一种曲线轨迹下的弹载前斜视成像算法

doi:10.3969/j.issn.1001-2400.2011.01.020

Abstract

Abstract:

For the problem of the forward-looking blind zone on the missile-borne SAR, this paper presents a squint RD imaging algorithm in a missile trajectory. This algorithm requires a curve locus to receive target imaging, which causes the radar antenna to be directed to the target at a squint degree that changes the forward-looking into a squint mode. Considering the handicap by the complex trajectory equation under the curve locus, we first obtain the trajectory equation in high order, and takes RCMC(Range Cell Migration Correction) in the time-doppler domain, then derive the two-dimensional frequency domain expression by series reversion and finally receive the imaging results by a two-dimensional matched filter. Simulation results verifies its validity.

Key words: missile-borne, squint, series reversion, SAR(synthetic aperture radar), range-Doppler(RD), curve locus

LIU Gaogao;ZHANG Linrang;YI Yusheng;LIU Nan;LIU Xin;WANG Chun. Missile-borne squint SAR algorithm based on a curve locus[J].J4, 2011, 38(1): 123-130.

References

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Missile-borne squint SAR algorithm based on a curve locus

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