GPS导航的源代码，vc源码，很实惠，希望下载

GPS-modem commands SIM508Z (en)_SIM508_GPS_COMMAND_V1.01

gps demo takes internal gps word and writes it to screen

基于单片机C语言的TCP/IP协议程序，有详细的说明和代码注释。-C language based on the single-chip TCP/IP protocol procedure is described in detail and code Notes.

calculate satellite positions, to correct pseudoranges and finally to calculate the receivers position。-calculate satellite positions, to correct pseudoranges and finally to calculate the receivers position.

利用C#编写的GPS伪距单点定位程序，可以根据星历数据和观测数据批量计算接收机坐标，内附测试数据和结果。

该程序是信号的多普勒现象，通过设置不同的参数，可得到不同的现象，具有一定的参考价值。-that the procedure was the Doppler signal, by setting different parameters, will be different, has some reference value.

非常实用的工具，可以用Matlab来进行射频上船用的转换以及分析。（例如可以将S矩阵转化成Z矩阵，放大器稳定性分析……）-Very useful tool, you can use Matlab to carry out on the marine radio frequency conversion, as well as analysis. (Such as the S matrix can be transformed into Z matrix, amplifier stability analysis ... ...)

GPS 演示程序,是教科书上的,个人认为比较有参考价值-GPS demo program is textbook, individuals considered to be more useful

大名顶顶的gpsd，很多开源软件都用的，与gps硬件进行通讯-顶顶name of gpsd, a lot of open source software are used with the gps hardware communications

实现了GPS,BDS(北斗)时间转换,包括通用时,儒略日,GPS时,北斗时,年积日之间的转换,界面采用vc6.0编写,简洁,可最小化至系统托盘,可方便地用于GPS算法调试,数据处理中的时间转换.