深水域入水点复合声学测量性能分析

Performance Analysis of Composite Acoustic Measurement of Water Entry Point in Deep Water

针对飞行器在海上入水点测量的难题,充分考虑深海环境下测量设备运用的性能特点,提出深水域入水点复合声学测量的方法,并基于方位交会与时差交会定位模型,对测量性能进行建模与仿真。通过分析不同声呐设备测量能力与布设方案,对覆盖能力和测量精度进行比较,结果表明,按照假想模型进行仿真,采用两条船水平和垂直方向距离约30km和40km拖曳线列阵声呐条件下,测量精度为900m~1200m;采用水听器阵潜标以8km边长进行三角形布阵,达到500m精度的区域约80%~85%,达到1000m精度的区域可达95%以上。

In view of the difficult problem of measuring the water entry point of arcraft at sea,fully considering the perfor⁃mance characteristics of measuring equipment in deep-sea environment,a method of compound acoustic mesaurement of water entry point in deep water is proposed,and the measurement performance is modeled and simulated based on azimuth rendezvous and TDOA rendezvous positioning model.By analyzing the measurement capability and layout scheme of different sonar equipment,the coverage capability and layout scheme of different sonar equipment,the coverage capability and measurement accuracy are com⁃pared.The results show that if simulate according to the hypothetical model,the measurement accuracy is 900m~1200m under the condition of towed linear array sonar with horizontal and ertical distance of 30km and 40km from two ships;80%~85%of 500m accu⁃racy area is achieved by triangle array with 8km side length of hydrophone array.The accuracy of 1000m can reach more than 95%.