//------------------------------------------------------------------------------
const std::vector<RealArray>& USNTwoWayRange::CalculateMeasurementDerivatives(
GmatBase *obj, Integer id)
{
#ifdef DEBUG_DERIVATIVES
MessageInterface::ShowMessage("USNTwoWayRange::CalculateMeasurement"
"Derivatives(%s, %d) called\n", obj->GetName().c_str(), id);
#endif
if (!initialized)
InitializeMeasurement();
GmatBase *objPtr = NULL;
Integer size = obj->GetEstimationParameterSize(id);
Integer objNumber = -1;
#ifdef DEBUG_DERIVATIVES
MessageInterface::ShowMessage(" ParameterSize = %d\n", size);
#endif
if (size <= 0)
throw MeasurementException("The derivative parameter on derivative "
"object " + obj->GetName() + "is not recognized");
// Check to see if obj is a participant
for (UnsignedInt i = 0; i < participants.size(); ++i)
{
if (participants[i] == obj)
{
objPtr = participants[i];
objNumber = i + 1;
#ifdef DEBUG_DERIVATIVES
MessageInterface::ShowMessage(" Participant %s found\n",
objPtr->GetName().c_str());
#endif
break;
}
}
// Or if it is the measurement model for this object
if (obj->IsOfType(Gmat::MEASUREMENT_MODEL))
if (obj->GetRefObject(Gmat::CORE_MEASUREMENT, "") == this)
{
objPtr = obj;
objNumber = 0;
#ifdef DEBUG_DERIVATIVES
MessageInterface::ShowMessage(" The measurement is the object\n",
objPtr->GetName().c_str());
#endif
}
if (objNumber == -1)
throw MeasurementException(
"USNTwoWayRange error - object is neither participant nor "
"measurement model.");
RealArray oneRow;
oneRow.assign(size, 0.0);
currentDerivatives.clear();
currentDerivatives.push_back(oneRow);
Integer parameterID = GetParmIdFromEstID(id, obj);
#ifdef DEBUG_DERIVATIVES
MessageInterface::ShowMessage(" Looking up id %d\n", parameterID);
#endif
if (objPtr != NULL)
{
if (objNumber == 1) // participant number 1, either a GroundStation or a Spacecraft
{
#ifdef DEBUG_DERIVATIVES
MessageInterface::ShowMessage(" Deriv is w.r.t. %s of Participant"
" 1\n", objPtr->GetParameterText(parameterID).c_str());
#endif
if (objPtr->GetParameterText(parameterID) == "Position")
{
throw MeasurementException("Derivative w.r.t. " +
participants[0]->GetName() +" position is not yet implemented");
// CalculateRangeVectorInertial();
// Rvector3 tmp, result;
// Rvector3 rangeUnit = rangeVecInertial.GetUnitVector();
// #ifdef DEBUG_DERIVATIVES
// MessageInterface::ShowMessage(" RVInertial = %.12lf %.12lf %.12lf\n",
// rangeVecInertial[0], rangeVecInertial[1], rangeVecInertial[2]);
// MessageInterface::ShowMessage(" Unit RVInertial = %.12lf %.12lf %.12lf ",
// rangeUnit[0], rangeUnit[1], rangeUnit[2]);
// #endif
// if (stationParticipant)
// {
// for (UnsignedInt i = 0; i < 3; ++i)
// tmp[i] = - rangeUnit[i];
//
// // for a Ground Station, need to rotate to the F1 frame
// result = tmp * R_j2k_1;
// for (UnsignedInt jj = 0; jj < 3; jj++)
// currentDerivatives[0][jj] = result[jj];
// }
// else
// {
// // for a spacecraft participant 1, we don't need the rotation matrices (I33)
