CAJ | 학술논문

针对多输入多输出( MIMO)雷达阵列稀布导致栅瓣效应的问题，研究了L型阵列方向图综合方法。通过在发射和接收阵列的阵元位置中引入随机扰动，同步优化收发阵列，对MIMO雷达L型阵列等效构造的虚拟矩形平面阵列进行二维方向图综合，并且对遗传算法的变异算子进行改进，提高全局搜索性，从而有效抑制栅瓣，降低二维合成方向图中方位维和俯仰维的峰值旁瓣电平。仿真实验证明了所提算法的有效性。
침대다수입다수출( MIMO)뢰체진렬희포도치책판효응적문제，연구료L형진렬방향도종합방법。통과재발사화접수진렬적진원위치중인입수궤우동，동보우화수발진렬，대MIMO뢰체L형진렬등효구조적허의구형평면진렬진행이유방향도종합，병차대유전산법적변이산자진행개진，제고전국수색성，종이유효억제책판，강저이유합성방향도중방위유화부앙유적봉치방판전평。방진실험증명료소제산법적유효성。
In order to avoid the grating lobe effect in multiple-input multiple-output( MIMO) radar caused by array sparse distribution,a synthesis and optimization algorithm of L-shape sparse array in MIMO radar is proposed. Two-dimensional pattern synthesis is achieved with L-shape sparse array in MIMO radar which is equivalent to virtual rectangular plane array. Both the transmitting and receiving antenna array ge-ometries are optimized through introducing a random perturbed variable,so that the grating lobe can be sup-pressed and two-dimensional pattern synthesis with lower relative sidelobe levels in both azimuth and ele-vation dimensions can also be obtained. In the proposed method,mutation operation in classic genetic algo-rithm is modified to enhance the global search capability. Simulation results indicate the validity of the pro-posed methods.