全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
电子学报  2012 

基于投影近似子空间跟踪技术的自聚焦算法

DOI: 10.3969/j.issn.0372-2112.2012.06.031, PP. 1251-1256

Keywords: 相位梯度自聚焦(PGA),特征向量法,特征分解,投影近似子空间跟踪(PAST)

Full-Text   Cite this paper   Add to My Lib

Abstract:

基于特征向量法的自聚焦算法具有比相位梯度自聚焦(PhaseGradientAutofocus,简称PGA)算法更好的算法性能,但该算法必须对协方差矩阵进行特征分解,所以运算量大.利用投影近似子空间跟踪(ProjectionApproximationSubspaceTracking,简称PAST)技术的自聚焦算法可以解决上述问题.通过实际数据处理结果对比,证明基于PAST技术的自聚焦算法是一种可满足实时处理要求的有效自聚焦方法.

References

[1]  Calloway T M,Donohoe G W.Subaperture autofocus for synthetic aperture radar[J].IEEE Trans on Aerospace and Electronic Systems,1994,30(2):6l7-621.
[2]  Snarski C A.Rank one phase error estimation for range-Doppler imaging[J].IEEE Trans on Aerospace and Electronic Systems,1996,32(2):676-688.
[3]  Li Lian-lin,Zhang Wen-ji,et al.A novel autofocusing approach for real-time through-wall imaging under unknown wall characteristics[J].IEEE Trans on Geoscience and Remote Sensing,2010,48(1):423-431.
[4]  Wahl D E,Eichel P H,et al.Phase gradient autofocus-a robust tool for high resolution SAR phase correction[J].IEEE Trans on Aerospace and Electronics Systems,1994,30(3):827-835.
[5]  Rossum W L V,Otten M P G,et al.Extended PGA for range migration algorithms[J].IEEE Trans on Aerospace and Electronics Systems,2006,42(2):478-488.
[6]  Macedo K A C,Scheiber R,et al.An autofocus approach for residual motion errors with application to airborne repeat-pass SAR interferometry[J].IEEE Trans on Geoscience and Remote Sensing,2008,46(10):3151-3162.
[7]  Yang Bin.An extended of the PAST algorithm to both rank and subspace tracking .IEEE Signal Process Lett,1995,2(9):179-182.
[8]  保铮,邢孟道,等.雷达成像技术[M].北京:电子工业出版社, 2005.
[9]  Piotr S,Krzysztof S K.Coherent mapdrift technique[J].IEEE Trans on Geoscience and Remote Sensing,2010,48(3):1505-1517.
[10]  Ye Wei,Yeo T S,et al.Weighted least-squares estimation of phase errors for SAR/ISAR autofocus[J].IEEE Trans on Geoscience and Remote Sensing,1999,37(5):2487-2494.
[11]  Cao Pan,Xing Meng-dao,et al.Minimum entropy via subspace for ISAR autofocus .IEEE Trans on Geoscience and Remote Sensing Letters,2010,7(1):205-209.
[12]  邓云凯,王宇,等.基于对比度最优准则的自聚焦优化算法研究[J].电子学报,2006,34(9):1742-1744. Deng Yun-kai,Wang Yu,et al.The research of autofocus optimization algorithm based on contrast optimization criterion[J].Acta Electronica Sinica,2006,34(9):1742-1744.(in Chinese)
[13]  Jakowatz C V,Jr,et al.Eigenvector method for maximum-likelihood estimation of phase errors in synthetic-aperture radar imagery[J].Journal of the Optical Society of America,1993,10(12):2539-2546.
[14]  Jakowatz C V,Jr,et al.Spotlight Mode Synthetic Aperture Radar[M].Boston:Kluwer Academic Publishers,1996.
[15]  Robert C P,Casella G.Monte Carlo Statistical Methods[M].New York:Springer,2004.
[16]  Yang Bin.Projection approximation subspace tracking[J].IEEE Trans on Signal Process,1995,43(1):95-107.
[17]  Abed M K,Chkeif A,et al.Fast orthonormal PAST algorithm[J].IEEE Signal Process Lett,2000,7(3):60-62.
[18]  李森,邱天爽.Alpha稳定分布噪声中的韧性投影近似子空间跟踪算法[J].电子学报,2009,37(3):519-522. Li Sen,Qiu Tian-shuang.A robust PAST algorithm in alpha stable noise environment[J].Acta Electronica Sinica,2009,37(3):519-522.(in Chinese)
[19]  Yang Jian,Xi Hong-sheng,et al.RLS-based adaptive algorithms for generalized eigen-decomposition[J].IEEE Trans on Signal Process,2006,54(4):1177-1188.
[20]  Shen Ming-wei,Zhu Dai-yin,Zhu Zhao-da.Reduced-rank space-time adaptive processing using a modified projection approximation subspace tracking deflation approach[J].IET Radar,Sonar and Navigation,2009,3(1):93-100.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133