摘要
针对随机脉位信号频谱中强信号旁瓣淹没弱信号的问题，提出了一种处理方法，即运用ＦＦＴ技术求出最大谱线，再运用自适应技术求出最大谱线的最大值，并从原信号中减去这个谱线，对得到的新信号再次重复运算，如此多次重复运算之后可得到整个频谱。该方法较之于经典的分析处理方法要好得多，文中还给出了２５６点、４个目标、最大目标信号比最小目标信号幅值大１００倍时的结果。在该条件下，用传统分析处理方法是无法得到正确结果的。
A new processing method for sidelobe nise spectral of strong randomly pulsed phase signal eating up little randomly pulsed phase signal is proposed in this paper.It is computing the biggest spec-tral line of the spectrum by FFT techniqne then computing the higgest value of the biggest spectral line by adaptive technioue ,and .subtracting it from the original signal,processing again.So many processing,will get all correct spectrum. This method of analysis and processing is much better than traditional ones.We give out processing resnlts of 256 points,four targets,the amplitude of biggest target signal being 100 times larger than that of smallcat target,signal in the paper.Under the same conditions,traditional methods of analysis and processing cannot give out correct results.
出处
《现代雷达》
CSCD
1995年第4期26-31,共6页
Modern Radar
关键词
随机脉冲信号
自适应谱估计
脉冲多普勒雷达
randomly pulsed phase signal,adaptive spectral estimation,sidelobne noise