// for (UnsignedInt i = 0; i < 3; ++i)
// currentDerivatives[0][i] = - rangeUnit[i];
// }
}
else if (objPtr->GetParameterText(parameterID) == "Velocity")
{
throw MeasurementException("Derivative w.r.t. " +
participants[0]->GetName() +" velocity is not yet implemented");
// for (UnsignedInt i = 0; i < 3; ++i)
// currentDerivatives[0][i] = 0.0;
}
else if (objPtr->GetParameterText(parameterID) == "CartesianX")
{
throw MeasurementException("Derivative w.r.t. " +
participants[0]->GetName() + " CartesianState is not yet implemented");
//
// CalculateRangeVectorInertial();
// Rvector3 tmp, result;
// Rvector3 rangeUnit = rangeVecInertial.GetUnitVector();
// #ifdef DEBUG_DERIVATIVES
// MessageInterface::ShowMessage(" RVInertial = %.12lf %.12lf %.12lf\n",
// rangeVecInertial[0], rangeVecInertial[1], rangeVecInertial[2]);
// MessageInterface::ShowMessage(" Unit RVInertial = %.12lf %.12lf %.12lf ",
// rangeUnit[0], rangeUnit[1], rangeUnit[2]);
// #endif
// if (stationParticipant)
// {
// for (UnsignedInt i = 0; i < size; ++i)
// tmp[i] = - rangeUnit[i];
//
// // for a Ground Station, need to rotate to the F1 frame
// result = tmp * R_j2k_1;
// for (UnsignedInt jj = 0; jj < size; jj++)
// currentDerivatives[0][jj] = result[jj];
// }
// else
// {
// // for a spacecraft participant 1, we don't need the rotation matrices (I33)
// for (UnsignedInt i = 0; i < size; ++i)
// currentDerivatives[0][i] = - rangeUnit[i];
// }
// // velocity all zeroes
// for (UnsignedInt ii = 3; ii < size; ii++)
// currentDerivatives[0][ii] = 0.0;
}
else if (objPtr->GetParameterText(parameterID) == "Bias")
{
for (Integer i = 0; i < size; ++i)
currentDerivatives[0][i] = 1.0;
}
else
{
#ifdef DEBUG_DERIVATIVES
MessageInterface::ShowMessage(" Deriv is w.r.t. something "
"independent, so zero\n");
#endif
for (Integer i = 0; i < size; ++i)
currentDerivatives[0][i] = 0.0;
}
}
else if (objNumber == 2) // participant 2, always a Spacecraft
{
#ifdef DEBUG_DERIVATIVES
MessageInterface::ShowMessage(" Deriv is w.r.t. %s of Participant"
" 2\n", objPtr->GetParameterText(parameterID).c_str());
#endif
if (objPtr->GetParameterText(parameterID) == "Position")
{
// Get the inverse of the orbit STM at the measurement epoch
// Will need adjustment if stm changes
Rmatrix stmInv(6,6);
GetInverseSTM(obj, stmInv);
Rvector3 uplinkRderiv;
GetRangeDerivative(uplinkLeg, stmInv, uplinkRderiv, false, 0, 1,
true, false);
// Downlink leg
Rvector3 downlinkRderiv;
GetRangeDerivative(downlinkLeg, stmInv, downlinkRderiv, false, 0, 1,
true, false);
// Add 'em up per eq 7.52 and 7.53
for (Integer i = 0; i < size; ++i)
currentDerivatives[0][i] =
0.5 * (uplinkRderiv[i] + downlinkRderiv[i]);
#ifdef DEBUG_DERIVATIVES
MessageInterface::ShowMessage("Position Derivative: [%.12lf "
"%.12lf %.12lf]\n", currentDerivatives[0][0],
currentDerivatives[0][1], currentDerivatives[0][2]);
#endif
}
else if (objPtr->GetParameterText(parameterID) == "Velocity")
