基于亮点模型的潜艇目标回声过渡特性分析

研究潜艇目标回声的近、远场过渡特性对于主动声纳探潜、探测和水声对抗具有实际意义。计算目标回声强度随距离变化曲线是分析目标回声近、远场过渡特性的一种有效方法。理论分析和试验研究均表明,在鱼雷自导频率下,目标回波可近似看成是目标亮点回波相干叠加的结果。该文提出了一种基于亮点模型的潜艇目标回声过渡特性分析方法,通过亮点模型计算不同距离情况下的潜艇目标的回声强度值,进而分析潜艇目标回声的近、远场过渡特性,并与板块元算法计算回声强度值分析潜艇目标过渡特性进行了对比。仿真结果表明,该方法简单,高效。

Analysis on Transition Characteristics of Echoes from Submarine Based on Highlight Model

Transition characteristics of echoes from submarine are essential in studying submarine detection and acoustic countermeasure.Calculating echo strength from an underwater target versus distance is an effective method for analyz-ing transition characteristics of echoes from underwater targets.Theoretical analyses and experiments have shown that under high frequency,echo from any complex target can be considered a coherent superposition of waves from high-lights.A novel algorithm is presented in this paper based on a highlight model to calculate the submarine echo strength in different distance,and to analyze the transition characteristics of echoes from a submarine.Simulation results show that the proposed method is simpler and more efficient compared with the planar element method.