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Volume 30 Issue 01
Jan.  2004
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Journal of Beijing University of Aeronautics and Astronautics  > 2004  >  30(01): 36-39.
Dang Qun, Lü Shanwei, Dong Shengboet al. Analysis of elevation error for radar seeker tracking low altitude target[J]. Journal of Beijing University of Aeronautics and Astronautics, 2004, 30(01): 36-39. (in Chinese)
Citation: Dang Qun, Lü Shanwei, Dong Shengboet al. Analysis of elevation error for radar seeker tracking low altitude target[J]. Journal of Beijing University of Aeronautics and Astronautics, 2004, 30(01): 36-39. (in Chinese)
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Analysis of elevation error for radar seeker tracking low altitude target

  • 1.

    School of Electronics and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

  • 2. China Aerospace Science and Industry Corporation Second Academy, Beijing 100854, China

  • Received Date: 23 Sep 2002
  • Publish Date: 31 Jan 2004
    Abstract
  • The elevation error of seeker tracking low altitude target was affected by multipath propagation. The traditional ‘little plane’,which calculates diffuse reflection coefficients, was used in uniform terrain meshing. But uniformterrain meshing has a high error rate in big grazing angle. An improved method which doesn't divide terrain uniformly and analyses effects of four paths propagation was proposed. The method of estimation elevation estimation commonly is open-loop track. A close-loop tracking method and improved method of‘little plane’which calculates diffuse reflection on ground/sea were presented. When the seeker track low altitude target, the elevation error was simulated better and calculation time was greatly reduced.

     

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  • [1] Trizna D B. A model for Brewster angle damping and multipath effects on the microwave radar sea echo at low grazing angles[J].IEEE Trans on Geoscience and Remote Sensing,1997, 35(6) :1232~1244 [2] Sletten M A, Trizna D B, Hansen J P. Ultrawide-band radar observations of multipath propagation over the sea surface[J].IEEE Trans on Antennas and Propagation,1996, 44(5):646~651 [3] Lo T, Litva J.Use of a highly deterministic multipath signal model in low-angle tracking[J]. IEEE Proceedings-F,1991,138(2):163~171 [4] Ewell G W, Reedy E K. Multipath effects on low-angle millimeter wavelength radar tracking .In:Burbridge R N. International Conference Radar-87 .London,New York:Institution of Electrical Engineers,1987.423~427 [5] Bruder J A,Saffold J A.Multipath effects on low-angle tracking at millimetre-wave frequencies[J].IEEE Proceedings-F,1991,138(2):172~184
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