摘要
多输入多输出(MIMO)雷达通过分布式布阵可以获得空间分集增益,抑制目标闪烁,但过大的阵元间隔不利于DOA估计。采用发射阵列分布式布阵,接收阵列密布阵的收发分置系统,通过发射正交信号,在接收端经匹配滤波信号分选后构造虚拟子阵,提出了一种子阵优选算法,抑制目标闪烁,实现多目标超分辨。对子阵优选算法在MIMO二维空间定位中进行扩展,使MIMO同时具备抑制目标闪烁和提高自由度的特点。最后仿真实验表明了该算法的有效性。
MIMO radar obtains spatial diversity by distributed sensors, which are difficult for the estimation by DOA. In this paper, the transmit dements are widely separated with the receiving elements closely spaced. By transmitting orthogonal signals, virtual subarrays are designed through filters, and the Subarrays Selection（SAS） algorithm is proposed. The algorithm obtains spatial diversity as well as robust super-resolution direction-of-arrival estimation. The proposed algorithm is extended in 2-D location of MIMO, then it obtains spatial diversity as well as increased freedoms. Finally the simulated results show that the SAS algorithm is effective.
出处
《国防科技大学学报》
EI
CAS
CSCD
北大核心
2009年第3期92-96,共5页
Journal of National University of Defense Technology
基金
国家部委基金资助项目
