机载双基地MIMO雷达对隐身目标的探测范围

Detection Coverage Range of Airborne Bistatic MIMO Radar to Stealthy Targets

针对隐身目标探测问题,引入双基地MIMO雷达,利用其雷达方程得出的探测不等式,对雷达探测隐身目标范围进行了研究。以F-117A为典型隐身目标,利用网格剖分法对预警区域进行划分,通过计算出目标在不同位置的双基地雷达散射截面积,得出双基地MIMO雷达对目标的探测区域。经实验获得了双基地MIMO雷达的探测范围与基线长度、发射天线阵列数及相参积累个数之间的关系。实验结果表明,在对隐身目标的探测范围上,与常规双基地雷达相比,双基地MIMO雷达有着明显的优势。

To solve the problem of the stealthy object detectionthe judging inequality of radar detection based on the bistatic MIMO radar equation was utilized to make a research on the radars detection coverage to stealthy object.Taking the F117A fighter as a typical stealthy objectthe detection area was divided by the grid splitting algorithm.By calculating the bistatic radar across section of the stealthy object at each pointthe object detection coverage for bistatic MIMO radar could be obtained.The relationship among the detection coveragethe baseline lengththe number of the transmitting antenna and phase coherent accumulation was determined by experiment.The experimental result shows that the bistatic MIMO radar is superior to the conventional bistatic radar on detection range to stealthy target.