this paper puts forward an array of five-element cross array algorithm which based on time difference technology, aim at location system for passive acoustic array algorithms in four-element cross positioning accuracy affected by the target azimuth. Studied geometric relationship and parameter calculation among elements of five-element cross array. Using spherical coordinates and least-squares method to locate the target calculation is derived, analyzed the system error. Experimental results show that algorithm improves the burst point of the distance and direction-finding accuracy and improves the target azimuth position of the projectile burst point accuracy. The error of distance and azimuth and elevation what Five -element cross array algorithm have measured were 1. 33m, 0. 0003° and 0. 44° compared with four- element cross array algorithm.%针对四元十字阵被动声定位算法存在定位精度受目标方位角影响的问题,提出基于时间差技术的五元十字阵算法；研究了五元十字阵阵元间的几何关系与参数的计算,利用球面坐标法及最小二乘法推导了目标定位计算式,进行了系统误差分析;实验结果表明,该算法提高了炸点的测距与测向精度,改善了目标方位角对弹丸炸点的定位精度的影响;与四元十字阵算法相比,五元十字阵算法在距离、方位角和俯仰角的误差分别是1.33m、0.0003°和0.44°.
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