飞控 GPS 无人机飞控

某国外大牛开源的软件GPS接收机源代码，可以用MATLAB进行仿真，相应的GPS中频数据可以在网上下载到，配套书籍是《软件GPS接收机》，大家可以自行百度PDF下载

OpenSource GPS is software for x86 PCs that allows you to acquire, track and demodulate signals from GPS satellites. OSGPS requires a Zarlink GP2021 12 channel GPS correlator chip

GPS时间转换程序，采用C#Windows编写，有良好的界面布局，输入年月日可以准确地转换成GPS周、周内日以及年积日，对从事GPS研发人员很有帮助。

快速傅立叶变换方法实现快速卷积，比较好用-fast Fourier transform method to achieve rapid convolution, better quality

linux下获取uart设备，文件，实时读取gps模块信息，转成可识别的位置信息。

android gps jni源码函数调用了hw_get_module加载硬件适配模块.so文件，接着通过hw_device_t接口调用open()函数，实际执行了gps/loc_api/libloc_api/gps.c定义的open_gps函数，然后调用gps_device_t接口的get_gps_interface函数，此函数也是在gps.c中定义的，最后返回HAL层中loc_eng.cpp文件的sLocEngInterface，从而打通了上层到底层的通道。

GPRS蓝斯DTU数据中心VB源代码，用于服务器-GPRS Lance DTU Data Center VB source code for the server

测试gps接受设备正确性代码.运行exe文件后,可以查看到通讯设备是否正常-gps acceptance testing equipment correctness code. Run exe file, they can check whether the communications equipment to normal

Win98,Winme,Winnt,Winxp,Win2003 VC+mapX开发GPS车辆监控的源码-Win98, Winme, WINNT, Winxp, Win2003 VC mapX development of the GPS vehicle monitoring FOSS

The idea behind differential GPS is to remove as much errors as possible from the range measurements by establishing these errors at a reference site. In its most simple setup, a GPS receiver is located at a well surveyed position and its (pseudo) range measurements are compared with the actual calculated range from this receiver to the SV s. The differences between measured ranges and calculated ranges at the reference receiver are applied as corrections to the ranges measured by other receiver(s) close by.