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Volume 31 Issue 2
Dec.  2010
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Xia Yu-li, Lei Hong, Huang Yao. Using Multi-central Frequency Distributed Small Satellite SAR to Achieve Wide Swath and Two Dimensional High Resolution[J]. Journal of Electronics & Information Technology, 2009, 31(2): 501-504. doi: 10.3724/SP.J.1146.2007.01327
Citation: Xia Yu-li, Lei Hong, Huang Yao. Using Multi-central Frequency Distributed Small Satellite SAR to Achieve Wide Swath and Two Dimensional High Resolution[J]. Journal of Electronics & Information Technology, 2009, 31(2): 501-504. doi: 10.3724/SP.J.1146.2007.01327

Using Multi-central Frequency Distributed Small Satellite SAR to Achieve Wide Swath and Two Dimensional High Resolution

doi: 10.3724/SP.J.1146.2007.01327
  • Received Date: 2007-08-15
  • Rev Recd Date: 2008-02-01
  • Publish Date: 2009-02-19
  • Distributed small satellite SAR can overcome the traditional contradiction of swath and azimuth resolution. In this paper, an algorithm to achieve both two dimensional high resolution and wide swath is proposed. Every small satellite work in the active state, they transmit and receive different frequency band signal simultaneity. First, the azimuth ambiguity is eliminated in each frequency sub-band, then the signal is rectified to zero Doppler frequency, after that this algorithm does the range spectral synthesis to achieve high range resolution. In other aspects, this active work mode can enhance the systems average transmit power, and increase the SNR.
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  • Li Z F, Bao Z, Wang H Y, and Liao G S. Performanceimprovement for constellation SAR using signal processingtechniques[J].IEEE Trans. on Aerospace and ElectronicSystems.2006, 42(2):436-452[2]Li Z F and Bao Z. A novel approach for wide-swath andhigh-resolution SAR image generation from distributed smallspaceborne SAR systems. International Journal of RemoteSensing, 2006, 27(5): 1015-1033.[3]Xing M D, Li Z F, Bao Z, and Liao G S. Doppler ambiguityresolving in distributed microsatellites radar imaging.Chinese of Journal Electronics, 2005, 14(4): 721-726.[4]Li Z F, Wang H Y, Tao S, and Bao Z. Generation ofwide-swath and high-resolution SAR images frommultichannel small spaceborne SAR systems[J].IEEEGeoscience and Remote Sensing Letters.2005, 2(1):82-86[5]闫鸿慧, 王岩飞, 于海锋, 李俐, 一种基于距离补偿的分布式小卫星双基SAR 成像方法. 电子与信息学报, 2005, 27(5):771-774.[6]Lord R T and Inggs M R. High range resolution SARprocessing using stepped-frequencies[J].Proc. IEEE GeoscienceRemote Sensing Symp., IGARSS97, Singapore, August.1997,1:490-492[7]Lord R T and Inggs M R. High range resolution radar usingnarrowband linear chirps offset in frequency. Proc. IEEESouth Africa Symp. on Communications and SignalProcessing, COMSIG'97, Grahamstown,, September 1997:9-12.[8]Yan H H, Wang Y F, Yu H F, and Li L. Distributed satellitesSAR high resolution imaging via spectral synthesis[J].Journalof Electronics Information Technology.2005, 27(5):771-774
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