超寬帶雷達(dá)信號(hào)處理技術(shù)和實(shí)驗(yàn)研究
ULTRA-WIDEBAND RADAR SIGNAL PROCESSING AND EXPERIMENT
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摘要: 針對(duì)探測(cè)空中目標(biāo)的超寬帶(UWB)/沖激雷達(dá),本文討論了UWB/沖激雷達(dá)的信號(hào)處理技術(shù),主要是信號(hào)檢測(cè)和目標(biāo)特性分析,首先討論了目標(biāo)檢測(cè)技術(shù),提出了用小波變換和高階譜估計(jì)技術(shù)在變換域內(nèi)進(jìn)行檢測(cè)的算法;其次討論了目標(biāo)特性分析技術(shù),采用了高階譜估計(jì),提出了一種時(shí)域雙譜估計(jì)算法,它可精確估計(jì)復(fù)雜形體目標(biāo)的局部散射中心的分布.最后,結(jié)合作者等人研制的沖激雷達(dá)實(shí)驗(yàn)系統(tǒng),對(duì)上述信號(hào)處理方法進(jìn)行了實(shí)驗(yàn)研究,驗(yàn)證了上述信號(hào)處理方法的有效性。
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關(guān)鍵詞:
- UWB雷達(dá); 信號(hào)檢測(cè); 目標(biāo)特性
Abstract: With reference to the air target detected by ultra-wideband(UWB)/impulse radar,this paper discussed transient signal processing techniques.In weak UWB signal detection,wavelet transforms and high order spectrum estimation were preferred.In target characteristics analysis,a time domain bispectrum estimation algorithm was presented,which could estimate accurately local scattering distribution of complex target.A free field experimental impulse radar system was introduced in this paper.With this system,the response of several canonical target models and scale aircraft were measured and processed. -
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