分析了该信号的时域、频域、倒谱，循环谱等,计算目标和海洋回波的功率谱密度,车牌识别定位程序的部分功能。- Analysis of the signal time domain, frequency domain, cepstrum, cyclic spectrum, etc. Calculating a target and ocean echo power spectral density, Part of the license plate recognition locator featu