基于時(shí)域雙譜估計(jì)的超寬帶雷達(dá)目標(biāo)特性分析
ANALYSIS OF UWB RADAR TARGET CHARACTERISTIC BASED ON TIME-DOMAIN BISPECTRUM ESTIMATION
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摘要: 本文利用UWB雷達(dá)目標(biāo)沖擊響應(yīng)局部分量,針對(duì)復(fù)雜目標(biāo),提出了一種時(shí)域雙譜估計(jì)算法,能準(zhǔn)確地估計(jì)出目標(biāo)的散射中心分布。根據(jù)上述算法利用自行研制的沖激雷達(dá)實(shí)驗(yàn)系統(tǒng)對(duì)縮比飛機(jī)模型的實(shí)測(cè)數(shù)據(jù)作了分析,結(jié)果表明了算法的有效性。
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關(guān)鍵詞:
- UWB雷達(dá); 散射中心; 目標(biāo)建模; 雙譜估計(jì)
Abstract: In this paper, using the component of the impulse response of target, a time-domain bispectrum estimating algorithm based on complex target is presented, this algorithm can estimate the scattering centers of target. The experimtental data of the compression airplane model according to proportion was analyzed in term of the above algorithm, using the impulse radar experimental system which is developed by the Team of Anti-Stealth Impulse Radar, Department of Electrical Engineering, National University of Defense Technology. The validity of the algorithm was shown by the experimental results. -
Ismain I Jouny, Walton Eric K. Target identification using bispectral analysis of ultra-wideband radar data. Ultra-wideband radar: Proceedings of the First Los Alamos Symposium, ED. by Bruce Noel, 1991, 405-416.[2]Nikias C L, Ranghuveer M R. Bispectrum estimation: A digital signal processing framework[J].Proc. IEEE.1987, 75(7):869-891[3]Marimarelis V Z, Sheby D. Evaluation of ultra-wideband echo data using bispectral processing techniques. SPIE92, Ultrawideband radar, 1992, 1631: 71-84.[4]Walton E K, Jouny 11. Bispectrum of radar signatures and application to target classification. Radio Science, 1989, 1990, 25(2): 101-113.[5]Hao T S, Gaber M M. An Introduction to Bispectrum Analysys and Bilinear Time Series Modes. New York: Springer-verlag, 1984, 253.[6]匡綱要.UWB雷達(dá)目標(biāo)建模和信號(hào)設(shè)計(jì):[博士論文].長(zhǎng)沙:國(guó)防科技大學(xué),1995. -
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