一种双站合成孔径雷达的高分辨率成像与合成方法

上海交通大学学报（自然版） ›› 2014, Vol. 48 ›› Issue (03): 317-322.

• 无线电电子学、电信技术 • 下一篇

一种双站合成孔径雷达的高分辨率成像与合成方法

（1.杭州电子科技大学通信学院，杭州 310018；2.浙江大学航空航天学院，杭州 310027）

收稿日期:2013-04-14 出版日期:2014-03-28 发布日期:2014-03-28
基金资助:
国家自然科学基金（61301248），中国航空科学基金（20120576001），中国博士后科学基金面上项目（2011M501000）

Imaging and Auto-Combination Processing Technique for Bistatic Synthetic Aperture Radar

ZHONG Hua1,SONG Guanghua2,DU Changping2

(1. School of Communication Engineering, Hangzhou Dianzi University, Hangzhou 310018, China; 2. School of Aeronautics and Astronautics, Zhejiang University, Hangzhou, 310028, China)

Received:2013-04-14 Online:2014-03-28 Published:2014-03-28

摘要/Abstract

摘要：

针对合成孔径雷达难以提高系统固有分辨率，分析了双站合成孔径雷达之间的频谱关系，提出了一种距离向分辨率自动合成方法.基于该方法，双站合成孔径雷达高分辨率成像处理流程可以分为2步：首先，采用改进的双站非线性ChirpScaling算法得到高质量的子图像对；然后，利用子图像对之间存在的频谱偏移关系，利用分辨率自动合成算法将子图像对合成为分辨率更高的图像，从而完成双站合成孔径雷达的高分辨率成像处理.仿真结果表明，该处理技术及成像方法可以得到较好的高分辨率成像效果.

关键词: 双站合成孔径雷达, 距离向分辨率, 自动合成

Abstract:

To improve the inherent resolution of synthetic aperture radar (SAR), the relationship between the spetrums of bistatic SAR (BiSAR) was analyzed and a novel range resolution auto-combination method was proposed in this paper. Based on the proposed method, the whole procedure was divided into two steps: First, the raw echo of BiSAR was well focused by an modified nonlinear chirp scaling algorithm, where no interpolation was required. Secondly, an auto-combination technique based on image quality was introduced to combine sub-images into an improved resolution image. Simulation results show that this technique is effective and robust.

Key words: bistatic synthetic aperture radar, range resolution, auto-combination

中图分类号:

TN 958.04

钟华1，宋广华2，杜昌平2. 一种双站合成孔径雷达的高分辨率成像与合成方法[J]. 上海交通大学学报（自然版）, 2014, 48(03): 317-322.

ZHONG Hua1,SONG Guanghua2,DU Changping2. Imaging and Auto-Combination Processing Technique for Bistatic Synthetic Aperture Radar[J]. Journal of Shanghai Jiaotong University, 2014, 48(03): 317-322.

参考文献

［1］Walterscheid I, Ender J H G, Brenner A R, et al. Bistatic SAR processing and experiments ［J］. IEEE Transactions on Geoscience and Remote Sensing, 2006, 44(10): 27102717.

［2］Wang R, Loffeld O, Nies H, et al. Chirpscaling algorithm for bistatic SAR data in the constantoffset configuration ［J］. IEEE Transactions on Geoscience and Remote Sensing, 2009, 47(3): 952964.

［3］仇晓兰, 丁赤飚, 胡东辉. 双站SAR成像处理技术［M］. 北京: 科学出版社, 2010.

［4］Wang R, Loffeld O, Nies H, et al. Bistatic point target reference spectrum in the presence of trajectory deviations ［J］. IET Radar Sonar and Navigation, 2009, 3(2): 177185.

［5］Yew L, Wong F, Cumming I G. A twodimensional spectrum for bistatic SAR processing using series reversion ［J］. IEEE Geoscience and Remote Sensing Letters, 2007, 4(1): 9396.

［6］Zhang Z H, Xing M D, Ding J S, et al. Focusing parallel bistatic SAR data using the analytic transfer function in the wavenumber domain ［J］. IEEE Transactions on Geoscience and Remote Sensing, 2007, 45(11): 36333645.

［7］Giroux V, Cantalloube H, Daout F. Frequency domain algorithm for bistatic SAR ［C］∥2006 European Conference on Synthetic Aperture Radar. Dresden, Germany: ［s.n.］, 2006.

［8］Walterscheid I, Ender J H G, Brenner A R, et al. Bistatic SAR processing and experiments ［J］. IEEE Transactions on Geoscience and Remote Sensing, 2006, 44(10): 27102717.

［9］Qiu X L, Hu D H, Ding C B. An omegaK algorithm with phase error compensation for bistatic SAR of a translational invariant case ［J］. IEEE Transactions on Geoscience and Remote Sensing, 2008, 46(8): 22242232.

［10］Bamler R, Meyer F, Liebhart W. Processing of bistatic SAR data from quasistationary configurations ［J］. IEEE Transactions on Geoscience and Remote Sensing, 2007, 45(11): 33503358.

［11］Prati C, Rocca F. Improving slantrange resolution with multiple SAR surveys ［J］. IEEE Transactions on Aerospace and Electronics System, 1993, 29(1): 135143.

［12］Xu H P, Zhou Y Q, Li C S. An algorithm based on spectrum shift estimation for improving range resolution using distributed spaceborne interferometric SAR ［J］. Journal of Electronics, China, 2003, 31(12): 17901794.

［13］Wang F, Li X. A new method of deriving spectrum for bistatic SAR processing ［J］. IEEE Geoscience and Remote Sensing Letters, 2010, 7(3): 483486.

［14］Zhong H, Liu X. An effective focusing approach for azimuth invariant bistatic SAR processing ［J］. Signal Processing, 2010, 90(1): 395404.

一种双站合成孔径雷达的高分辨率成像与合成方法

Imaging and Auto-Combination Processing Technique for Bistatic Synthetic Aperture Radar

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 0

编辑推荐

Metrics

本文评价