期刊文献+

运动目标的全极化一维成像方法研究 被引量:2

Fully Polarized One-Dimensional Imaging for Moving Target
下载PDF
导出
摘要 提出了一种新的运动目标全极化一维成像方法,该方法利用解线性调频处理的小场景回波成像特性,使用小于发射脉冲宽度的时间延迟来实现不同极化通道之间的隔离,既能克服瞬时极化测量体制受发射波形特性限制的缺点,又能抑制传统分时极化测量体制长时间间隔导致的目标极化特性去相关效应。建立了运动目标的回波模型,分析了各相位因子的性质,针对不同的相位因子特性提出了相应的补偿方法:首先利用目标互易性原理对不同极化通道之间的相位差进行补偿,然后根据最小熵值准则实现对时延一次项和高次项精确补偿。仿真结果表明本文方法的有效性。 In order to solve the probelem of decorrelation of target polarization characteristic in time division polarization measurement and the waveform limit in instantaneous polarization radar,a new fully polarized one-dimension imaging method for moving target is proposed based on dechirping.One trait of dechirping is the imaging of small scene.A delayed and smaller than the pulse width between two orthogonal polarized signals is used to get the isolation between different polarized channels.The smaller delay also can eliminate the decorrelation of target polarization characteristic induced by traditional long time division.An echo model for moving target is presented,and the theoretic model of phase signature is derived.According to different factors influencing the echo phase,a new compensation method is proposed.First,the inconsistent phase between different polarized channels is compensated by using the principle of reciprocity of target.Then,the phase is accurately compensated based on the entropy minimization principle.Numerical simulation results illustrate the validity of proposed method.
出处 《宇航学报》 EI CAS CSCD 北大核心 2011年第5期1136-1142,共7页 Journal of Astronautics
基金 国家自然科学基金重点项目(60736006) 国家自然科学基金青年科学基金项目(60802078)
关键词 运动目标 全极化一维距离像 最小熵值准则 解线性调频 Moving target Fully polarized range profile Entropy minimization principle Dechirping
  • 引文网络
  • 相关文献

参考文献4

二级参考文献36

  • 1曹向东.一种高分辨雷达宽带信号处理速度补偿方法[J].现代雷达,2005,27(6):36-38. 被引量:5
  • 2施龙飞,王雪松,肖顺平,徐振海.干扰背景下雷达最佳极化的分步估计方法[J].自然科学进展,2005,15(11):1324-1329. 被引量:13
  • 3王雪松,王剑,王涛,李永祯,徐振海,施龙飞.雷达目标极化散射矩阵的瞬时测量方法[J].电子学报,2006,34(6):1020-1025. 被引量:38
  • 4Ksendzuk A V,Volosyuk V K,Sologub N S.Advantages of the wideband and ultra wideband signals in the remote sensing[C].Ultrawideband and Ultrashort Impulse Signals,2004 Second International Workshop.2004:240-242.
  • 5Li H,Yang S H.Using range profiles as feature vectors to identify aerospace objects[J].IEEE Trans.on AP.1993,41(3):261-268.
  • 6Chen Hang-yong,Liu Yong-xiang,Jiang Wei-dong,Guo Gui-rong.A New Approach for Synthesizing the Range Profile of Moving Targets via Stepped-Frequency Waveforms.IEEE Geoscience and Remote SenSing Letters 2006,3(3):406-409.
  • 7Liu Ai-fang,Zhu Xiao-hua,Lu Jin-hui,Liu Zhong.The ISAR range profile compensation of fast-moving target using the dechirp method[C]In:IEEE Int.Conf.Neural Networks & Signal Processing Nanjing,China,Dec.2003:1619-1623.
  • 8Caputi W J.STRETCH:A Time-transformation Technique[J].IEEE Trans.on AES,1971,7(2):269-278.
  • 9Byron M.et al.Linear FM radar effects on moving target signatures[J].SPIE 4382,2001:164-173.
  • 10Liu Zheng-she, Li Jian. Implementation of the RELAX algorithm[J].IEEE Trans. on AES, 1998,34(2) :657 - 664.

共引文献48

同被引文献25

  • 1金胜,高梅国,邓颖丽.基于Dechirp处理的雷达宽带测量技术[J].现代雷达,2008,30(5):82-85. 被引量:5
  • 2常宇亮,王雪松,李永祯,肖顺平.极化测量雷达的信号选择与处理[J].中国科学(F辑:信息科学),2009,39(12):1296-1304. 被引量:10
  • 3王雪松,王剑,王涛,李永祯,徐振海,施龙飞.雷达目标极化散射矩阵的瞬时测量方法[J].电子学报,2006,34(6):1020-1025. 被引量:38
  • 4王峰,傅有光,孟兵,陈丽敏.基于傅里叶变换的雷达通道均衡算法性能分析及改进[J].电子学报,2006,34(9):1677-1680. 被引量:37
  • 5Caputi W J. Stretch: A time-transformation technique[ J ]. IEEE Trans. on AES, 1971, 7(2) : 269 -278.
  • 6Camp W W, Mayhan J T, Donnell R M. Wideband radar for ballistic missile defense and range-Doppler imaging of satellites [ J ]. Lincoln Laboratory Journal, 2000, 12 (2) : 267 - 280.
  • 7Avent R K, Shelton J D, Brown P. The ALCOR C-band imaging radar[ J]. IEEE Antennas and Propagation Magazine, 1996, 38 (3) : 16 -27.
  • 8De Witt J J, Nel W A J. Range Doppler dynamic range considerations for dechirp on receive radar [ C ]. The 5th European Radar Conference, Amsterdam, Netherlands, October 30 - 31, 2008.
  • 9Chen I-I, Wu Q, Gao Z B, et al. A pipelined memory-efficient architecture for ultra-long variable-size FFI" processors [ C ]. The International Conference on Computer Science and Information Technology, Singapore, August 2S-September 2, 2008.
  • 10Goodman D J, Carey M J. Nine digital filters for decimation and interpolation[ J]. IEEE Transactions on Acoustics, Speech, andSignal Processing, 1977, 25 (2) : 121 -126.

引证文献2

二级引证文献3

;
使用帮助 返回顶部