waveform, 0, sizeof(CoherentGW) );
/* reset chan structure */
memset( chan->data->data, 0, chan->data->length * sizeof(REAL4) );
if (thisInjection->f_lower == 0){
fprintf( stdout, "WARNING: f_lower in sim_inpiral = 0, ");
fprintf( stdout, "changing this to %e\n ", fLowInj);
thisInjection->f_lower = fLowInj;
}
/* create the waveform, amp, freq phase etc */
LAL_CALL( LALGenerateInspiral(&status, &waveform, thisInjection, &ppnParams), &status);
if (vrbflg) fprintf( stdout, "ppnParams.tc %e\n ", ppnParams.tc);
statValue = 0.;
/* calc lower index for integration */
kLow = ceil(fLow / deltaF);
if ( vrbflg ) {
fprintf( stdout, "starting integration to find SNR at frequency %e ", fLow);
fprintf( stdout, "at index %d \n", kLow);
}
/* calc upper index for integration */
kHi = floor(fSampling / (2. * deltaF));
if ( vrbflg ) {
fprintf( stdout, "ending integration to find SNR at frequency %e ", fSampling / 2.);
fprintf( stdout, "at index %d \n", kHi);
}
/* loop over ifo */
for ( ifoNumber = 1; ifoNumber < 4; ifoNumber++ )
{
/* allocate memory and copy the parameters describing the freq series */
memset( &detector, 0, sizeof( DetectorResponse ) );
detector.site = (LALDetector *) LALMalloc( sizeof(LALDetector) );
if (injoverhead){
if ( vrbflg ) fprintf( stdout, "WARNING: perform overhead injections\n");
/* setting detector.site to NULL causes SimulateCoherentGW to
* perform overhead injections */
detector.site = NULL;
}
else {
/* if not overhead, set detector.site using ifonumber */
XLALReturnDetector( detector.site, ifoNumber );
}
switch ( ifoNumber )
{
case 1:
if ( vrbflg ) fprintf( stdout, "looking at H1 \n");
thisSpec = specH1;
break;
case 2:
if ( vrbflg ) fprintf( stdout, "looking at H2 \n");
thisSpec = specH2;
break;
case 3:
if ( vrbflg ) fprintf( stdout, "looking at L1 \n");
thisSpec = specL1;
break;
default:
fprintf( stderr, "Error: ifoNumber %d does not correspond to H1, H2 or L1: \n", ifoNumber );
exit( 1 );
}
/* get the gps start time of the signal to inject */
waveformStartTime = XLALGPSToINT8NS( &(thisInjection->geocent_end_time) );
waveformStartTime -= (INT8) ( 1000000000.0 * ppnParams.tc );
offset = (chan->data->length / 2.0) * chan->deltaT;
gpsStartTime.gpsSeconds = thisInjection->geocent_end_time.gpsSeconds - offset;
gpsStartTime.gpsNanoSeconds = thisInjection->geocent_end_time.gpsNanoSeconds;
chan->epoch = gpsStartTime;
if (vrbflg) fprintf(stdout, "offset start time of injection by %f seconds \n", offset );
/* is this okay? copying in detector transfer which so far only contains response info */
detector.transfer = detTransDummy;
XLALUnitInvert( &(detector.transfer->sampleUnits), &(resp->sampleUnits) );
/* set the start times for injection */
XLALINT8NSToGPS( &(waveform.a->epoch), waveformStartTime );
memcpy(&(waveform.f->epoch), &(waveform.a->epoch), sizeof(LIGOTimeGPS) );
memcpy(&(waveform.phi->epoch), &(waveform.a->epoch), sizeof(LIGOTimeGPS) );
/* perform the injection */
LAL_CALL( LALSimulateCoherentGW(&status, chan, &waveform, &detector ), &status);
if (writechan){
/* write out channel data */
if (vrbflg) fprintf(stdout, "writing channel data to file... \n" );
switch ( ifoNumber )
{
case 1:
snprintf( chanfilename, FILENAME_MAX, "chanTest_H1_inj%d.dat", injSimCount+1);
if (vrbflg) fprintf( stdout, "writing H1 channel time series out to %s\n", chanfilename );
