多個(gè)斯威林4型目標(biāo)輸出信號(hào)近似服從高斯分布研究
Study on the Approximate Gaussian Distribution of the Outputs for Multiple Swerling 4 Targets
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摘要: 為了將對(duì)瑞利目標(biāo)的檢測(cè)與分辨方法應(yīng)用于多個(gè)斯威林4型目標(biāo)的檢測(cè)與分辨，該文主要研究了多個(gè)斯威林4型目標(biāo)存在時(shí)輸出信號(hào)近似為高斯分布的條件。首先推導(dǎo)了多個(gè)斯威林4型目標(biāo)存在時(shí)雷達(dá)接收機(jī)輸出信號(hào)的概率分布；在此基礎(chǔ)上，通過(guò)仿真獲得了輸出信號(hào)近似為高斯分布的條件，即多個(gè)目標(biāo)中回波功率最大的兩個(gè)目標(biāo)的信噪比相差不大于7dB。
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關(guān)鍵詞:
- 目標(biāo)檢測(cè)與分辨; 斯威林4型目標(biāo); 高斯分布
Abstract: The condition under which the output signals of monopulse radar receiver with two Swerling 4 targets are approximate to the Gaussian distribution has been studied in order to apply the detection and estimation methods of Rayleigh targets to Sweriling 4 targets. First, the probability density function(pdf) of the outputs under multiple Swerling targets are derived; then get the condition, under which the pdf of the outputs is approximate to Gaussian distribution, that the difference between the SNRs of two targets , whose returns power are the biggest among the targets, is not more than 7 dB. -
何友，關(guān)鍵等著. 雷達(dá)自動(dòng)檢測(cè)及恒虛警處理. 北京：清華大學(xué)出版社，1999：4-5.[2]Blair W D, Brandt-Pearce M. Unresolved Rayleigh target detection using monopulse measurements[J].IEEE Trans. on Aerospace and Electronic Systems.1998,34(2 ):543-551[3]Blair W D, Brandt-Pearce M. Monopulse DOA estimation of two unresolved Rayleigh targets[J].IEEE Trans. on Aerospace and Electronic Systems.2001,37(2):452-469[4]Sinha A, Kirubarajan T, Bar-Shalom Y. Maximum likelihood angle extractor for two closely spaced targets[J].IEEE Trans. on Aerospace and Electronic Systems.2002,38(1):183-201[5]Zhang Xin，Willett P, Bar-Shalom Y. Monopulse radar detection and localization of multiple targets via joint multiple-bin processing.Proceedings of the 2003 IEEE Radar Conference，Huntsville Alabama，2003：232-237.[6]中山大學(xué)數(shù)學(xué)力學(xué)系《概率論及數(shù)理統(tǒng)計(jì)》編寫小組編. 概率論及數(shù)理統(tǒng)計(jì)(上冊(cè)). 北京：人民教育出版社，1980：237-270. -
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