旋转式合成孔径雷达干涉成像方法

doi:10.3969/j.issn.1001-2400.2014.04.001

Abstract

Abstract:

To achieve the perception of 3D imaging in the complex environment in low-altitude space, an interferometric imaging model of rotor synthetic aperture radar (ROSAR) is established. The rotary axes of the platforms in different altitudes are shifted. By moving the rotary shaft and the observed scene holistically, the effects of the rotary shaft offset are equivalent to the changes of the scene position. Meanwhile, by analyzing the effects of the scene movement on the azimuth bandwidth and interferometric phase, we obtain the relation between slant range difference and offset amount. And then construct a compensation function to correct the additional phase. Simulation results demonstrate that this method can not only remove the effects of rotary shift offset effectively but also measure the height of the scene accurately.

Key words: rotor synthetic aperture radar(ROSAR), interferometric imaging, rotary axis offset, compensation function

YANG Ke;LIAO Guisheng;XU Qing. Research on interferometric imaging for rotor synthetic aperture radar[J].J4, 2014, 41(4): 1-5+30.

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Research on interferometric imaging for rotor synthetic aperture radar

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