diff --git a/blh2enu.h b/blh2enu.h
index 51fb08f..5690b96 100644
--- a/blh2enu.h
+++ b/blh2enu.h
@@ -9,7 +9,7 @@ typedef struct
    double E;
    double N;
    double U;
-}blh2enu, *pblh2enu;
+}blh2enu;
 
 /* -------------------------------------------------------------------------- */
 /// @brief 将大地高坐标转换为站心坐标
@@ -21,18 +21,17 @@ typedef struct
 /// @param deltaz 卫星到站心的z坐标差值
 /// @return 返回自定义结构体类型包含E, N, U成员
 /* -------------------------------------------------------------------------- */
-pblh2enu BLH2ENU(pblh2enu blh2enu, 
-                 double stationB, double stationL,
-                 double deltax, double deltay, double deltaz)
+blh2enu BLH2ENU(blh2enu blh2enu, 
+                double stationB, double stationL,
+                double deltax, double deltay, double deltaz)
 {
     double sinB = sin(stationB);
     double cosB = cos(stationB);
     double sinL = sin(stationL);
     double cosL = cos(stationL);
-    blh2enu = (pblh2enu)malloc(sizeof(pblh2enu));
-    blh2enu->E = -     sinL*(deltax) +      cosL*(deltay);
-    blh2enu->N = -sinB*cosL*(deltax) - sinB*sinL*(deltay) + cosB*(deltaz);
-    blh2enu->U =  cosB*cosL*(deltax) + cosB*sinL*(deltay) + sinB*(deltaz);
+    blh2enu.E = -     sinL*(deltax) +      cosL*(deltay);
+    blh2enu.N = -sinB*cosL*(deltax) - sinB*sinL*(deltay) + cosB*(deltaz);
+    blh2enu.U =  cosB*cosL*(deltax) + cosB*sinL*(deltay) + sinB*(deltaz);
 
     return blh2enu;
 }
diff --git a/cal_mod.h b/cal_mod.h
index 3de02b1..61b8bc5 100644
--- a/cal_mod.h
+++ b/cal_mod.h
@@ -69,22 +69,17 @@ int sat_gps_pos_clac(FILE * result_file,
                      int o_epochnum, int gps_satnum)
     {   int progress = 0;
         int count = 0;
-        pxyz2blh tem1 = NULL;
-        pxyz2blh tem2 = NULL;
-        pblh2enu tem3 = NULL;
-        prahcal tem4 = NULL;    
-        pdeg2dms temb = NULL;
-        pdeg2dms teml = NULL;
+        xyz2blh tem1 = {0};
+        xyz2blh tem2 = {0};
+        blh2enu tem3 = {0};
+        rahcal  tem4 = {0};    
+        deg2dms temb = {0};
+        deg2dms teml = {0};
         blh = (pblh)malloc(sizeof(pblh) * o_epochnum* 256);
 		enu = (penu)malloc(sizeof(penu) * o_epochnum* 256);
 		rah = (prah)malloc(sizeof(prah) * o_epochnum* 256);
 		pos_t = (ppos_t)malloc(sizeof(ppos_t) * o_epochnum* 256);
 		station = (pstation)malloc(sizeof(pstation) * o_epochnum* 256);
-        tem1 = (pxyz2blh)malloc(sizeof(pxyz2blh)* 512);
-        tem2 = (pxyz2blh)malloc(sizeof(pxyz2blh)* 512);
-        tem3 = (pblh2enu)malloc(sizeof(pblh2enu)* 512);
-        temb = (pdeg2dms)malloc(sizeof(pdeg2dms)* 512);
-        teml = (pdeg2dms)malloc(sizeof(pdeg2dms)* 512);
         for (int i = 0; i < o_epochnum; i++)//第i个历元
         {
             result_file = fopen(".\\Pos_out\\LLA_result_for_read.txt", "a+");
@@ -123,14 +118,14 @@ int sat_gps_pos_clac(FILE * result_file,
 
