用MATLAB程序实现卫星位置解算、用户位置解算（最小二乘法）、导航电文读取、坐标转换。-MATLAB program to achieve the satellite position solver, solver user location, navigation message reads, GPS positioning simulation (implemented by the least squares method).

基于卡尔曼滤波的GNSS卫星导航PVT解算例程，实测可用。输入参数为至少四颗卫星的XYZ坐标和伪距，输出结果为接收机经纬度值。-GNSS satellite navigation PVT Calman filter solution based routines, can be measured. The input parameters for the XYZ coordinates of at least four satellites and pseudo distance, the ou

GPS卫星定位解算的源程序，matlab代码，可以解算出坐标位置 -GPS satellite positioning solver

读取RENIX文件（GPS导航电文），进行卫星轨道坐标解算，并将结果生成TXT文件输出。(The program can read standard RENIX file(Satellite navigation message file of GPS). and calculate the cordinate of Satellite (X,Y,Z). it will give an TXT format result.)