雷达系统杂波自由度研究

伍勇; 汤俊; 彭应宁

doi:10.3724/SP.J.1146.2007.00191

雷达系统杂波自由度研究

doi: 10.3724/SP.J.1146.2007.00191

基金项目:

国家自然科学基金(60602048)和清华大学基础研究基金(JCqn2005019)资助课题

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出版历程
- 收稿日期: 2007-01-30
- 修回日期: 2007-09-11
- 刊出日期: 2008-05-19

On Clutter Degrees of Freedom of the Radar System

摘要

摘要: 为了分析各种非均匀、非线性、非密集阵列雷达的杂波抑制性能，该文基于带限信号自由度理论提出了一种适用于多种阵列构型的杂波自由度估计方法。该方法能有效估计杂波大特征值的个数，并揭示了杂波自由度与系统参数、杂波场景的内在联系。研究表明，为了提高稀疏阵雷达的杂波抑制性能，需增加系统自由度来减少稀疏采样区。最后通过计算机仿真验证了该文提出的估计方法的有效性。
- 雷达;目标检测;杂波自由度;杂波抑制;空时二维自适应处理
Abstract: To investigate the clutter mitigation performance in non-uniform, non-linear, or sparse array radar, the number of Degrees of Freedom (DoF) estimate theory for band-limited signal is employed to estimate the clutter DoF for these array geometries. The proposed method can effectively predict the number of significant clutter eigenvalues, and reveals the relationship between the clutter DoF and the system parameters as well as the clutter scenario. It is found that in sparse array radar, the system DoF should be increased to reduce the sparse sampling section so that the clutter mitigation performance in such systems can be improved. Finally, the effectiveness of the proposed estimate method is verified with simulation.

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参考文献(1)

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