数字信号解调（接收端），包括：“删除干扰噪声信号”，“从载波信号中提取原始信号”，“滤波器滤波”，“用PSK解码，把图形变成数字信号”。-Digital signal demodulator (receiver), including: " to remove interference noise signal,"　" carrier signal extracted from the original signal,"　" filter" , " with PSK decoding, graphics put into a digital signal."