{
// Get the inverse of the orbit STM at the measurement epoch
// Will need adjustment if stm changes
Rmatrix stmInv(6,6);
GetInverseSTM(obj, stmInv);
Rvector3 uplinkVderiv;
GetRangeDerivative(uplinkLeg, stmInv, uplinkVderiv, false, 0, 1,
false);
// Downlink leg
Rvector3 downlinkVderiv;
GetRangeDerivative(downlinkLeg, stmInv, downlinkVderiv, false, 0, 1,
false);
// Add 'em up per eq 7.52 and 7.53
for (Integer i = 0; i < size; ++i)
currentDerivatives[0][i] =
0.5 * (uplinkVderiv[i] + downlinkVderiv[i]);
#ifdef DEBUG_DERIVATIVES
MessageInterface::ShowMessage("Velocity Derivative: [%.12lf "
"%.12lf %.12lf]\n", currentDerivatives[0][0],
currentDerivatives[0][1], currentDerivatives[0][2]);
#endif
}
else if (objPtr->GetParameterText(parameterID) == "CartesianX")
{
// Get the inverse of the orbit STM at the measurement epoch
// Will need adjustment if stm changes
Rmatrix stmInv(6,6);
GetInverseSTM(obj, stmInv);
Rvector6 uplinkDeriv;
GetRangeDerivative(uplinkLeg, stmInv, uplinkDeriv, false);
// Downlink leg
Rvector6 downlinkDeriv;
GetRangeDerivative(downlinkLeg, stmInv, downlinkDeriv, false);
// Add 'em up per eq 7.52 and 7.53
for (Integer i = 0; i < 6; ++i)
currentDerivatives[0][i] =
0.5 * (uplinkDeriv[i] + downlinkDeriv[i]);
#ifdef DEBUG_DERIVATIVES
MessageInterface::ShowMessage("CartesianState Derivative: "
"[%.12lf %.12lf %.12lf %.12lf %.12lf %.12lf]\n",
currentDerivatives[0][0], currentDerivatives[0][1],
currentDerivatives[0][2], currentDerivatives[0][3],
currentDerivatives[0][4], currentDerivatives[0][5]);
#endif
}
else if (objPtr->GetParameterText(parameterID) == "Bias")
{
for (Integer i = 0; i < size; ++i)
currentDerivatives[0][i] = 1.0;
}
else
{
for (Integer i = 0; i < size; ++i)
currentDerivatives[0][i] = 0.0;
}
}
else if (objNumber == 0) // measurement model
{
#ifdef DEBUG_DERIVATIVES
MessageInterface::ShowMessage(" Deriv is w.r.t. %s of the "
"measurement model\n",
objPtr->GetParameterText(parameterID).c_str());
#endif
if (objPtr->GetParameterText(parameterID) == "Bias")
{
for (Integer i = 0; i < size; ++i)
currentDerivatives[0][i] = 1.0;
}
}
else
{
#ifdef DEBUG_DERIVATIVES
MessageInterface::ShowMessage(" Deriv is w.r.t. %s of a non-"
"Participant\n",
objPtr->GetParameterText(parameterID).c_str());
#endif
for (Integer i = 0; i < size; ++i)
currentDerivatives[0][i] = 0.0;
}
#ifdef DEBUG_DERIVATIVES
MessageInterface::ShowMessage(" Deriv =\n ");
for (Integer i = 0; i < size; ++i)
MessageInterface::ShowMessage(" %.12le",currentDerivatives[0][i]);
MessageInterface::ShowMessage("\n");
#endif
}
return currentDerivatives;
}
//------------------------------------------------------------------------------
const std::vector<RealArray>& TDRSSTwoWayRange::CalculateMeasurementDerivatives(
GmatBase *obj, Integer id)
{
#ifdef DEBUG_DERIVATIVES
MessageInterface::ShowMessage("TDRSSTwoWayRange::CalculateMeasurement"
"Derivatives(%s, %d) called\n", obj->GetName().c_str(), id);
