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Volume 31 Issue 2
Dec.  2010
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Zhao Guang-hui, Chen Bai-xiao, Wu Xiang-dong, Zhang Shou-hong. An Algorithm Based on Differential Preprocessing of Low Elevation Estimation in VHF Radar[J]. Journal of Electronics & Information Technology, 2009, 31(2): 363-365. doi: 10.3724/SP.J.1146.2007.01381
Citation: Zhao Guang-hui, Chen Bai-xiao, Wu Xiang-dong, Zhang Shou-hong. An Algorithm Based on Differential Preprocessing of Low Elevation Estimation in VHF Radar[J]. Journal of Electronics & Information Technology, 2009, 31(2): 363-365. doi: 10.3724/SP.J.1146.2007.01381

An Algorithm Based on Differential Preprocessing of Low Elevation Estimation in VHF Radar

doi: 10.3724/SP.J.1146.2007.01381
  • Received Date: 2007-08-30
  • Rev Recd Date: 2008-01-24
  • Publish Date: 2009-02-19
  • Considering the presence of multi-path propagation, it is quite difficult for VHF radar to measure the altitude of a low elevation target. In this paper, a new algorithm is proposed to estimate the DOA of the target, which by using the differential preprocessing, the phase of the multipath wave can be compensated, the echo from multi-path propagation can be subtracted form the signal that received. Then the general DBF can be used to estimate the direction of the direct wave. The Monte-Carlo experiments prove that the performance of the new algorithm is better than that of the spatial smoothing technique and the forward-backward predictors for bearing estimation. The real data from some VHF radar demonstrates the validity and feasibility of the new algorithm.
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