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...

一种适用于调频步进信号SAR的2维子孔径处理算法

DOI: 10.11834/jig.20091003

Keywords: 合成孔径雷达,极坐标格式算法,2维子孔径处理,调频步进信号,带宽合成,空变相位补偿

Full-Text   Cite this paper   Add to My Lib

Abstract:

为了将机载SAR超高分辨率(0?1m)条件下的超大带宽信号的实现和成像信号的处理进行有效结合,首先深入分析了基于PFA的2维重叠子孔径处理算法(PFOSA),并对算法中采用的不合理近似进行了改进;然后将PFOSA应用于调频步进信号的SAR成像处理,在此基础上,提出了一种基于调频步进信号的2维子孔径处理算法。该算法不仅能够将调频步进信号处理与距离子孔径处理相结合,使之无需常规的脉冲合成过程,而且还能够利用子孔径处理获得的目标粗分辨位置信息来有效补偿脉冲簇内由载机运动引起的空变相位误差,从而克服了常规脉冲合成方法无法补偿空变相位误差的缺点。仿真数据处理结果表明,该算法是有效的。

References

[1]  Cantalloube H.Airborne X-band SAR imaging with 10cm resolutiontechnical challenge and preliminary results[J].IEE Proceedings,Radar,Sonar and Navigation,2006,153(2):163-176.
[2]  Wilkinson A J,Lord R T,Inggs M R.Stepped-frequency processing by reconstruction of target reflectivity spectrum[A].In:Proceedings of the South African Symposium on Communications and Signal Processing[C],Cape Town,South African,1998:101-104.
[3]  Ender J H G.PAMIR-a wide phased array SAR/MTI system[J].IEE Proceedings,Radar,Sonar and Navigation,2003,150 (3):165-172.
[4]  Mita D D.Convolution backprojection image reconstruction for spotlight mode synthetic aperture radar[J].IEEE Transactions on Image Processing,1992,1(4):505-517.
[5]  Jakowatz C V,Wahl D E.Spotligh-mode Synthetic Aperture Radar:A Signal Processing Approach[M].Boston,MA,USA:Kluwer Academic Publishers,1996.
[6]  Doerry A W.Synthetic Aperture Radar Processing with Tiered Subapertures[D].University of New Mexico,Albuquerque,New Mexico,USA,1995.
[7]  Schiimpf H,Wahlen A.High range resolution by means of synthetic bandwidth generated by frequency-stepped chirps[J].Electronics Letters,2003,39(18):1346-1348.
[8]  Lord R T,Inggs M R.High resolution SAR processing using steppedfrequencies[A].In:Proceedings of IEEE Geoscience Remote Sensing Symposium[C],Singapore,1997:490-492.
[9]  Inggs M R,Van M W.A simulation of synthetic range profile radar[A].In:Proceedings of the South African Symposium on Communications and Signal Processing[C],Cape Town,South African,1992:1-16.
[10]  Carrara W G,Goodman R S,Majewski R M.Spotlight Synthetic Aperture Radar:Signal Processing Algorithms[M].Boston,MA,USA:Artech House,1995.
[11]  Bauck J L.Tomographic processing of spotlight-mode synthetic aperture radar signals with compensation for wavefront curvature[A].In:Proceedings of IEEE International Conference on Acoustics,Speech and Signal Processing[C],New York,USA,1988:1192-1195.
[12]  Burns B L,Cordaro J T.SAR image formation algorithm that compensates for the spatially variant effects of antenna motion[A].In:Proceedings of SPIE[C],Orlando,FL,USA,1994:14-24.
[13]  Doerry A W.Synthetic aperture radar processing with polar formatted subapertures[A].In:Proceedings of the 28th Asilomar Conference on Signals Systems & Computers[C],Pacific Grove,California,USA,1994:1210-1215.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133