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圆迹SAR运动误差分析及补偿技术 被引量：4

Motion error analysis and compensation techniques for circular SAR
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摘要 圆迹合成孔径雷达(circular synthetic aperture radar,CSAR)可以对感兴趣的区域进行全方位、长时间观测,同时获得高分辨的图像。CSAR长合成孔径时间和宽波束角的特点,导致其回波相位具有复杂的距离空变性和方位空变性,无法直接运用传统运动补偿算法。详细分析了该成像模式下雷达的三维位置误差对回波包络和相位的影响,将Chirp-Z变换引入到包络误差的空变性补偿中,提出了CSAR距离和方位空变的运动补偿方法。仿真结果验证了所提方法的可行性和有效性。 Circular synthetic aperture radar （CSAR） can maintain persistent surveillance of an area of in- terest for a long time, and CSAR can get high resolution images from different azimuthal directions. Opera- ting with long synthetic aperture time and wide beam, CSAR produces complicated range and azimuth-vari ant phase errors. Therefore most traditional motion compensation techniques are invalidated. The effect on radar＇s 3-D motion error to the echo envelop and phase is analyzed, and the Chirp-Z transform is introduced to compensate the variant amplitude error. Then a range- and azimuth-dependent motion compensation algo- rithm for CSAR imaging is presented. Simulation results validate the feasibility and effectiveness of the pro- posed approach.
作者 周芳 孙光才 吴玉峰 邢孟道 保铮
机构地区 西安电子科技大学雷达信号处理重点实验室
出处 《系统工程与电子技术》 EI CSCD 北大核心 2013年第5期948-955,共8页 Systems Engineering and Electronics
基金 国家自然科学基金(61222108)资助课题
关键词 合成孔径雷达 圆迹合成孔径雷达 运动补偿 宽波束 synthetic aperture radar （SAR） circular SAR （CSAR） motion compensation wide beam
分类号 TN957.52 [电子电信—信号与信息处理]
  • 相关文献

参考文献15

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二级参考文献14

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共引文献24

同被引文献43

  • 1李伟,梁甸农,董臻.基于虚假场景的合成孔径雷达干扰方法研究[J].系统工程与电子技术,2005,27(10):1741-1743. 被引量：8
  • 2甘荣兵,王建国.对SAR的几何目标欺骗干扰的快速算法[J].现代雷达,2006,28(2):40-42. 被引量：24
  • 3唐智,李景文,周荫清,王宝发.曲线合成孔径雷达信号模型与孔径形状研究[J].系统工程与电子技术,2006,28(8):1115-1119. 被引量：5
  • 4保铮，邢孟道，王彤．雷达成像技术[M]．北京：电子工业出版社，2006．
  • 5Octavio P, Pau P I, Muriel P, et al. Fully-polarimetric high-reso- lution 3-D imaging with circular SAR at L-bandrJ]. IEEE Geo- science and Remote Sensing Letters, 2014, 52(6): 3074- 3090.
  • 6Octavio P, Pau P I, Rolf S, et al. Polari-metric 3-D reconstruc- tion from multi-circular SAR at P-band[J]. IEEE Geoscience and Remote Sensing Letters, 2014, 11(4) : 803 - 807.
  • 7Poisson J B, Oriot H M, Tupin F. Ground moving target trajec- tory reconstruction in single-channel circular SAREJ]. IEEEGe- 9science and Remote Sensing Letters, 2015, 53(4) : 1976 - 1984.
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  • 9Moore L, Leec P, Joshua A. Three-dimensional position accura- cy in circular synthetic aperture radar[J]. IEEE Aerospace and Electronic Systems Magazine, 2014,29(1) : 29 - 40.
  • 10Zhao B, Zhou F, Bao Z. Deception jamming for squint SAR based on multiple receivers E J]. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2015,8(8) : 3988 - 3998.

引证文献4

二级引证文献12

系统工程与电子技术
2013年 第5期

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