#endif
if (!initialized)
InitializeMeasurement();
GmatBase *objPtr = NULL;
Integer size = obj->GetEstimationParameterSize(id);
Integer objNumber = -1;
#ifdef DEBUG_DERIVATIVES
MessageInterface::ShowMessage(" ParameterSize = %d\n", size);
#endif
if (size <= 0)
throw MeasurementException("The derivative parameter on derivative "
"object " + obj->GetName() + "is not recognized");
// Check to see if obj is a participant
for (UnsignedInt i = 0; i < this->participants.size(); ++i)
{
if (participants[i] == obj)
{
objPtr = participants[i];
objNumber = i + 1;
#ifdef DEBUG_DERIVATIVES
MessageInterface::ShowMessage(" Participant %s found\n",
objPtr->GetName().c_str());
#endif
break;
}
}
// Or if it is the measurement model for this object
if (obj->IsOfType(Gmat::MEASUREMENT_MODEL))
if (obj->GetRefObject(Gmat::CORE_MEASUREMENT, "") == this)
{
objPtr = obj;
objNumber = 0;
#ifdef DEBUG_DERIVATIVES
MessageInterface::ShowMessage(" The measurement is the object\n",
objPtr->GetName().c_str());
#endif
}
if (objNumber == -1)
throw MeasurementException(
"TDRSSTwoWayRange error - object is neither participant nor "
"measurement model.");
RealArray oneRow;
oneRow.assign(size, 0.0);
currentDerivatives.clear();
currentDerivatives.push_back(oneRow);
Integer parameterID = GetParmIdFromEstID(id, obj);
#ifdef DEBUG_DERIVATIVES
MessageInterface::ShowMessage(" Looking up id %d\n", parameterID);
#endif
if (objPtr != NULL)
{
if (objNumber == 1) // participant number 1, either a GroundStation or a Spacecraft
{
#ifdef DEBUG_DERIVATIVES
MessageInterface::ShowMessage(" Deriv is w.r.t. %s of Participant"
" 1\n", objPtr->GetParameterText(parameterID).c_str());
#endif
if (objPtr->GetParameterText(parameterID) == "Position")
{
throw MeasurementException("Derivative w.r.t. " +
participants[0]->GetName() + " Position is not yet implemented");
}
else if (objPtr->GetParameterText(parameterID) == "Velocity")
{
throw MeasurementException("Derivative w.r.t. " +
participants[0]->GetName() + " Velocity is not yet implemented");
}
else if (objPtr->GetParameterText(parameterID) == "CartesianX")
{
throw MeasurementException("Derivative w.r.t. " +
participants[0]->GetName() + " CartesianState is not yet implemented");
}
else if (objPtr->GetParameterText(parameterID) == "Bias")
{
for (Integer i = 0; i < size; ++i)
currentDerivatives[0][i] = 1.0;
}
else
{
#ifdef DEBUG_DERIVATIVES
MessageInterface::ShowMessage(" Deriv is w.r.t. something "
"independent, so zero\n");
#endif
for (UnsignedInt i = 0; i < 3; ++i)
currentDerivatives[0][i] = 0.0;
}
}
else if (objNumber == 2) // participant 2, should be a TDRSS Spacecraft
{
#ifdef DEBUG_DERIVATIVES
MessageInterface::ShowMessage(" Deriv is w.r.t. %s of Participant"
" 1\n", objPtr->GetParameterText(parameterID).c_str());
#endif
if (objPtr->GetParameterText(parameterID) == "Position")
{
throw MeasurementException("Derivative w.r.t. " +
participants[0]->GetName() + " Position is not yet implemented");
