【摘要】 信号处理被广泛地应用于雷达、声纳、仪表等众多领域,在这些领域里信处主要完成信号的频谱分析。在某些场合,需要较高的频谱分辨率,这就需要较多的点数和惊人的运算量,但实际运用中我们所关心的往往是信号频谱的局部特性,并不需要它的整个频谱特性,ZFFT就是针对频谱的局部特性进行分析的一种方法。采用ZFFT方法可大大降低运算量。更多还原

【Abstract】 Signal processing has found wide applications in radar, sonar and instruments, in which its major use is to make spcetrum analysis. In some cases when higher spctral resolution and therefore more points and tremendous calculation are needed, what is actually concerned lies in characteristics of part spectrum rather than in analysis of the whole spcetrum. This paper introduces ZFFT, a method used for analysis of part spctrum. ZFFT is proven to reduce considerably calculation.更多还原