对HARQ系统的吞吐量分析，有PMUSIC 校正前和校正后的比较，对于初学者具有参考意义，对信号进行频谱分析及滤波，GPS和INS组合导航程序，部分实现了追踪测速迭代松弛算法。- HARQ throughput analysis of the system, A relatively before correction and after correction PMUSIC, For beginners with a reference value, The signal spectral analysis and filtering, GPS and INS navigation program, Partially achieved tracking speed iterative relaxation algorithm.