以散射質(zhì)心為基準(zhǔn)的ISAR成象的運(yùn)動(dòng)補(bǔ)償
THE MOTION COMPENSATION FOR ISAR IMAGING USING SCATTERING CENTROID
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摘要: 本文提出和研究了以散射功率質(zhì)心為基準(zhǔn)的逆合成孔徑雷達(dá)(ISAR)成象的運(yùn)動(dòng)補(bǔ)償方法參考質(zhì)心法。分析了參考質(zhì)心法與相關(guān)法的內(nèi)在聯(lián)系和區(qū)別;討論了噪聲對(duì)補(bǔ)償?shù)挠绊?提出了用回波數(shù)據(jù)擬合曲線來光滑質(zhì)心距離軌跡和相位軌跡的方法。最后通過對(duì)ISAR外場(chǎng)數(shù)據(jù)和微波暗室數(shù)據(jù)成象的運(yùn)動(dòng)補(bǔ)償驗(yàn)證了上述理論和方法,得到了滿意的效果。
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關(guān)鍵詞:
- 雷達(dá)成象; 逆合成孔徑雷達(dá); 運(yùn)動(dòng)補(bǔ)償
Abstract: The motion compensation for ISAR imaging using scattering centroid (called reference centroid method) is proposed and studied. The internal relations and differences between correlation method and the new method are analyzed. The noise effect on the motion compensation is discussed. To solve the problem, a new method which uses echo goodness-of-fit curve to smooth the centroid range trace and phase trace is proposed. The reference centroid method is used to process the simulative and real ISAR data of movi... -
B. D. Steinberg, Proc. IEEE, 76(1988)12, 1578-1592.[2]C.C.Chen, H.C. Andrews, IEEE Trans. on AES, AES-16(1980)1, 2-14.[3]D.R. Wehner, High Resolution Radar, Artech House, (1987), Chapter 7.[4]陳學(xué)紅,陳宗騭,運(yùn)動(dòng)目標(biāo)逆合成孔徑雷達(dá)成象,電子科學(xué)學(xué)刊,11(1989)6,584-589. -
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