基于复调制的Zoom—FFT方法是一种行之 有效的方法。本文采用组合算法，即小样本Zoom．FFT算法结合频率校正算 法，用Matlab实现了该算法，并通过仿真验证，证明了该算法的优越性。

The Zoom-FFT is a process where an input signal is mixed down to baseband and then decimated, prior to passing it into a standard FFT. The advantage is for example that if you have a sample rate of 10 MHz and require at least 10Hz resolution over a s

复调制ZoomFFT是频谱细化技术的其中一种，从分析精度、计算效率、分辨率、灵活性等方面来看，是最有效的一种。-A common method of complex modulation ZoomFFT method, Chirp-Z transform, Yip-ZOOM transform based on, but the analysis accuracy, computational efficiency, resolution, spirit Active perspective,