With the development of computer,it becomes possible to demodulate signal with software,which enormously broadens the approaches of signal receiving and processing.

• 由于计算机技术的飞速发展,通过软件的方法实现对信号解调已成为可能,大大拓宽了信号接收和处理的途径,为信号事后处理提供了有效的手段。