WVD用于SAR運(yùn)動(dòng)目標(biāo)檢測(cè)和成象的參數(shù)估計(jì)
A PARAMETER ESTIMATION FOR DETECTION AND IMAGING OF MOVING TARGETS WITH SAR BY WVD
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摘要: 本文基于聯(lián)合時(shí)間頻率二維分布的研究方法,探討了WVD(Wigner-Ville Distribution)變換用于合成孔徑雷達(dá)運(yùn)動(dòng)目標(biāo)檢測(cè)和成象的可行性,給出了能得到運(yùn)動(dòng)目標(biāo)精細(xì)成象的參數(shù)估計(jì)方法,并對(duì)多點(diǎn)目標(biāo)和面目標(biāo)情況下WVD存在的問(wèn)題進(jìn)行了研究。計(jì)算機(jī)模擬驗(yàn)證了算法的有效性。Abstract: Based on a joint time-frequency two dimensional processing, this paper proposes a method for the detection and imaging of moving targets with SAR by using Wigner-Ville Distribution (WVD). It is a parameter estimation method to generate a high resolution image. The problems of WVD in dealing with multipoint targets and extent targets are also discussed. The computer simulation results illustrate its availability.
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Raney R K. Synthetic aperture radar and moving targets. IEEE Trans. on AES, 1971，AES, 7(3): 499-500.[2]Kay S, Boudrexux-Bartels G F. On the Optimality of the Wigner Distribution for Detection. ICASSP85, March 1985.[3]Barbarossa S. Detection aml imaging o1 moving objects with synthetic aperture radar. IEE Proc: F, 1992, 139(1):89-97. -
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