一种机载合成孔径雷达自主定位算法

doi:10.7527/S1000-6893.2014.0041

Abstract

Abstract:

Aimed at the application of airborne synthetic aperture radar (SAR), airborne SAR autonomous location technology is studied in this paper. A new location algorithm by imaging the area of the target repeatedly is proposed. This algorithm will not be influenced by the velocity error and angle error of the platform and it only uses the carrier aircraft instantaneous position and the distance between the radar and the target, which can significantly improve the location precision of airborne SAR. A location algorithm based on the least square method is analytically derived when carrier craft flights staring at target, which can further improve the location precision. Finally, the new presented method is compared with SAR location techniques based on the traditional R-D model. Real data processing results demonstrate that the new algorithm proposed in the paper can improve the location precision significantly.

Key words: airborne, synthetic aperture radar, autonomous location, location precision, least square

CLC Number:

SONG Wei, ZHU Daiyin, YE Shaohua, LI Yong. A Autonomous Location Algorithm of Airborne Synthetic Aperture Radar[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2014, 35(8): 2279-2285.

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A Autonomous Location Algorithm of Airborne Synthetic Aperture Radar

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