Its-GPS-ranging-codes

gps定位程序 测试通过，可以直接拿来用 GPS卫星提供了P码（精码）和C/A码（粗码）两种定位服务。P码为军方服务，定位精度达到3米；C/A码对社会开放，定位精度为14米。出于自身安全的考虑，美国先后实施了SA和AS政策。SA政策在C/A码中人为引入了误差，使定位精度下降到100米；AS政策则对P码实行加密。 由于GPS对社会开放，因此各类接收机、测量设备如雨后春笋般涌现，并广泛应用于各行各业，彻底改变了传统的定位导航方式.(gps positioning program testing by direct use of them GPS satellites provide two kinds of location-based services in the P-code (precise code) and the C/A code (coarse code). P code for military service, positioning accuracy of 3 meters C/A code of the open society, positioning accuracy of 14 meters. For their own security reasons, the United States has implemented a policy of SA and AS. SA policy is artificially introduced in the C/A code of the error, so that the positioning accuracy down to 100 meters AS policy is implemented in P-code encryption. GPS open society, the various types of receivers, measuring equipment have sprung up, and are widely used in all walks of life, completely changed the traditional positioning and navigation.)

将世界通用时转化成儒略日,进而可转化简化儒略日。(Convert the Universal Time into Julian Day)

GPS信号的跟踪与捕获，matlab代码有详细注释！！！！！(GPS signal tracking and capture, matlab code have detailed!!!!!!!!!!!!!!!!!!!!!!!!! Comments)

GPS/SINS松组合/紧组合MATLAB仿真验证代码(GPS/SINS loose /tight integration MATLAB simulation verification code)

HARQ技术研究，以喷泉码为研究对象，结合LDPC纠错码而研究的。(HARQ technology research to fountain codes for the study, and research combined with LDPC error correction code.)

在STM32F407上实现GPS模块功能(Implementing GPS functionality on STM32F407)

GPS应用研究中的C源程序集，包括一些GPS理论，以及星历预报软件，卫星天空试图，坐标转化等程序的PDF电子书()

GPS软件接收机以及fft程序实现 可以实现，包括基本文档(The software GPS receiver and FFT program)

北斗一代模块测试软件，可以测试北斗一代的通信，短报文，定位等功能(test RDSS software,can test the location,communication and some other functions.)

基于空间平滑的MUSIC算法的MATLAB仿真程序(The MATLAB program of 5. space smooth MUSIC algorithm)