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基于随机霍夫变换的干涉ISAR横向定标算法 被引量：7

A Novel Method of Cross-range Scaling Interferometric ISAR Based on Randomized Hough Transform
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摘要 针对ISAR像的横向定标、干涉ISAR(InISAR)中相位缠绕问题,该文提出一种基于随机霍夫变换(Randomized Hough Transform,RHT)的InISAR横向定标算法。该算法基于ISAR像中的特显点,由特显点的干涉相位主值得到的横向距离与多普勒频率的线性关系,利用RHT估计真实横向距离与多普勒频率之间的尺度因子,对ISAR像横向定标,从而避免了繁琐的相位解缠绕过程。仿真结果表明该算法可以实现对ISAR像的定标,并具有一定的抗噪声性能。 Considering the phase wrapping issue in the cross-range scaling of interferometrin ISAR, a novel algorithm of cross-range scaling is proposed based on Randomized Hough Transform （RHT）. Using the linear relationship between the azimuth positions derived from the wrapping interferometric phases and the Doppler frequencies of the dominant scatters in ISAR image, the proposed Mgorithm estimates the scMe factor between true azimuth position and Doppler frequency by RHT and determines the ISAR image scale in the cross-range direction, consequently avoiding the complex phase unwrapping procedure. The simulation results verify the validity and anti-noise capability of the proposed algorithm.
作者 李飞 纠博 刘宏伟
机构地区 西安电子科技大学雷达信号处理国家重点实验室
出处 《电子与信息学报》 EI CSCD 北大核心 2013年第1期49-55,共7页 Journal of Electronics & Information Technology
基金 国家自然科学基金(61271024 61201292 61201283) 新世纪优秀人才支持计划(NCET-09-0630) 全国优秀博士学位论文作者专项资金(FANEDD-201156) 中央高校基本科研业务费专项资金联合资助课题
关键词 干涉ISAR 随机霍夫变换(RHT) 相位缠绕 尺度因子 横向定标 Interferometric ISAR Randomized Hough Transform （RHT） Phase wrapping Scale factor Crossrange scaling
分类号 TN958 [电子电信—信号与信息处理]
  • 相关文献

参考文献12

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二级参考文献15

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共引文献21

同被引文献80

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引证文献7

二级引证文献42

电子与信息学报
2013年 第1期

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