说明：  扩频序列为1023的直扩信号BPSK调制产生信号的代码。data为bpsk调制m序列信号。mesrial是原始的m序列。dm为随机信息码。
(Spreading sequence for the 1023 DS signal BPSK modulation signal generated code. data for the bpsk modulation m-sequence signal. mesrial is the original m-sequence. dm is the random information code.)