                 /* ----------------------------- 地固坐标系转经纬大地高坐标系 ----------------------------- */ 
                 tem1 = XYZ2BLH( tem1, pos_t[i].X[sPRN], pos_t[i].Y[sPRN], pos_t[i].Z[sPRN]);
-                blh->B = rad2deg(tem1->B);
-                blh->L = rad2deg(tem1->L);
-                blh->H = tem1->H;
+                blh->B = rad2deg(tem1.B);
+                blh->L = rad2deg(tem1.L);
+                blh->H = tem1.H;
 
                 tem2 = XYZ2BLH( tem2, obs_h->apX, obs_h->apY, obs_h->apZ);
-                station->B = tem2->B;
-                station->L = tem2->L;
-                station->H = tem2->H;
+                station->B = tem2.B;
+                station->L = tem2.L;
+                station->H = tem2.H;
                 /* -------------------------------------------------------------------------- */
                 
                 /* ----------------------------- 经纬大地高坐标系转站心坐标系 ----------------------------- */
@@ -139,16 +134,16 @@ int sat_gps_pos_clac(FILE * result_file,
                 double deltaz = pos_t[i].Z[sPRN] - obs_h->apZ;
                  
                 tem3 = BLH2ENU(tem3, station->B, station->L, deltax, deltay, deltaz);
-                enu->E = tem3->E;
-                enu->N = tem3->N;
-                enu->U = tem3->U;
+                enu->E = tem3.E;
+                enu->N = tem3.N;
+                enu->U = tem3.U;
                 /* -------------------------------------------------------------------------- */
 
                 /* ---------------------------- 卫星方位角a，高度角h，向径r计算 --------------------------- */
                 tem4 = RAHCAL(tem4, enu->E, enu->N, enu->U);
-                rah->R = tem4->R;
-                rah->A = rad2deg(tem4->A);
-                rah->H = rad2deg(tem4->H);
+                rah->R = tem4.R;
+                rah->A = rad2deg(tem4.A);
+                rah->H = rad2deg(tem4.H);
                 /* -------------------------------------------------------------------------- */
                 if (blh->H < 0 || nav_b[best_epoch].sHEA != 0)
                 { 
@@ -157,14 +152,14 @@ int sat_gps_pos_clac(FILE * result_file,
                 else
                 {   
                     temb = DEG2DMS(temb, blh->B);
-                    blh->B_d = temb->D;
-                    blh->B_m = temb->M;
-                    blh->B_s = temb->S;
+                    blh->B_d = temb.D;
+                    blh->B_m = temb.M;
+                    blh->B_s = temb.S;
 
                     teml = DEG2DMS(teml, blh->L);
-                    blh->L_d = teml->D;
-                    blh->L_m = teml->M;
-                    blh->L_s = teml->S;
+                    blh->L_d = teml.D;
+                    blh->L_m = teml.M;
+                    blh->L_s = teml.S;
 
                     result_file = fopen(".\\Pos_out\\LLA_result_for_read.txt", "a+");
                     fprintf(result_file, "\nG%02d[sPRN] %4d° %02d′ %02d″ %4d° %02d′ %02d″ %15.05f",sPRN, blh->B_d, blh->B_m, blh->B_s, blh->L_d, blh->L_m, blh->L_s, blh->H);
diff --git a/deg2dms.h b/deg2dms.h
index 203ebb7..87a8f1c 100644
--- a/deg2dms.h
+++ b/deg2dms.h
@@ -9,7 +9,7 @@ typedef struct
     double D;
     double M;
     double S;    
-}deg2dms, *pdeg2dms;
+}deg2dms;
 
 /* -------------------------------------------------------------------------- */
 /// @brief 将十进制的度数转换为度分秒形式
@@ -17,16 +17,15 @@ typedef struct
 /// @param D 要转换度数
 /// @return 返回自定义结构体包含度，分，秒成员                      
 /* -------------------------------------------------------------------------- */
-pdeg2dms DEG2DMS(pdeg2dms deg2dms,
-                 double D)
+deg2dms DEG2DMS(deg2dms deg2dms,
+                double D)
 {
-    deg2dms = (pdeg2dms)malloc(sizeof(pdeg2dms));
     int sig = D / fabs(D);//符号判断
-    deg2dms->D = (int)(D);//转换为度分秒
-    deg2dms->M = (int)((D - deg2dms->D) * 60);//分秒去除符号格式
-    deg2dms->S = (int)(((D - deg2dms->D) * 60 - deg2dms->M) * 60);
-    deg2dms->M  = deg2dms->M * sig;
-    deg2dms->S  = deg2dms->S * sig;
+    deg2dms.D = (int)(D);//转换为度分秒
+    deg2dms.M = (int)((D - deg2dms.D) * 60);//分秒去除符号格式
+    deg2dms.S = (int)(((D - deg2dms.D) * 60 - deg2dms.M) * 60);
+    deg2dms.M  = deg2dms.M * sig;
+    deg2dms.S  = deg2dms.S * sig;
 
