本文讨论了基于NTSC和PAL彩色全电视信号的二维沃尔什序谱分析的彩色解调器。指出在亮度信号和色度信号分离性能上,二维解调比一维解调好。二维解调有二维沃尔什变换和二维滤波二种方法。利用一维沃尔什函数和二维沃尔什函数的关系,可以用一维列率滤波器来实现NTSC及PAL信号的二维亮色序谱的分离。 This article discusses a color demodulator based on two-dimensional Walsh spectral analysis of NTSC and PAL color television signals. It is pointed out that the two-dimensional demodulation is better than one-dimensional demodulation in the separation of luminance signal and chrominance signal. Two-dimensional demodulation with two-dimensional Walsh transform and two-dimensional filtering two methods. Using the relationship between one-dimensional Walsh functions and two-dimensional Walsh functions, one-dimensional column rate filters can be used to separate two-dimensional bright color spectrum of NTSC and PAL signals.