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现代武装直升机的超低空飞行，使得雷达系统已经无能为力，因此通过直升机的飞行噪声对其进行识别和定位具有重要意义。该文利用平面正四边形阵列对直升机目标进行定位，讨论了定位系统的原理及其算法，并对定位精度进行了分析。结果表明，单个阵列可以对空间目标进行定向。对于低飞的直升机目标来说，定向误差小于１°，但定距方差较大。该文提出的多子阵方法进行三维定位，使定距精度有较大提高
The low-altitude flight of modern helicopter gunships makes the radar systems incapable of action. Therefore, it is of great significance to identify and locate the helicopters through the flight noise of helicopters. In this paper, a planar quadrilateral array is used to locate the helicopter target. The principle and algorithm of the positioning system are discussed, and the positioning accuracy is analyzed. The results show that a single array can target space objects. For low-flying helicopter targets, the directional error is less than 1 °, but the distance variability is greater. The multi-subarray method proposed in this paper can make the three-dimensional positioning more accurate