     return deg2dms;
 }
diff --git a/main.exe b/main.exe
index 0a5c0cd..4799307 100644
Binary files a/main.exe and b/main.exe differ
diff --git a/rahcal.h b/rahcal.h
index 7366ea0..806f8a3 100644
--- a/rahcal.h
+++ b/rahcal.h
@@ -11,7 +11,7 @@ typedef struct
     double R;
     double A;
     double H;
-}rahcal, *prahcal;
+}rahcal;
 
 /* -------------------------------------------------------------------------- */
 /// @brief 计算站心坐标系下的卫星高度方位角
@@ -21,17 +21,16 @@ typedef struct
 /// @param U 站心坐标天
 /// @return 返回自定义结构体变量包含R, A, H成员                        
 /* -------------------------------------------------------------------------- */
-prahcal RAHCAL(prahcal rahcal, 
-               double E, double N, double U)
+rahcal RAHCAL(rahcal rahcal, 
+              double E, double N, double U)
 {
-    rahcal = (prahcal)malloc(sizeof(prahcal));
-    rahcal->H = atan2(U, sqrt(E * E + N * N));
-    rahcal->A = atan2(E, U);
-    if (rahcal->A < 0)
-        rahcal->A += 2 * PI;
-    if (rahcal->A > 2 * PI)
-        rahcal->A -= 2 * PI;
-    rahcal->R = sqrt(E * E + N * N + U * U);
+    rahcal.H = atan2(U, sqrt(E * E + N * N));
+    rahcal.A = atan2(E, U);
+    if (rahcal.A < 0)
+        rahcal.A += 2 * PI;
+    if (rahcal.A > 2 * PI)
+        rahcal.A -= 2 * PI;
+    rahcal.R = sqrt(E * E + N * N + U * U);
 
     return rahcal;
 }
diff --git a/xyz2blh.h b/xyz2blh.h
index ee8e281..924f471 100644
--- a/xyz2blh.h
+++ b/xyz2blh.h
@@ -11,7 +11,7 @@ typedef struct
   double B;
   double L;
   double H;  
-}xyz2blh, *pxyz2blh;
+}xyz2blh;
 
 /* -------------------------------------------------------------------------- */
 /// @brief 将ECEF地心地固坐标转换为经纬高坐标
@@ -23,16 +23,15 @@ typedef struct
 /// @param e2 椭球的第一偏心率平方
 /// @return 返回自定义结构体类型包含B，L，H成员
 /* -------------------------------------------------------------------------- */
-pxyz2blh XYZ2BLH(pxyz2blh xyz2blh, 
+xyz2blh XYZ2BLH(xyz2blh xyz2blh, 
                   double X, double Y, double Z)
 
 {
-    xyz2blh = (pxyz2blh)malloc(sizeof(pxyz2blh));
     double B = 0.0, N = 0.0, H = 0.0, R0, R1, deltaH, deltaB;
     R0 = sqrt(pow(X, 2) + pow(Y, 2));
     R1 = sqrt(pow(X, 2) + pow(Y, 2) + pow(Z, 2));
     //经度直接求解
-    xyz2blh->L = atan2(Y, X);
+    xyz2blh.L = atan2(Y, X);
     //迭代求大地维度和大地高
     N = a;
     H = R1 - a;
@@ -45,8 +44,8 @@ pxyz2blh XYZ2BLH(pxyz2blh xyz2blh,
 		H = R0 / cos(B) - N;
 		B = atan2(Z * (N + H), R0 * (N * (1 - e2) + H));
 	} while (fabs(deltaH - H) > 1.0e-3 && fabs(deltaB - B) > 1.0e-9);
-	xyz2blh->B = B;
-	xyz2blh->H = H;
+	xyz2blh.B = B;
+	xyz2blh.H = H;
 
     return xyz2blh;
 }