多冲击声源定位算法

为了解决导弹、空投鱼雷等各种类型物体入水点精确定位问题,针对多个冲击声源产生的复杂抵达序列,提出先排序组合定位,再对最小方差项排序,然后用组合关联模型选取最优解组合的算法,实现对多个冲击声源目标的精确定位.误差分析给出了阵位误差和测时误差对定位精度的影响.仿真测试了13枚弹头在130m×30ｍ区域内、1s时间内均匀分布的冲击定位情况,13点定位误差与阵位预置误差基本相当,并且,冲击区域在阵中心时的定位精度高于冲击区域在阵边缘时的定位精度.港内试验验证了该算法能够有效地对多个点进行解算定位,其定位精度在5m以内.

Positioning algorithm for multi-impact sound sources

In order to solve the problem about accurate positioning for the dropping areas of objects such as missiles and airborne torpedoes, a new model is proposed aiming at the complex arrived-in sequence generated by multi-impact sound sources. It first sorts sequence combination and carries on integrated positioning, then sorts the minimum variance item. Finally, the rational model is used to select the optimal solution. The algorithm achieves accurate positioning of multi-impact sound source targets. Based on engineering practices, the error analysis is performed, and the influences of array position error and time error on positioning error are analyzed. The uniformly deployed impact positioning for 13 warheads is simulated in 130m*30m area within 1 second. The errors of 13 targets are equivalently to the errors of the preset array position, and the positioning accuracy in the middle of the array is higher than that at the edge. Simulation and sea trial are both carried out. Tests in the harbor verify that the algorithm can effectively realize the solving orientation of multi-dots, and the positioning accuracy achieves less than 5 meters.