GPSL2频点半无码跟踪最经典必读的一篇文章。-GPS L2 semi-codeless tracking algorithms.

GPS L2C频段的信号仿真和捕获，包括L2C cm(短码)和cl（长码）的产生及融合，以及最后的捕获获取初始频偏和码相位-GPS L2C signal simulation and capture band, including L2C cm (short code) and cl (long code) generation and integration, and finally get the initial capture and code phase offset

由GPS观测值求解多路径误差。（需要双频载波和伪距观测值）-Calculate the multipath GPS observation L1, L2, C1, P2. The observation file should be RENIX .o file

GNSS软件接收机代码，在GNURadio的基础上写了信号处理以及流图（用C++），支持SIMD以及GPU加速，关键计算都使用自己写的专用库实现，在硬件上支持GN3S V2、RTLSDR、osmosdr等诸多设备，支持GPS L1C/A、L2，Galileo E1、E5a。(GNSS software receiver code, on the basis of GNURadio, wrote signal processing and flow chart (using C++), suppo