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Volume 30 Issue 2
Jan.  2011
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Zhang Da-wei, Wang Yan-fei, Zhan Xue-li, Fang Li-li. A Modified StepTransform Algorithm Based on CZT and Its Application to LFM Pulse Compression[J]. Journal of Electronics & Information Technology, 2008, 30(2): 306-309. doi: 10.3724/SP.J.1146.2006.00988
Citation: Zhang Da-wei, Wang Yan-fei, Zhan Xue-li, Fang Li-li. A Modified StepTransform Algorithm Based on CZT and Its Application to LFM Pulse Compression[J]. Journal of Electronics & Information Technology, 2008, 30(2): 306-309. doi: 10.3724/SP.J.1146.2006.00988

A Modified StepTransform Algorithm Based on CZT and Its Application to LFM Pulse Compression

doi: 10.3724/SP.J.1146.2006.00988
  • Received Date: 2006-07-06
  • Rev Recd Date: 2006-12-18
  • Publish Date: 2008-02-19
  • A new modified StepTransform algorithm based on CZT is provided in this paper in order to compensate for the insufficiencies of the traditional StepTransform algorithm. The order of the traditional StepTransform algorithm is changed by FFT for the fine resolution analysis on the first stage and CZT for the coarse resolution analysis on the second stage. The phenomenon of grating lobes and amplitude modulation is avoided and ideal LFM pulse compression result can be gotten in this new method. The validity and feasibility of the new algorithm is tested by the deduction of the formulation and simulation of the theory.
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  • Perry R P and Martinson L W. Radar matched filtering. In E.Brookner (Ed.), Radar Technology. Dedham, MA: ArtechHouse, 1977: 163-169.[2]Wu K H and Vant M R. Extensions to the step-transformSAR processing techniques, IEEE Trans[J].on Aerospace andElectronic Systems.1985, 21(3):338-344[3]Perry R P and Daiser H W. Digital step transform approachto airborne radar processing, IEEE NAECON Processings,May 1973: 563-574.[4]Sack M and Cumming I G. Application of efficient linear FMmatched filtering algorithms to synthetic aperture radarprocessing. IEE Proc.- F., 1985, 132(1): 45-57.[5]王世一. 数字信号处理(修订版). 北京:北京理工大学出版社,1997: 151-156.[6]Moreira A. Real-time synthetic aperture radar (SAR)processing with a new subaperture approach[J].IEEE Trans. onGeoscience and Remote Sensing.1992, 30(4):714-722[7]Burns B L and Cordaro J T. SAR image formation algorithmthat compensates for the spatially variant effects of antennamotion[J].SPIE Proceedings. SPIEs International Symposiumon Optical Engineerin g in Aerospace Sensing.1994, 2230:14-24[8]McGoey-Smith A D and Vant M R. Modification of the SARstep transform algorithm[J].IEEE Trans. on Aerospace andElectronic Systems.1992, 28(3):666-673
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