public void Compute(IAgStkRadarClutterMapComputeParams computeParams)
{
IAgCRSignal signal = computeParams.Signal;
IAgStkRadarClutterPatch clutterPatch = computeParams.ClutterPatch;
double signalPower = signal.Power;
double patchArea = clutterPatch.Area;
double patchClutterCoeff = ConstantCoefficient;
if (ApplyGrazingMask)
{
IAgStkRadarPosVelProvider patchPosVel = clutterPatch.PosVelProvider;
CartVec patchPosCBF = new CartVec(patchPosVel.PositionCBFArray);
IAgStkRadarLink radarLink = computeParams.RadarLink;
IAgStkRadarLinkGeometry radarLinkGeom = radarLink.Geometry;
IAgStkRadarPosVelProvider rdrRcvrPosVel = radarLinkGeom.ReceiveRadarPosVelProvider;
CartVec rcvRdrPosCBF = new CartVec(rdrRcvrPosVel.PositionCBFArray);
CartVec relPosCbf = patchPosCBF - rcvRdrPosCBF;
CartVec surfaceNorm = new CartVec(patchPosVel.SurfaceNormalDeticArray);
double grazingAngle = m_halfPi - CartVec.AngleBetween(surfaceNorm, relPosCbf);
if (grazingAngle < 0.0)
{
grazingAngle = m_halfPi;
}
patchClutterCoeff = patchClutterCoeff * (grazingAngle / m_halfPi);
}
signal.Power += patchClutterCoeff * patchArea;
IAgCRPolarization signalPol = signal.Polarization;
if (signalPol != null)
{
signal.Polarization = computeParams.ConstructOrthogonalPolarization(signalPol);
}
}
public void Compute(IAgStkRadarClutterGeometryComputeParams computeParams)
{
IAgStkRadarLink radarLink = computeParams.RadarLink;
IAgStkRadarLinkGeometry radarLinkGeom = radarLink.Geometry;
IAgStkRadarPosVelProvider xmtRdrPosVel = radarLinkGeom.TransmitRadarPosVelProvider;
CartVec xmtRdrPosCBF = new CartVec(xmtRdrPosVel.PositionCBFArray);
m_cbIntersectComputeParams.SetBasePositionCBF(xmtRdrPosCBF.X, xmtRdrPosCBF.Y, xmtRdrPosCBF.Z);
double sinOffset = Math.Sin(m_halfPi - OffsetAngle);
double cosOffset = Math.Cos(m_halfPi - OffsetAngle);
//============================== First Point Start ======================================================
CartVec pt1Cbf = new CartVec(xmtRdrPosVel.ConvertBodyCartesianToCBFCartesianArray(cosOffset, 0.0, sinOffset));
m_cbIntersectComputeParams.SetDirectionCBF(pt1Cbf.X, pt1Cbf.Y, pt1Cbf.Z);
IAgStkRadarCBIntersectComputeResult pIntersectResult1 = xmtRdrPosVel.ComputeCentralBodyIntersect(m_cbIntersectComputeParams);
if (pIntersectResult1.IntersectionFound)
{
IAgStkRadarClutterPatch clutterPatch = computeParams.ClutterPatches.Add();
CartVec intersectPt = new CartVec(pIntersectResult1.Intercept1CBFArray);
clutterPatch.SetPositionCBF(intersectPt.X, intersectPt.Y, intersectPt.Z);
clutterPatch.Area = PatchArea;
}
//============================== Second Point Start ======================================================
CartVec pt2Cbf = new CartVec(xmtRdrPosVel.ConvertBodyCartesianToCBFCartesianArray(-cosOffset, 0.0, sinOffset));
m_cbIntersectComputeParams.SetDirectionCBF(pt2Cbf.X, pt2Cbf.Y, pt2Cbf.Z);
IAgStkRadarCBIntersectComputeResult pIntersectResult2 = xmtRdrPosVel.ComputeCentralBodyIntersect(m_cbIntersectComputeParams);
if (pIntersectResult2.IntersectionFound)
{
IAgStkRadarClutterPatch clutterPatch = computeParams.ClutterPatches.Add();
CartVec intersectPt = new CartVec(pIntersectResult2.Intercept1CBFArray);
clutterPatch.SetPositionCBF(intersectPt.X, intersectPt.Y, intersectPt.Z);
clutterPatch.Area = PatchArea;
}
//============================== Third Point Start ======================================================
CartVec pt3Cbf = new CartVec(xmtRdrPosVel.ConvertBodyCartesianToCBFCartesianArray(0.0, cosOffset, sinOffset));
m_cbIntersectComputeParams.SetDirectionCBF(pt3Cbf.X, pt3Cbf.Y, pt3Cbf.Z);
IAgStkRadarCBIntersectComputeResult pIntersectResult3 = xmtRdrPosVel.ComputeCentralBodyIntersect(m_cbIntersectComputeParams);
if (pIntersectResult3.IntersectionFound)
{
IAgStkRadarClutterPatch clutterPatch = computeParams.ClutterPatches.Add();
CartVec intersectPt = new CartVec(pIntersectResult3.Intercept1CBFArray);
clutterPatch.SetPositionCBF(intersectPt.X, intersectPt.Y, intersectPt.Z);
clutterPatch.Area = PatchArea;
}
//============================== Fourth Point Start ======================================================
CartVec pt4Cbf = new CartVec(xmtRdrPosVel.ConvertBodyCartesianToCBFCartesianArray(0.0, -cosOffset, sinOffset));
m_cbIntersectComputeParams.SetDirectionCBF(pt4Cbf.X, pt4Cbf.Y, pt4Cbf.Z);
IAgStkRadarCBIntersectComputeResult pIntersectResult4 = xmtRdrPosVel.ComputeCentralBodyIntersect(m_cbIntersectComputeParams);
if (pIntersectResult4.IntersectionFound)
{
IAgStkRadarClutterPatch clutterPatch = computeParams.ClutterPatches.Add();
CartVec intersectPt = new CartVec(pIntersectResult4.Intercept1CBFArray);
clutterPatch.SetPositionCBF(intersectPt.X, intersectPt.Y, intersectPt.Z);
clutterPatch.Area = PatchArea;
}
}
