ENH : New function into SarSensorModelAdapter

Modules/Adapters/OSSIMAdapters/include/otbSarSensorModelAdapter.h

@@ -95,6 +95,10 @@ public:
 /** Transform world point (lat,lon,hgt) to satellite position (x,y,z) and satellite velocity */
   bool WorldToSatPositionAndVelocity(const Point3DType & inGeoPoint, Point3DType & satellitePosition,  
 				     Point3DType & satelliteVelocity) const;
+  
+  /** Transform line index to satellite position (x,y,z) and satellite velocity */
+  bool LineToSatPositionAndVelocity(const double & line, Point3DType &  satellitePosition,  
+				    Point3DType & satelliteVelocity) const;
 
   /** Transform world point (lat,lon,hgt) to cartesian point (x,y,z) */
   static bool WorldToCartesian(const Point3DType & inGeoPoint, Point3DType & outCartesianPoint);
@@ -104,6 +108,7 @@ public:
   static void DeburstLineToImageLine(const std::vector<std::pair<unsigned long,unsigned long> >& lines, unsigned long deburstLine, unsigned long & imageLine);
 
   
+  
 protected:
   SarSensorModelAdapter();
   virtual ~SarSensorModelAdapter() override;

Modules/Adapters/OSSIMAdapters/src/otbSarSensorModelAdapter.cxx

@@ -216,5 +216,34 @@ bool SarSensorModelAdapter::WorldToSatPositionAndVelocity(const Point3DType & in
   return true;
 }
 
+bool SarSensorModelAdapter::LineToSatPositionAndVelocity(const double & line, Point3DType & satellitePosition,  
+							 Point3DType & satelliteVelocity) const
+{
+  if(m_SensorModel.get() == nullptr)
+    {
+      return false;
+    }
+
+  ossimplugins::ossimSarSensorModel::TimeType azimuthTime;
+  ossimEcefPoint sensorPos;
+  ossimEcefVector sensorVel;
+
+  m_SensorModel->lineToAzimuthTime(line, azimuthTime);
+  m_SensorModel->interpolateSensorPosVel(azimuthTime, sensorPos, sensorVel);
+
+  if(sensorPos.isNan() || sensorVel.isNan())
+    return false;
+
+  satellitePosition[0] = sensorPos.x();
+  satellitePosition[1] = sensorPos.y();
+  satellitePosition[2] = sensorPos.z();
+
+  satelliteVelocity[0] = sensorVel.x();
+  satelliteVelocity[1] = sensorVel.y();
+  satelliteVelocity[2] = sensorVel.z();    
+
+  return true;
+}
+
 
 } // namespace otb

Modules/Adapters/OSSIMAdapters/test/otbSarSensorModelAdapterTest.cxx

@@ -62,7 +62,7 @@ int otbSarSensorModelAdapterTest(int itkNotUsed(argc), char* argv[])
   
 
   otb::SarSensorModelAdapter::Point2DType out1,out2;
-  otb::SarSensorModelAdapter::Point3DType in, out3, out4, out5;
+  otb::SarSensorModelAdapter::Point3DType in, out3, out4, out5, out6, out7;
 
   // GCP 99 from input geom file
   //support_data.geom.gcp[99].world_pt.hgt:  2.238244926818182e+02
@@ -78,7 +78,9 @@ int otbSarSensorModelAdapterTest(int itkNotUsed(argc), char* argv[])
 
   sensorModel->WorldToCartesian(in, out5);
   sensorModel->WorldToSatPositionAndVelocity(in,out3, out4);
-  
+
+  unsigned int ind_Line = 2;
+  sensorModel->LineToSatPositionAndVelocity(ind_Line, out6, out7);
   
   return EXIT_SUCCESS;
 }