Weibull杂波经正交对消处理后DFT谱线的统计分布

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Weibull杂波经正交对消处理后DFT谱线的统计分布

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- Weibull杂波经正交对消处理后DFT谱线的统计分布
- DFT Spectrum Statistical Distribution of Weibull Clutter Processed by a Quadrature Two-Channel System
- 电子学报 1983年第2期页码：52-57
- 作者机构：
  
  四川大学
- 作者简介：
- 基金信息：
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- 纸质出版：1983
- 稿件说明：
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[1]卢定庆.Weibull杂波经正交对消处理后DFT谱线的统计分布[J].电子学报,1983(02):52-57.

Lu Ding-qing. DFT Spectrum Statistical Distribution of Weibull Clutter Processed by a Quadrature Two-Channel System[J]. Acta Electronica Sinica, 1983, (2): 52-57.
[1]卢定庆.Weibull杂波经正交对消处理后DFT谱线的统计分布[J].电子学报,1983(02):52-57. DOI：

Lu Ding-qing. DFT Spectrum Statistical Distribution of Weibull Clutter Processed by a Quadrature Two-Channel System[J]. Acta Electronica Sinica, 1983, (2): 52-57. DOI：

摘要

文献[1

2]研究了独立的Rayleigh分布和均匀分布随机变量经DFT后频谱的统计分布。本文探讨了经对消处理后杂波频谱的统计分布。随着对雷达精度要求的提高

人们日益重视对非Rayleigh杂波的研究;Weibull杂波就是其中的一类

它能在较广的范围内精确地描述实际杂波的幅度分布。适当改变Weibull分布的形状参数p

可使之逼近于Rayleigh分布（当p=2的Weibull分布）或对数-正态分布。本文用Monte Carlo法研究了Weibull杂波经DFT后谱线统计分布的求解。

Abstract

This paper investigates the statistical distribution law for the DFT spectrum of the clutter processed by a quadrature two-channel system with the canceller. In the case of Rayleigh clutter

the spectrum probability distribution is derived by means of the characteristic function method. In the deriving process

it is discovered that spectrum lines are different not only in variance but also in the form of distribution under the given parameters N

p and q. These results are proved by Monte Carlo Simulation. The analysis of the data from simulation reveals the statistical law of amplitude for the spectrum in which the real part or imaginary part does not converge to normal distribution.

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