一种新的声纳作用距离指标评估方法

A new approach to prediction of sonar detection range index

传统的声纳作用距离指标评估方法,很少考虑"背景海洋环境"参数差异性影响,按照确知理想情况对声纳性能进行评估,影响声纳作用距离指标制定的合理性和有效性。借鉴环境不确定性条件下声场分析的处理思路,在对声纳作用距离指标的评估中考虑声速剖面分布、海深以及海底地声参数、目标深度等方面环境参数的小范围变化,给出一种新的声纳作用距离指标衡量方法。采用Monte Carlo方法来进行数值模拟计算,具体分析几种环境参数变化的影响。由于从实际的角度考虑环境参数的小尺度变化影响,所提出衡量作用距离的方法更具有合理性。

Traditional methods consider little about the effect that arises from the different ocean environmental parameters and predict the sonar performance in a deterministic environment. Sonar detection performance prediction methods that fail to consider environmental uncertainty cannot capture the performance degradation, which causes overestimation of detection performance. An estimation approach that incorporates the effects of environmental uncertainty, such as sound speed profile, sea depth, bottom parameters and source depth into the sonar performance index prediction is proposed in this paper, and the sonar performance index prediction has been implemented by using Monter Carlo simulation. It has been seen that the new approach is more accurate and of practical interest.