随着空间技术的研究与发展，对空间目标的监测与识别显得越来越重要。在小波变换的基础上，详细讨论了小波功率谱估计的实现方法，并利用窄带雷达测量获得的空间目标RCS数据，利用Morlet小波对几个空间目标的RCS时间序列进行功率谱分析。并把傅里叶变换同小波变换进行结合，以实现对目标RCS的信号功率谱估计。分析结果反映了目标的某些重要的散射特性。

With the development of space technology,monitoring and identification to space target are becoming more and more important.A realization of power spectrum estimation of signal is on the basis of wavelet transform given.With the help of RCS data acquired from a narrow band radar measurement,this method is applied to some of the RCS time series,and it combines Fourier transform with wavelet transform,so as to realize power spectrum estimation of object RCS signal.The results of analysis show some significant scattering features of the space target

TN959.1