基于IPPS的微弱信號檢測
A Novel Detection Algorithm of Dim Signal Based on IPPS
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摘要: 該文針對窄帶極化雷達(dá)系統(tǒng)，研究了微弱信號的檢測問題。首先給出了目標(biāo)散射信號和隨機(jī)極化波的瞬態(tài)極化投影序列(IPPS)表征方法，導(dǎo)出了隨機(jī)極化波的IPPS到期望點(diǎn)廣義距離的統(tǒng)計特性。在此基礎(chǔ)上，利用信號和噪聲的IPPS到期望點(diǎn)廣義距離之間的差異，基于極化積累的思想，提出了一種基于IPPS的微弱信號檢測算法，仿真結(jié)果表明該文算法可以實(shí)現(xiàn)10dB以上的性能改善。
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關(guān)鍵詞:
- 雷達(dá);微弱信號檢測;瞬態(tài)極化
Abstract: The detection problem of dim signal is studied based on mono-frequency or narrowband dual-polarization radar system in this paper. Firstly, the descriptions of Instantaneous Polarization Projection Sequences (IPPS) of signal and noise are presented and statistics of generalized distance between random EM wave and the anticipant signa are derived. Then, utilizing the generalized distance difference of signal and noise to the anticipant signal, a novel detection algorithm is presented through polarization accumulation. In this paper, detect performance of radar system is improved obviously and more than 10dB. -
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