中文说明： 包括四元数的各种计算,搭建OFDM通信系统的框架，部分实现了追踪测速迭代松弛算法，有均匀线阵的CRB曲线，自己编的5种调制信号，脉冲响应的相关分析算法并检验。
English Description：
It includes the calculation of quaternion, the frame of OFDM communication system, the iterative relaxation algorithm of tracking and velocity measurement, the CRB curve of uniform linear array, five kinds of modulation signals, and the correlation analysis algorithm of impulse response.