分布式OFDM-MIMO雷达非相参积累目标检测方法

针对目标雷达截面积(radar cross section, RCS)空间起伏,不易于常规雷达进行长时间积累检测的问题,结合正交频分复用(orthogonal frequency division multiplexing, OFDM)波形与分布式多输入多输出(multiple input multiple output, MIMO)雷达的特点,提出了一种基于分布式OFDM MIMO雷达的非相参积累目标检测方法。该方法使获得的多路回波信号短时间内非相参并行处理,削弱了长时间积累、复杂的相位补偿以及RCS快起伏对检测性能的影响,有效实现了多个目标的积累和检测。仿真结果证实了提出方法的有效性。

Incoherent integration detection using distributed OFDM MIMO radar

t is difficult for the traditional radar to detect targets with radar cross section (RCS) fluctuation via the long time coherent integration. Combining the characteristics of multiple input multiple output (MIMO) radar and orthogonal frequency division multiplexing (OFDM) waveform, an incoherent integration detection method is proposed using distributed OFDM MIMO radar. The parallel incoherent processing of the multi channel echo in a short time is exploited to weaken the effect caused by the long time integration, the complex phase compensation and the fast 〖JP+1〗RCS fluctuation. Then, the multi target integration and detection are realized effectively. Simulation results verify the superiority of the detection method using the distributed OFDM MIMO radar.