幅度更换为float

Toolbox/SimulationSARTool/SimulationSAR/GPURFPC.cu

@@ -14,9 +14,13 @@
 /* 机器函数  ****************************************************************************************************************************/
 
 
-extern  __device__ double GPU_getSigma0dB(CUDASigmaParam param, double theta) {//ÏßÐÔÖµ
+__device__ double GPU_getSigma0dB(CUDASigmaParam param, double theta)
-	double sigma = param.p1 + param.p2 * exp(-param.p3 * theta) + param.p4 * cos(param.p5 * theta + param.p6);
+{
-	return  sigma;
+	return param.p1 + param.p2 * exp(-param.p3 * theta) + param.p4 * cos(param.p5 * theta + param.p6);
+}
+
+extern  __device__ float GPU_getSigma0dB(CUDASigmaParam param, float theta) {//ÏßÐÔÖµ
+	return   param.p1 + param.p2 * expf(-param.p3 * theta) + param.p4 * cosf(param.p5 * theta + param.p6);;
 }
 
 
@@ -510,14 +514,19 @@ __global__ void Kernel_Computer_R_amp_NoAntPattern(
 			return;
 		}
 		else {
+
+			RstX = RstX / RstR;
+			RstY = RstY / RstR;
+			RstZ = RstZ / RstR;
+
 			double slopeX = gp.TsX;
 			double slopeY = gp.TsY;
 			double slopeZ = gp.TsZ;
 
 			double slopR = sqrtf(slopeX * slopeX + slopeY * slopeY + slopeZ * slopeZ); //  
 			if (abs(slopR - 0) > 1e-3) {
-				double dotAB = RstX * slopeX + RstY * slopeY + RstZ * slopeZ;
+				float dotAB = RstX * slopeX + RstY * slopeY + RstZ * slopeZ;
-				double localangle = acos(dotAB / (RstR * slopR));
+				float localangle = acosf(dotAB / ( slopR));
 
 				if (localangle < 0 || localangle >= LAMP_CUDA_PI / 2 || isnan(localangle)) {
 					d_temp_R[idx] = 0;
@@ -529,19 +538,24 @@ __global__ void Kernel_Computer_R_amp_NoAntPattern(
 
 				// 计算斜距衰减
 
-				double antDirectR = sqrt(antp.antDirectX * antp.antDirectX
+				float antDirectR = sqrtf(antp.antDirectX * antp.antDirectX
 					+ antp.antDirectY * antp.antDirectY
 					+ antp.antDirectZ * antp.antDirectZ);
 
-				double diectAngle = -1*(RstX*antp.antDirectX+
+				float diectAngle = -1*(RstX*antp.antDirectX+
 					RstY*antp.antDirectY+
-					RstZ*antp.antDirectZ) / (antDirectR* RstR);
+					RstZ*antp.antDirectZ) / (antDirectR );
 
 				diectAngle = acosf(diectAngle);// 弧度制
+				//if (diectAngle * r2d <3) {
+				//	printf("idx: %d, antAngle : %e \n", prfId, diectAngle * r2d);
+				//}
+				
 				diectAngle = diectAngle * GainWeight;
-				double	ampGain = 2 * maxGain * (1 - (diectAngle * diectAngle / 6)
+				float	ampGain = 2 * maxGain * (1 - (diectAngle * diectAngle / 6)
 					+ (diectAngle * diectAngle * diectAngle * diectAngle / 120) 
-					- (diectAngle * diectAngle * diectAngle * diectAngle * diectAngle * diectAngle / 5040));
+					- (diectAngle * diectAngle * diectAngle * diectAngle * diectAngle * diectAngle / 5040)); //dB
+				ampGain = powf(10.0, ampGain / 10.0);
 
 				ampGain = ampGain / (powf(4 * LAMP_CUDA_PI, 2) * powf(RstR, 4)); // 反射强度
 				double sigma = GPU_getSigma0dB(sigma0Params, localangle);
@@ -552,12 +566,9 @@ __global__ void Kernel_Computer_R_amp_NoAntPattern(
 
 				bool isNan = !(isnan(temp_amp) || isnan(temp_R) || isinf(temp_amp) || isinf(temp_R));
 
-
 				d_temp_amps[idx] = temp_amp * isNan;
 				d_temp_R[idx] = temp_R * isNan;
 
-
-
 				return;
 			}
 		}

Toolbox/SimulationSARTool/SimulationSAR/GPURFPC.cuh

@@ -33,12 +33,12 @@ extern "C" struct  GoalState {
 
  
 extern "C" struct  CUDASigmaParam {
-	double p1;
+	float p1;
-	double p2;
+	float p2;
-	double p3;
+	float p3;
-	double p4;
+	float p4;
-	double p5;
+	float p5;
-	double p6;
+	float p6;
 };
 
 extern "C" struct SloperDs
@@ -91,7 +91,7 @@ extern "C" struct RFPCTask
 	cuComplex* d_echoData = nullptr; // »Ø²¨
 	CUDASigmaParam sigma0_cls;
 	double maxGain=48;
-	double GainWeight=300;
+	double GainWeight=20; // 2¶È·¶Î§
 
 	size_t targetnum;
 
@@ -103,6 +103,8 @@ extern  __device__ double GPU_getSigma0dB_params(
 	double theta);
 
 extern  __device__ double GPU_getSigma0dB(CUDASigmaParam param, double theta);
+extern  __device__ float GPU_getSigma0dB(CUDASigmaParam param, float theta);
+
 
 extern  __device__ CUDAVectorEllipsoidal GPU_SatelliteAntDirectNormal(
 	double RstX, double RstY, double RstZ,

Toolbox/SimulationSARTool/SimulationSAR/RFPCProcessCls.cpp

@@ -971,20 +971,20 @@ ErrorCode RFPCProcessCls::RFPCMainProcess_GPU_NoAntPattern(size_t startprfid, si
 	for (const auto& pair : clssigmaParamsDict) {
 		clsCUDASigmaParamsDict.insert(std::pair<long, CUDASigmaParam>(pair.first, 
 			CUDASigmaParam{ 
-				pair.second.p1,
+				float(pair.second.p1),
-				pair.second.p2,
+				float(pair.second.p2),
-				pair.second.p3,
+				float(pair.second.p3),
-				pair.second.p4,
+				float(pair.second.p4),
-				pair.second.p5,
+				float(pair.second.p5),
-				pair.second.p6			
+				float(pair.second.p6)			
 			}));
 		printf("clsid:%d, params: %e,%e,%e,%e,%e,%e \n", pair.first,
-			pair.second.p1,
+			float(pair.second.p1),
-			pair.second.p2,
+			float(pair.second.p2),
-			pair.second.p3,
+			float(pair.second.p3),
-			pair.second.p4,
+			float(pair.second.p4),
-			pair.second.p5,
+			float(pair.second.p5),
-			pair.second.p6
+			float(pair.second.p6)
 		);
 	}