}
else if (objPtr->GetParameterText(parameterID) == "Velocity")
{
throw MeasurementException("Derivative w.r.t. " +
participants[0]->GetName() + " Velocity is not yet implemented");
}
else if (objPtr->GetParameterText(parameterID) == "CartesianX")
{
throw MeasurementException("Derivative w.r.t. " +
participants[0]->GetName() + " CartesianState is not yet implemented");
}
else if (objPtr->GetParameterText(parameterID) == "Bias")
{
for (Integer i = 0; i < size; ++i)
currentDerivatives[0][i] = 1.0;
}
else
{
#ifdef DEBUG_DERIVATIVES
MessageInterface::ShowMessage(" Deriv is w.r.t. something "
"independent, so zero\n");
#endif
for (UnsignedInt i = 0; i < 3; ++i)
currentDerivatives[0][i] = 0.0;
}
}
else if (objNumber == 3) // participant 3, always a Spacecraft
{
#ifdef DEBUG_DERIVATIVES
MessageInterface::ShowMessage(" Deriv is w.r.t. %s of Participant"
" 3\n", objPtr->GetParameterText(parameterID).c_str());
#endif
if (objPtr->GetParameterText(parameterID) == "Position")
{
// Get the inverse of the orbit STM at the measurement epoch
// Will need adjustment if stm changes
Rmatrix stmInv(6,6);
GetInverseSTM(obj, stmInv);
Rvector3 forwardlinkRderiv;
GetRangeDerivative(forwardlinkLeg, stmInv, forwardlinkRderiv, false,
1, 2, true, false);
// Downlink leg
Rvector3 backlinkRderiv;
GetRangeDerivative(backlinkLeg, stmInv, backlinkRderiv, false, 1, 2,
true, false);
// Add 'em up per eq tbd
for (Integer i = 0; i < 3; ++i)
currentDerivatives[0][i] =
0.5 * (forwardlinkRderiv[i] + backlinkRderiv[i]);
#ifdef DEBUG_DERIVATIVES
MessageInterface::ShowMessage("Position Derivative: [%.12lf "
"%.12lf %.12lf]\n", currentDerivatives[0][0],
currentDerivatives[0][1], currentDerivatives[0][2]);
#endif
}
else if (objPtr->GetParameterText(parameterID) == "Velocity")
{
// Get the inverse of the orbit STM at the measurement epoch
// Will need adjustment if stm changes
Rmatrix stmInv(6,6);
GetInverseSTM(obj, stmInv);
Rvector3 forwardlinkVderiv;
GetRangeDerivative(forwardlinkLeg, stmInv, forwardlinkVderiv, false,
1, 2, false);
// Downlink leg
Rvector3 backlinkVderiv;
GetRangeDerivative(backlinkLeg, stmInv, backlinkVderiv, false, 1, 2,
false);
// Add 'em up per eq tbd
for (Integer i = 0; i < 3; ++i)
currentDerivatives[0][i] =
0.5 * (forwardlinkVderiv[i] + backlinkVderiv[i]);
#ifdef DEBUG_DERIVATIVES
MessageInterface::ShowMessage("Velocity Derivative: [%.12lf "
"%.12lf %.12lf]\n", currentDerivatives[0][0],
currentDerivatives[0][1], currentDerivatives[0][2]);
#endif
}
else if (objPtr->GetParameterText(parameterID) == "CartesianX")
{
// Get the inverse of the orbit STM at the measurement epoch
// Will need adjustment if stm changes
Rmatrix stmInv(6,6);
GetInverseSTM(obj, stmInv);
Rvector6 forwardlinkDeriv;
GetRangeDerivative(forwardlinkLeg, stmInv, forwardlinkDeriv, false,
1, 2);
// Downlink leg
Rvector6 backlinkDeriv;
GetRangeDerivative(backlinkLeg, stmInv, backlinkDeriv, false, 1, 2);
// Add 'em up per eq tbd
