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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 ability of statistical multiple input multiple output (MIMO) radar, the detection method and performance of long baseline (antenna spacing and target detection distance) statistical MIMO radar are studied. First, the signal model of each channel in long baseline statistical MIMO radar detection is given according to the radar equation. Then, the likelihood ratio detector of long baseline statistical MIMO radar is deduced according to the Neyman-Pearson criterion. Finally, from the detection probability and power Covering two aspects of the long baseline statistical MIMO radar detection performance simulation analysis. Simulation results show that under certain conditions, the performance of the long baseline statistical MIMO radar is better than that of the short baseline (the antenna spacing is negligible compared to the target detection range). The research results have important reference value for the research of system design, antenna layout and practical application of statistical MIMO radar.