双基地航空声呐搜潜距离误差估计

ESTIMATION OF RANGE ERROR IN BISTATIC AIRBORNE SONAR SEARCHING FOR SUBMARINES

本文在双基地航空声呐搜潜距离模型的基础上 ,建立了其误差模型、误差系数模型 ,确定了影响其精度的因素为水下声速、直达波时间、反射波时间、方位角等 ,并根据所建立的数学模型 ,仿真分析了离心率和方位角的变化对各误差系数的影响、各误差因素的变化对搜潜距离相对均方误差的影响等 ,获得了有益的结论 。

Based on the range model of bistatic airborne sonar searching for submarines, the range error model and error coefficient model for bistatic airborne sonar searching for submarines were established to confirm the factors (such as underwater sound speed, direct-wave time, reflect-wave time, azimuth angle etc. ) which have influence on distance precision. According to the mathematical models, simulations were made to analyse the eccentricity and azimuth angles’ influence on each error coefficient and the searched submarines' distance relative mean square error. The simulation results show that this method can get satisfactory effect. This paper provides a gist for further research on bistatic airborne sonar searching of submarines.