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双站SAR多PRF同步链同步方法 被引量:2

Multi-PRF Link Method for Bistatic SAR Synchronization
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摘要 收发单元之间的相位同步是双站合成孔径雷达的关键问题之一。针对实际双站SAR实验系统中所体现出的问题,该文提出了一种多PRF同步链的双站合成孔径雷达同步方法,该方法通过双向同步链实现高精度的随机相位误差测量;并利用中国余数定理解算频率差测量中的模糊,实现低同步频率条件下双站SAR单元频率源间慢变化频率差的无模糊测量。最后,通过仿真验证了方法的有效性。 Phase synchronization is a key issue in bistatic and multistatic Synthetic Aperture Radar(SAR) imaging.This paper discusses this issue based on experiment data,presents a multi-PRF link synchronization scheme,which solves frequency measurement ambiguities by using of Chinese remainder theorem and accurately estimates random phase by duplex multi-channel link with low synchronization frequency.The performance of presented scheme is analyzed in theory and demonstrated with simulations.
出处 《电子与信息学报》 EI CSCD 北大核心 2010年第6期1338-1342,共5页 Journal of Electronics & Information Technology
关键词 双站SAR 同步 双向同步链 中国余数定理 Bistatic SAR Synchronization Duplex synchronization link Chinese Remainder Theorem(CRT)
作者简介 周良将:男,1981年生,博士生,研究方向为合成孔径雷达系统设计、系统误差补偿及其相关信号处理技术.通信作者:周良将ljzhou@ustc.edu 梁兴东:男,1973年生,研究员,研究方向包括雷达系统设计及雷达信号处理技术等. 丁赤飚:男,1969年生,研究员,博士生导师,研究方向为先进合成孔径雷达系统和信号处理技术、数字信号处理、信息系统技术等.
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参考文献8

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二级参考文献11

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共引文献11

同被引文献10

  • 1Krieger G,Moreira A,Fiedler H,et al.TanDEM-X:A satelliteformation for high-resolution SAR interferometry[J].IEEETrans.Geosci.Remote Sens.,2007,45(11):3317-3341.
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  • 3Krieger G,Younis M.Impact of oscillator noise in bistatic andmultistatic SAR[J].IEEE Trans.Geosci.Remote Sens.Lett.,2006,3(3):424-428.
  • 4Wang W Q,Ding C B,Liang X D.Time and phase synchronisationvia direct-path signal for bistatic synthetic aperture radar systems[J].IET Radar Sonar Navig,2008,2(1):1-11.
  • 5Younis M,Metzig R,Krieger,et al.Performance prediction andverification for the synchronization link of TanDEM-X[C].inProc.IGARSS,2007.
  • 6Younis M,Metzig R,Krieger G.Performance prediction of aphase synchronization link for bistatic SAR[J].IEEE Trans.Geosci.Remote Sens.Lett.,2006,3(3):429-433.
  • 7雷科,汪学刚,公岷.基于双向同步技术的机载双站SAR同步研究[J].系统工程与电子技术,2008,30(4):641-643. 被引量:5
  • 8况凌,沈晓峰,杨万麟.频率源稳定性对双基地SAR的分辨率影响[J].电子科技大学学报,2009,38(2):165-168. 被引量:3
  • 9谢先明,皮亦鸣.频率源噪声对双基SAR成像的影响及评估[J].系统工程与电子技术,2010,32(2):275-278. 被引量:6
  • 10何志华,何峰,张永胜,梁甸农.分布式SAR时间同步误差的影响分析与试验验证[J].宇航学报,2011,32(6):1373-1378. 被引量:5

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