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Volume 22 Issue 5
Sep.  2000
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Sun Changyin, Bao Zheng . A ROBUST SUPER RESOLUTION ALGORITHM FOR RADAR IMAGING[J]. Journal of Electronics & Information Technology, 2000, 22(5): 735-740.
Citation: Sun Changyin, Bao Zheng . A ROBUST SUPER RESOLUTION ALGORITHM FOR RADAR IMAGING[J]. Journal of Electronics & Information Technology, 2000, 22(5): 735-740.

A ROBUST SUPER RESOLUTION ALGORITHM FOR RADAR IMAGING

  • Received Date: 1998-12-17
  • Rev Recd Date: 1999-07-29
  • Publish Date: 2000-09-19
  • Super resolution Algorithms can be used to obtain high resolution in ISAR imaging.But in the case of maneuvering target,the Doppler frequency of received signal scattered by target will not be constant,and these algorithms always suffer from the signal model error or fail completely when they are used in the cross range.In this paper,the first order approximate model of Doppler frequency is assumed,and an algorithm based on the extended RELAX method is proposed to estimate the parameters of chirp signals.The Cramer-Rao bounds are derived and simulation results are also present to demonstrate the performance of the algorithm.
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  • DeGraaf S R.SAR imaging via modern 2-D spectral estimation methods.IEEE Trans.on IP.1998,IP-7(5):729-761.[2]Benitz G R.Adaptive high-definition imaging.SPIE Proc.on Optical Engineering in Aerospace Sensing,Orlando,FL:April,1994,2230,106-119.[3]Li J,Stoica P.An adaptive filtering approach to spectral estimation and SAR imaging.IEEE Trans.on SP,1996,SP-44(6):1469-1484.[4]Li J,Stoica P.Efficient mixed-spectrum estimation with applications to target feature extraction.IEEE Trans.on SP,1996,SP-44(2):281-295.[5]孙晓兵,保铮.对改善ISAR成像质量方法的研究.电子学报,1998,26(6):91-93.[6]Bao Z,Wang G.Inverse synthetic aperture radar imaging of maneuvering targets[J].Opt.Eng.1998,37(5):1582-1588[7]Li J,Stoica P,Zheng D.Angle and waveform estimation via RELAX.IEEE Trans.on AES,1997,AES-33(3):1077-1087.
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