一种适用于机载双站SAR成像的运动补偿方法

doi:10.3969/j.issn.1001-2400.2013.03.010

J4 ›› 2013, Vol. 40 ›› Issue (3): 66-72+138.doi: 10.3969/j.issn.1001-2400.2013.03.010

一种适用于机载双站SAR成像的运动补偿方法

周松;杨磊;李亚超;邢孟道;保铮

(西安电子科技大学雷达信号处理国家重点实验室，陕西西安 710071)

收稿日期:2012-01-08 出版日期:2013-06-20 发布日期:2013-07-29
通讯作者: 周松
作者简介:周松(1984-)，男，西安电子科技大学博士研究生，E-mail: zhousong8411@sina.com．
基金资助:
国家自然科学基金资助项目(61201284,61001211);航空基金资助项目(20110181004)

Motion compensation approach for airborne bistatic SAR imaging

ZHOU Song;YANG Lei;LI Yachao;XING Mengdao;BAO Zheng

(National Key Lab. of Radar Signal Processing, Xidian Univ., Xi'an 710071， China)

Received:2012-01-08 Online:2013-06-20 Published:2013-07-29
Contact: ZHOU Song

摘要/Abstract

摘要：

在机载双站合成孔径雷达成像中，载机的运动误差和双站几何构型信息的不准确均会引入额外的相位误差，该相位误差将导致双站合成孔径雷达图像的聚焦质量显著下降．针对一站固定构型的机载双站合成孔径雷达成像，重点分析了几何构型偏差对成像的影响，提出了一种适用的运动补偿方法．该方法利用多普勒调频率估计，同时补偿由运动误差和几何构型偏差所引入的相位误差，从而较为有效地改善了双站合成孔径雷达图像的聚焦质量．

关键词: 双站合成孔径雷达(BiSAR), 一站固定构型, 几何构型偏差, 运动补偿

Abstract:

In airborne bistatic synthetic aperture radar (BiSAR) imaging, not only the motion error of the airborne platform, but also the inaccuracy of data acquisition geometry will introduce an additional phase error that seriously degrades the focusing quality of the final image. For one-stationary BiSAR imaging, the influence of the inaccurate geometry is analyzed in detail and an applicable motion compensation approach is proposed. By using Doppler rates estimation, the phase error both from the motion error and the inaccurate geometry is appropriately compensated so that the focusing quality of the final image is consequently improved. Analyses of acquired raw data are presented to verify the proposal.

Key words: bistatic synthetic aperture radar (BiSAR), one-stationary configuration, inaccuracy of data acquisition geometry, motion compensation

周松;杨磊;李亚超;邢孟道;保铮. 一种适用于机载双站SAR成像的运动补偿方法[J]. J4, 2013, 40(3): 66-72+138.

ZHOU Song;YANG Lei;LI Yachao;XING Mengdao;BAO Zheng. Motion compensation approach for airborne bistatic SAR imaging[J]. J4, 2013, 40(3): 66-72+138.

参考文献

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一种适用于机载双站SAR成像的运动补偿方法

Motion compensation approach for airborne bistatic SAR imaging

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