LALSPrintTimeSeries(chan, chanfilename );
break;
case 2:
snprintf( chanfilename, FILENAME_MAX, "chanTest_H2_inj%d.dat", injSimCount+1);
if (vrbflg) fprintf( stdout, "writing H2 channel time series out to %s\n", chanfilename );
LALSPrintTimeSeries(chan, chanfilename );
break;
case 3:
snprintf( chanfilename, FILENAME_MAX, "chanTest_L1_inj%d.dat", injSimCount+1);
if (vrbflg) fprintf( stdout, "writing L1 channel time series out to %s\n", chanfilename );
LALSPrintTimeSeries(chan, chanfilename );
break;
default:
fprintf( stderr, "Error: ifoNumber %d does not correspond to H1, H2 or L1: \n", ifoNumber );
exit( 1 );
}
}
LAL_CALL( LALCreateForwardRealFFTPlan( &status, &pfwd, chan->data->length, 0), &status);
fftData = XLALCreateCOMPLEX8FrequencySeries( chan->name, &chan->epoch, f0, deltaF,
&lalDimensionlessUnit, (numPoints / 2 + 1) );
if ( !fftData ){
XLALPrintError("failure allocating fftData");
exit(1);
}
LAL_CALL( LALTimeFreqRealFFT( &status, fftData, chan, pfwd ), &status);
LAL_CALL( LALDestroyRealFFTPlan( &status, &pfwd ), &status);
pfwd = NULL;
/* compute the SNR */
thisSnrsq = 0;
/* avoid f=0 part of psd */
if (ligosrd){
if (vrbflg) fprintf( stdout, "using LIGOI PSD \n");
for ( k = kLow; k < kHi; k++ )
{
REAL8 freq;
REAL8 sim_psd_value;
freq = fftData->deltaF * k;
LALLIGOIPsd( NULL, &sim_psd_value, freq );
thisSnrsq += ((crealf(fftData->data->data[k]) * dynRange) *
(crealf(fftData->data->data[k]) * dynRange)) / sim_psd_value;
thisSnrsq += ((cimagf(fftData->data->data[k]) * dynRange) *
(cimagf(fftData->data->data[k]) * dynRange)) / sim_psd_value;
}
}
else {
if (vrbflg) fprintf( stdout, "using input spectra \n");
for ( k = kLow; k < kHi; k++ )
{
thisSnrsq += ((crealf(fftData->data->data[k]) * dynRange) *
(crealf(fftData->data->data[k]) * dynRange)) /
(thisSpec->data->data[k] * dynRange * dynRange);
thisSnrsq += ((cimagf(fftData->data->data[k]) * dynRange) *
(cimagf(fftData->data->data[k]) * dynRange)) /
(thisSpec->data->data[k] * dynRange * dynRange);
}
}
thisSnrsq *= 4*fftData->deltaF;
thisSnr = pow(thisSnrsq, 0.5);
/* Note indexing on snrVec, ifoNumber runs from 1..3 to get source correct,
* we must index snrVec 0..2
*/
snrVec[ifoNumber-1] = thisSnr;
XLALDestroyCOMPLEX8FrequencySeries(fftData);
if ( vrbflg ){
fprintf( stdout, "thisSnrsq %e\n", thisSnrsq );
fprintf( stdout, "snrVec %e\n", snrVec[ifoNumber-1] );
fflush( stdout );
}
/* sum thisSnrsq to eventually get combined snr*/
statValue += thisSnrsq;
/* free some memory */
if (detector.transfer) detector.transfer = NULL;
if ( detector.site ) {LALFree( detector.site); detector.site = NULL;}
}
/* end loop over ifo */
destroyCoherentGW( &waveform );
/* store inverse eff snrs in eff_dist columns */
thisInjection->eff_dist_h = 1./snrVec[0];
thisInjection->eff_dist_g = 1./snrVec[1];
thisInjection->eff_dist_l = 1./snrVec[2];
/* store inverse sum of squares snr in eff_dist_t */
thisCombSnr = pow(statValue, 0.5);
if ( vrbflg ) fprintf( stdout, "thisCombSnr %e\n", thisCombSnr);
thisInjection->eff_dist_t = 1./thisCombSnr;
/* calc inverse bittenL snr for H1H2 and store in eff_dist_v */
thisCombSnr_H1H2 = 0.;
sum = snrVec[0] * snrVec[0] + snrVec[1] * snrVec[1];
bitten_H1 = 3 * snrVec[0] -3;
bitten_H2 = 3 * snrVec[1] -3;
if (sum < bitten_H1){
thisCombSnr_H1H2 = sum;
}
else
{
thisCombSnr_H1H2 = bitten_H1;
}
if (bitten_H2 < thisCombSnr_H1H2){
