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提出可在稀疏角域以及多普勒域下对天线阵列信号向量进行接收和分析的方法,讨论在多普勒频域范围内的DOA估计问题,并在有效的频带范围内提取信号冲激响应较大的值.在稀疏DOA的恢复过程中采用的是L2,0估计算法,并在多路天线频谱感知的架构下充分利用DOA所固有的稀疏特性,对其进行稀疏恢复.对于在测试环境中不可避免的噪声问题,分析三种不同噪声分布下的DOA估计误差问题.仿真结果显示频域范围内的L2,0-DOA估计算法具有较低的计算复杂度和较高的准确度,并且算法对噪声不敏感,鲁棒性较高.
The method of receiving and analyzing the signal vector of antenna array in sparse angular domain and Doppler domain is proposed. The DOA estimation problem in the Doppler frequency domain is discussed and the signal impulse response is extracted in the effective frequency range Larger value. In sparse DOA recovery process using L2,0 estimation algorithm, and in the multi-channel antenna-aware architecture to take full advantage of the inherent sparseness of DOA sparse recovery.For the test environment , The problem of DOA estimation error under three different noise distributions is analyzed.The simulation results show that L2,0-DOA estimation algorithm in the frequency domain has lower computational complexity and higher accuracy, and The algorithm is insensitive to noise and has high robustness.