for (Integer i = 0; i < 6; ++i)
currentDerivatives[0][i] =
0.5 * (forwardlinkDeriv[i] + backlinkDeriv[i]);
#ifdef DEBUG_DERIVATIVES
MessageInterface::ShowMessage("CartesianState Derivative: "
"[%.12lf %.12lf %.12lf %.12lf %.12lf %.12lf]\n",
currentDerivatives[0][0], currentDerivatives[0][1],
currentDerivatives[0][2], currentDerivatives[0][3],
currentDerivatives[0][4], currentDerivatives[0][5]);
#endif
}
else if (objPtr->GetParameterText(parameterID) == "Bias")
{
for (Integer i = 0; i < size; ++i)
currentDerivatives[0][i] = 1.0;
}
else
{
for (UnsignedInt i = 0; i < 3; ++i)
currentDerivatives[0][i] = 0.0;
}
}
else if (objNumber == 0) // measurement model
{
#ifdef DEBUG_DERIVATIVES
MessageInterface::ShowMessage(" Deriv is w.r.t. %s of the "
"measurement model\n",
objPtr->GetParameterText(parameterID).c_str());
#endif
if (objPtr->GetParameterText(parameterID) == "Bias")
{
for (Integer i = 0; i < size; ++i)
currentDerivatives[0][i] = 1.0;
}
}
else
{
#ifdef DEBUG_DERIVATIVES
MessageInterface::ShowMessage(" Deriv is w.r.t. %s of a non-"
"Participant\n",
objPtr->GetParameterText(parameterID).c_str());
#endif
for (UnsignedInt i = 0; i < 3; ++i)
currentDerivatives[0][i] = 0.0;
}
#ifdef DEBUG_DERIVATIVES
MessageInterface::ShowMessage(" Deriv =\n ");
for (Integer i = 0; i < size; ++i)
MessageInterface::ShowMessage(" %.12le",currentDerivatives[0][i]);
MessageInterface::ShowMessage("\n");
#endif
}
return currentDerivatives;
}
//------------------------------------------------------------------------------
RealArray Troposphere::Correction()
{
// Determine Re value
if (!solarSystem)
{
MessageInterface::ShowMessage("Troposphere::Correction: Solar System is NULL; Cannot obtain Earth radius\n");
throw MeasurementException("Troposphere::Correction: Solar System is NULL; Cannot obtain Earth radius\n");
}
CelestialBody *earth= solarSystem->GetBody(GmatSolarSystemDefaults::EARTH_NAME);
if (!earth)
{
MessageInterface::ShowMessage("Troposphere::Correction: Cannot obtain Earth radius\n");
throw MeasurementException("Troposphere::Correction: Cannot obtain Earth radius\n");
}
Real Re = earth->GetEquatorialRadius()*GmatMathConstants::KM_TO_M; // get Erath radius in meters
#ifdef DEBUG_TROPOSPHERE_CORRECTION
MessageInterface::ShowMessage("Troposphere::Correction():\n");
MessageInterface::ShowMessage(" temperature = %f K , pressure = %f hPa, humidity = %f\n", temperature, pressure, humidityFraction);
MessageInterface::ShowMessage(" range = %lfm , elevationAngle = %lf radian, waveLenght = %lfm\n", range, elevationAngle, waveLength);
MessageInterface::ShowMessage(" earth radius = %lf m\n",Re);
#endif
// Specify Ce and Crho:
double lambda = waveLength;
double lp2_inv = 1.0 / ((lambda * 1.0E+06)*(lambda * 1.0E+06));
double denom = (173.3 - lp2_inv);
double term1 = 170.2649 / denom;
double Ce = term1*term2;
double term3 = (173.3 + lp2_inv)/denom;
double Crho = Ce * term3;
#ifdef DEBUG_TROPOSPHERE_CORRECTION