thisCombSnr_H1H2 = bitten_H2;
}
thisInjection->eff_dist_v = 1./thisCombSnr_H1H2;
/* increment the bank sim sim_inspiral table if necessary */
if ( injectionHead )
{
thisInjection = thisInjection->next;
}
} while ( ++injSimCount < numInjections );
/* end loop over injections */
/* try opening, writing and closing an xml file */
/* open the output xml file */
memset( &xmlStream, 0, sizeof(LIGOLwXMLStream) );
snprintf( fname, sizeof(fname), "%s", outputFile);
LAL_CALL( LALOpenLIGOLwXMLFile ( &status, &xmlStream, fname), &status);
/* write out the process and process params tables */
if ( vrbflg ) fprintf( stdout, "process... " );
XLALGPSTimeNow(&(proctable.processTable->end_time));
LAL_CALL( LALBeginLIGOLwXMLTable( &status, &xmlStream, process_table ), &status );
LAL_CALL( LALWriteLIGOLwXMLTable( &status, &xmlStream, proctable, process_table ), &status );
LAL_CALL( LALEndLIGOLwXMLTable ( &status, &xmlStream ), &status );
free( proctable.processTable );
/* Just being pedantic here ... */
proctable.processTable = NULL;
/* free the unused process param entry */
this_proc_param = procparams.processParamsTable;
procparams.processParamsTable = procparams.processParamsTable->next;
free( this_proc_param );
this_proc_param = NULL;
/* write the process params table */
if ( vrbflg ) fprintf( stdout, "process_params... " );
LAL_CALL( LALBeginLIGOLwXMLTable( &status, &xmlStream, process_params_table ), &status );
LAL_CALL( LALWriteLIGOLwXMLTable( &status, &xmlStream, procparams, process_params_table ), &status );
LAL_CALL( LALEndLIGOLwXMLTable ( &status, &xmlStream ), &status );
/* write the search summary table */
if ( coireflg ){
if ( vrbflg ) fprintf( stdout, "search_summary... " );
outputTable.searchSummaryTable = searchSummHead;
LAL_CALL( LALBeginLIGOLwXMLTable( &status, &xmlStream, search_summary_table), &status);
LAL_CALL( LALWriteLIGOLwXMLTable( &status, &xmlStream, outputTable, search_summary_table), &status);
LAL_CALL( LALEndLIGOLwXMLTable ( &status, &xmlStream), &status);
}
/* write the sim inspiral table */
if ( vrbflg ) fprintf( stdout, "sim_inspiral... " );
outputTable.simInspiralTable = injectionHead;
LAL_CALL( LALBeginLIGOLwXMLTable( &status, &xmlStream, sim_inspiral_table), &status);
LAL_CALL( LALWriteLIGOLwXMLTable( &status, &xmlStream, outputTable, sim_inspiral_table), &status);
LAL_CALL( LALEndLIGOLwXMLTable ( &status, &xmlStream), &status);
/* write the sngl inspiral table */
if ( coireflg ){
if ( vrbflg ) fprintf( stdout, "sngl_inspiral... " );
outputTable.snglInspiralTable = snglHead;
LAL_CALL( LALBeginLIGOLwXMLTable( &status, &xmlStream, sngl_inspiral_table), &status);
LAL_CALL( LALWriteLIGOLwXMLTable( &status, &xmlStream, outputTable, sngl_inspiral_table), &status);
LAL_CALL( LALEndLIGOLwXMLTable ( &status, &xmlStream), &status);
}
/* close the xml file */
LAL_CALL( LALCloseLIGOLwXMLFile ( &status, &xmlStream), &status);
/* Freeing memory */
XLALDestroyREAL4TimeSeries(chan);
XLALDestroyCOMPLEX8FrequencySeries(resp);
XLALDestroyCOMPLEX8FrequencySeries(detTransDummy);
XLALDestroyREAL8FrequencySeries ( specH1 );
XLALDestroyREAL8FrequencySeries ( specH2 );
XLALDestroyREAL8FrequencySeries ( specL1 );
free( specFileH1 );
specFileH1 = NULL;
free( specFileH2 );
specFileH2 = NULL;
free( specFileL1 );
specFileL1 = NULL;
free( injectionFile );
injectionFile = NULL;
