为了充分利用统计多输入多输出(MIMO)雷达的空间分集能力,研究了长基线(天线间距与目标探测距离可比拟)统计MIMO雷达的检测方法和性能。首先,根据雷达方程给出了长基线统计MIMO雷达探测目标时各信道的信号模型;然后,根据Neyman-Pearson准则推导了长基线统计MIMO雷达的似然比检测器;最后,从检测概率和威力覆盖两个方面对长基线统计MIMO雷达的检测性能进行了仿真分析。仿真结果表明:在一定条件下长基线统计MIMO雷达的检测性能优于短基线(天线间距与目标探测距离相比可忽略不计)统计MIMO雷达。研究结果对统计MIMO雷达的系统设计、天线布置和实际应用等研究具有重要的参考价值。

In order to make full use of the spatial diversity of statistic multiple-input multiple-output (MIMO) radar, the detection method and performance of long baseline (antenna spacing and target detection range is comparable) statistic MIMO radar are studied. Firstly, the channel signal model of long baseline statistic MIMO radar is given according to the radar equation. Then the likelihood ratio test detector of long baseline statistic MIMO radar is derived according to Neyman-Pearson criterion. Finally, the detection performance of long baseline statistic MIMO radar is analyzed by the simulation of detection probability and coverage. The simulation results show that the detection performance of long baseline statistic MIMO radar is better than that of short baseline (the distance between the antenna is negligible when compared to target detection range) statistic MIMO radar. The research results have important reference value for the research of the system design, antenna placement and practical application of the statistic MIMO radar.

TN957. 5

国家自然科学基金资助项目(61401504);中国博士后科学基金资助项目(2014M562562)