Wideband Doa Estimation By Using Off-Grid Technique For A Cylindrical Conformal Array
2016 CIE INTERNATIONAL CONFERENCE ON RADAR (RADAR)(2016)
摘要
DOA estimation algorithms based on sparse representations mainly work on uniform linear antenna array composed of ideal elements whose radiation patterns are omni-directional and identical, let alone the broadband signals. In this paper, a new wideband DOA estimation method for cylindrical conformal array is presented. By using the off-grid technique, the limitation that the unknown source directions should belong to a predefined discrete angular grid can still be overcome. Simulation results demonstrate that the proposed method has higher estimation accuracy performance than traditional sparsity-based DOA estimation approaches with both coarse and dense mesh density.
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关键词
wideband DOA estimation,off-grid technique,sparse representations
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