/* free the process params */
while( procparams.processParamsTable )
{
this_proc_param = procparams.processParamsTable;
procparams.processParamsTable = this_proc_param->next;
free( this_proc_param );
this_proc_param = NULL;
}
/* free the sim inspiral tables */
while ( injectionHead )
{
thisInjection = injectionHead;
injectionHead = injectionHead->next;
LALFree( thisInjection );
}
/*check for memory leaks */
LALCheckMemoryLeaks();
exit( 0 );
}
int main(int argc, char *argv[])
{
char tstr[32]; // string to hold GPS time -- 31 characters is enough
size_t length;
size_t stride;
size_t n;
REAL8FrequencySeries *psd = NULL;
REAL8TimeSeries *seg = NULL;
gsl_rng *rng;
XLALSetErrorHandler(XLALAbortErrorHandler);
parseargs(argc, argv);
if (overrideflow > 0.0)
flow = overrideflow;
length = segdur * srate;
stride = length / 2;
/* handle 0noise case first */
if (strcmp(detector, "0noise") == 0) {
/* just print out a bunch of zeros */
if (psdonly) {
double deltaF = srate / length;
size_t klow = flow / deltaF;
size_t k;
fprintf(stdout, "# freq (s^-1)\tPSD (strain^2 s)\n");
for (k = klow; k < length/2 - 1; ++k)
fprintf(stdout, "%e\t%e\n", k * deltaF, 0.0);
} else {
size_t j;
fprintf(stdout, "# time (s)\tNOISE (strain)\n");
n = duration * srate;
for (j = 0; j < n; ++j) {
LIGOTimeGPS t = tstart;
fprintf(stdout, "%s\t%e\n", XLALGPSToStr(tstr, XLALGPSAdd(&t, j/srate)), 0.0);
}
}
return 0;
}
gsl_rng_env_setup();
rng = gsl_rng_alloc(gsl_rng_default);
psd = XLALCreateREAL8FrequencySeries(detector, &tstart, 0.0, srate/length, &strainSquaredPerHertzUnit, length/2 + 1);
if (asdfile)
XLALSimNoisePSDFromFile(psd, flow, asdfile);
else if (official && opsdfunc)
opsdfunc(psd, flow);
else
XLALSimNoisePSD(psd, flow, psdfunc);
if (verbose) {
double Mpc = 1e6 * LAL_PC_SI;
double horizon_distance;
fprintf(stderr, "%-39s %s\n", "detector: ", detector);
fprintf(stderr, "%-39s %g Hz\n", "low-frequency cutoff: ", flow);
horizon_distance = XLALMeasureStandardSirenHorizonDistance(psd, flow, -1.0);
fprintf(stderr, "%-39s %g Mpc\n", "standard siren horizon distance: ", horizon_distance / Mpc);
fprintf(stderr, "%-39s %g Mpc\n", "sense-monitor range: ", horizon_distance / Mpc / LAL_HORIZON_DISTANCE_OVER_SENSEMON_RANGE);
fprintf(stderr, "%-39s GSL_RNG_TYPE=%s\n", "GSL random number generator:", gsl_rng_name(rng));
fprintf(stderr, "%-39s GSL_RNG_SEED=%lu\n", "GSL random number seed:", gsl_rng_default_seed);
}
if (psdonly) { // output PSD and exit
size_t klow = flow / psd->deltaF;
size_t k;
fprintf(stdout, "# freq (s^-1)\tPSD (strain^2 s)\n");
for (k = klow; k < length/2 - 1; ++k)
fprintf(stdout, "%e\t%e\n", k * psd->deltaF, sqrt(psd->data->data[k]));
goto end;
}
n = duration * srate;
seg = XLALCreateREAL8TimeSeries("STRAIN", &tstart, 0.0, 1.0/srate, &lalStrainUnit, length);
XLALSimNoise(seg, 0, psd, rng); // first time to initialize
fprintf(stdout, "# time (s)\tNOISE (strain)\n");
while (1) { // infinite loop
size_t j;
for (j = 0; j < stride; ++j, --n) { // output first stride points
LIGOTimeGPS t = seg->epoch;
if (n == 0) // check if we're done
goto end;
fprintf(stdout, "%s\t%e\n", XLALGPSToStr(tstr, XLALGPSAdd(&t, j * seg->deltaT)), seg->data->data[j]);
}
XLALSimNoise(seg, stride, psd, rng); // make more data
}
end:
XLALDestroyREAL8TimeSeries(seg);
XLALDestroyREAL8FrequencySeries(psd);
LALCheckMemoryLeaks();
return 0;
}