diff --git a/Toolbox/SimulationSARTool/SimulationSAR/BPBasic0_CUDA.cu b/Toolbox/SimulationSARTool/SimulationSAR/BPBasic0_CUDA.cu
index f88f3f7..46c7d37 100644
--- a/Toolbox/SimulationSARTool/SimulationSAR/BPBasic0_CUDA.cu
+++ b/Toolbox/SimulationSARTool/SimulationSAR/BPBasic0_CUDA.cu
@@ -65,16 +65,16 @@ __global__ void processPulseKernel(
 ) {
     //
 
-    long long idx = blockIdx.x * blockDim.x + threadIdx.x;
-    long long pixelcount = nx * ny;
-    if (idx >= pixelcount) return;
+    int64_t idx = int64_t(blockIdx.x) * int64_t(blockDim.x) + int64_t(threadIdx.x);
+    int64_t pixelcount = int64_t(nx) * int64_t(ny);
+    if (idx >= pixelcount) { return; }
 
     //printf("processPulseKernel start!!\n");
 
     //if (x >= nx || y >= ny) return;
     //int idx = x * ny + y;
 
-
+    
     double dx = AntX - x_mat[idx];
     double dy = AntY - y_mat[idx];
     double dz = AntZ - z_mat[idx];
@@ -169,13 +169,12 @@ void bpBasic0CUDA(GPUDATA& data, int flag,double* h_R) {
     printfinfo("fft finished!!\n");
     // ͼ���ؽ�
 
-    
 
     double r_start = data.r_vec[0];
     double dr = (data.r_vec[data.Nfft - 1] - r_start) / (data.Nfft - 1);
     printfinfo("dr = %f\n",dr);
-    long pixelcount = data.nx* data.ny;
-    long grid_size = (pixelcount + BLOCK_SIZE - 1) / BLOCK_SIZE;
+    int64_t pixelcount = int64_t(data.nx)* int64_t(data.ny);
+    int64_t grid_size = (pixelcount + BLOCK_SIZE - 1) / BLOCK_SIZE;
     printfinfo("grid finished!!\n");
 
     //double* d_R = (double*)mallocCUDADevice(sizeof(double) * data.nx * data.ny);
diff --git a/Toolbox/SimulationSARTool/SimulationSAR/TBPImageAlgCls.cpp b/Toolbox/SimulationSARTool/SimulationSAR/TBPImageAlgCls.cpp
index 6d50619..235ad8c 100644
--- a/Toolbox/SimulationSARTool/SimulationSAR/TBPImageAlgCls.cpp
+++ b/Toolbox/SimulationSARTool/SimulationSAR/TBPImageAlgCls.cpp
@@ -119,7 +119,7 @@ ErrorCode TBPImageAlgCls::ProcessGPU()
 	
 	size_t img_rowCont = L1ds->getrowCount();
 	size_t img_colCont = L1ds->getcolCount();
-	size_t block_imgRowCount = Memory1GB / img_colCont / 8 / 3 * 1;// 4GB-- 可以分配内存
+	size_t block_imgRowCount = Memory1GB / img_colCont / 8 / 3 * 12;// 4GB-- 可以分配内存
 
 	gdalImage demgridimg(imgXYZPath);
 	gdalImageComplex im_finalds(outimgDataPath);
@@ -310,7 +310,7 @@ void TBPImageAlgCls::EchoFreqToTime()
 	gdalImageComplex outTimeEchoImg = CreategdalImageComplexNoProj(this->TimeEchoDataPath, this->TimeEchoRowCount, this->TimeEchoColCount, 1);
 
 	// 分块
-	long echoBlockline = Memory1GB / 8 / 2 / outColCount * 3; //1GB
+	long echoBlockline = Memory1GB / 8 / 2 / outColCount *2; //1GB
 	echoBlockline = echoBlockline < 1 ? 1 : echoBlockline;