MessageInterface::ShowMessage(" Ce = %lf , Crho = %lf\n", Ce, Crho);
#endif
// Specify inputs:
double p = pressure;
double T = temperature;
double fh = humidityFraction;
double E = elevationAngle;
double rho = range;
// refractivities
double N[2];
// compute dry component refractivity
N[0] = 77.624 * p / T;
// compute wet component refractivity
double Tc = T + GmatPhysicalConstants::ABSOLUTE_ZERO_C;
double e = 6.10 * fh * exp(17.15 * Tc /(234.7 + Tc));
N[1] = 371900.0 * e / (T*T) - 12.92 * e/T;
// troposphere heights
double h[2];
// compute dry troposphere height
h[0] = 5.0 * 0.002277 * p / (N[0] * 1.0E-06);
// compute wet troposphere height
h[1] = 5.0 * 0.002277 * e * (1255.0/T + 0.05) / (N[1] * 1.0E-06);
// distances to top of the troposphere
double r[2];
double alpha[9][2];
double beta[7][2];
double cosE = cos(E);
double cosE2 = cosE * cosE;
double sinE = sin(E);
for (int j = 0; j < 2; j++)
{
r[j] = sqrt((Re + h[j])*(Re + h[j]) - (Re*Re*cosE2)) - Re*sinE;
double aj = -1.0 * sinE/h[j];
double bj = - 1.0 * cosE2/(2.0 * h[j] * Re);
alpha[0][j] = 1.0;
alpha[1][j] = 4.0*aj;
alpha[2][j] = 6.0*aj*aj + 4.0*bj;
alpha[3][j] = 4.0*aj*(aj*aj + 3.0*bj);
alpha[4][j] = pow(aj, 4) + 12.0*aj*aj*bj + 6.0*bj*bj;
alpha[5][j] = 4.0*aj*bj*(aj*aj + 3.0*bj);
alpha[6][j] = bj*bj*(6.0*aj*aj + 4.0*bj);
alpha[7][j] = 4.0 * aj * bj*bj*bj;
alpha[8][j] = pow(bj,4);
beta[0][j] = 1.0;
beta[1][j] = 3.0*aj;
beta[2][j] = 3.0*(aj*aj + bj);
beta[3][j] = aj*(aj*aj + 6.0*bj);
beta[4][j] = 3.0*bj*(aj*aj + bj);
beta[5][j] = 3.0 * aj * bj*bj;
beta[6][j] = pow(bj,3);
}
double drho = 0.0;
double dE = 0.0;
for (int j = 0; j < 2; j++)
{
double sum1 = 0.0;
for (int i = 0; i < 9; i++)
{
double ii = (double)i;
double temp1 = alpha[i][j]*pow(r[j],(i+1))/(ii+1.0);
sum1 = sum1 + temp1;
}
double sum2 = 0.0;
for (int k = 0; k < 7; k++)
{
double kk = (double)k;
double temp2 = beta[k][j]*pow(r[j],(k+2))/((kk+1.0)*(kk+2.0)) + beta[k][j]*pow(r[j],(k+1))*(rho - r[j])/(kk+1);
sum2 = sum2 + temp2;
}
drho = drho + N[j] * 1.0E-06 * sum1;
dE = dE + N[j] * 1.0E-06 * sum2 / h[j];
}
drho = Crho * drho;
dE = Ce * 4.0 * cosE * dE/ rho;
dE = dE / GmatMathConstants::RAD_PER_ARCSEC;
RealArray out;
out.push_back(drho);
out.push_back(dE);
out.push_back(drho/GmatPhysicalConstants::SPEED_OF_LIGHT_VACUUM);
#ifdef DEBUG_TROPOSPHERE_CORRECTION
MessageInterface::ShowMessage(" Troposphere correction result:\n");
MessageInterface::ShowMessage(" Range correction = %f m\n", drho);
MessageInterface::ShowMessage(" Elevation angle correction = %f arcsec", dE);
MessageInterface::ShowMessage(" Time correction = %f sec\n", drho/GmatPhysicalConstants::SPEED_OF_LIGHT_VACUUM);
#endif
return out;
}
//------------------------------------------------------------------------------
const std::vector<RealArray>& SnTwoWayRange::CalculateMeasurementDerivatives(
GmatBase *obj, Integer id)
{
throw MeasurementException(
"Measurement derivatives not implemented for SnTwoWayRange");
}
