Vol. 25

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2010-08-20

FA-ScanSAR : Full Aperture Scanning Pulse by Pulse for the Nearspace Slow-Moving Platform Borne SAR

By Bing Sun, Jie Chen, Chun-Sheng Li, and Yin-Qing Zhou
Progress In Electromagnetics Research B, Vol. 25, 23-37, 2010
doi:10.2528/PIERB10061304

Abstract

Because the nearspace slow-moving platform borne synthetic aperture radar (SAR) can realize high resolution imaging using low pulse repetition frequency (PRF), a full-aperture ScanSAR (FA-ScanSAR) operation, which switches the range beam pulse by pulse, was proposed for wide swath imaging. This operation separates the wide swath into several sub-swaths, and each of which can be illuminated by a narrow range beam. The SAR antenna switches the range beam to point at each of the sub-swaths in turn, transmits pulses and receives echoes pulse by pulse. The design method of main system parameters and the calculating expressions of the performance indexes are addressed in the paper. A design example is given to compare the performance of the conventional strip operation, ScanSAR and FA-ScanSAR operation. The results show that FA-ScanSAR operation can obtain high resolution by full aperture accumulation in wide swath and improve the signal-to-noise ratio of SAR images for the nearspace slow-moving platform borne SAR.

Citation


Bing Sun, Jie Chen, Chun-Sheng Li, and Yin-Qing Zhou, "FA-ScanSAR : Full Aperture Scanning Pulse by Pulse for the Nearspace Slow-Moving Platform Borne SAR," Progress In Electromagnetics Research B, Vol. 25, 23-37, 2010.
doi:10.2528/PIERB10061304
http://jpier.org/PIERB/pier.php?paper=10061304

References


    1. Curlander, J. C. and R. N. McDonough, Synthetic Apeture Radar Systems and Signal Processing, Wiley Series in Remote Sensing, John Wiley & Sons, 1991.

    2. Currie, A. and M. A. Brown, "Wide-swath SAR," IEE Proceedings, Vol. 139, No. 2, 122-135, April 1992.

    3. Younis, M., Digital beam-forming for high resolution wide swath real and synthetic aperture radar, Doctoral dissertation, University of Karlsruhe, July 2004.

    4. Freeman, A., et al., "SweepSAR: Beam-forming on receive using a reflector-phase array feed combination for spaceborne SAR," Proc. of 2009 IEEE Radar Conference, 1-9, Pasadena, USA, May 4--8, 2009.

    5. Moore, R. K., J. P. Classssem, and Y. H. Lin, "Scanning spaceborne synthetic aperture radar with integrated radiometer," IEEE Trans. on Aerosp. Electron. Syst., Vol. 17, No. 3, 410-420, May 1981.
    doi:10.1109/TAES.1981.309069

    6. De Zan, F. and A. M. Guarnieri, "TOPSAR: Terrain observation by progressive scans," IEEE Trans. Geosci. Remote Sensing, Vol. 44, No. 9, 2352-2360, September 2006.
    doi:10.1109/TGRS.2006.873853

    7. Carrara, W. G., R. S. Goodman, and R. M. Majewski, Spotlight Synthetic Apeture Radar, Artech House, Boston, 1995.

    8. Callaghan, G. D., Wide swath SAR: Overcoming the trade-off between swath and azimuth resolution, Doctoral Dissertation, Queensland Univ., Brisbane, Australia, 1999.

    9. Li, Z. F., et al., "Generation of wide-swath and high-resolution sar images from multichannel small spaceborne SAR systems," IEEE Geosci. Remote Sensing Letters, Vol. 2, No. 1, 82-86, January 2005.
    doi:10.1109/LGRS.2004.840610

    10. Gebert, N. and G. Krieger, "Azimuth phase center adaptation on transmit for high-resolution wide-swath SAR imaging," IEEE Geosci. Remote Sensing Letters, Vol. 6, No. 4, 782-786, October 2009.
    doi:10.1109/LGRS.2009.2025245

    11. Freeman, A., et al., "Deformation, ecosystem structure, and dynamics of ice (DESDynI)," Proc. of EUSAR, Vol. 2, 115-118, Friedrichshafen, Germany, June 2--5, 2008.

    12. Allen, E. H., "The case for near space," Aerospace America, 31-34, February 2006.

    13. Bolkcom, C., "Potential military use of airships and aerostats," CRS Report for Congress, RS211886, November 11, 2004.

    14. Weeks, D. J., S. H. Walker, and R. L. Sackheim, "Small satellites and the DARPA/Air force FALCON program," Acta Astronautica, Vol. 57, 469-277, 2005.
    doi:10.1016/j.actaastro.2005.03.058

    15. Wang, W. Q., J. Y. Cai, and Q. C. Peng, "Near-space SAR: A revolutionizing remote sensing mission," Proc. of APSAR Conf., 127-131, Huangshan, China, 2007.

    16. Wang, W. Q., Q. C. Peng, J. Y. Cai, and L. Wang, "Azimuth signal processing for near-space high-resolution and wide-swath imaging," Proc. of ICSP, 2330-2332, 2008.

    17. Wang, W. Q., J. Y. Cai, and Q. C. Peng, "Near-space microwave radar remote sensing: Potentials and challenge analysis," Remote Sensing, Vol. 2, 717-739, 2010.
    doi:10.3390/rs2030717