舰船电子工程
艦船電子工程
함선전자공정
SHIP ELECTRONIC ENGINEERING
2011年
11期
153-155
,共3页
朱利超%魏鹏举%高杰%唐双喜%刘国平
硃利超%魏鵬舉%高傑%唐雙喜%劉國平
주리초%위붕거%고걸%당쌍희%류국평
尺度目标%亮点模型%板块元%亮点分布
呎度目標%亮點模型%闆塊元%亮點分佈
척도목표%량점모형%판괴원%량점분포
scaling targets%highlight model%planar element%highlight distritbution
水下尺度目标回声特性是水声学中的一个重要研究方向。该文首先介绍了尺度目标近程回波的多亮点模型,采用板块元算法计算亮点的目标强度,同时结合面元的反射强度值和照射区域计算亮点位置,最后以一段圆柱体目标和一个简单形状的组合体目标为研究对象,进行了计算机仿真。仿真结果较好地体现了目标的回波结构,表明采用亮点模型模拟目标回波对于分析水下尺度目标的声学特性具有一定的应用价值。
水下呎度目標迴聲特性是水聲學中的一箇重要研究方嚮。該文首先介紹瞭呎度目標近程迴波的多亮點模型,採用闆塊元算法計算亮點的目標彊度,同時結閤麵元的反射彊度值和照射區域計算亮點位置,最後以一段圓柱體目標和一箇簡單形狀的組閤體目標為研究對象,進行瞭計算機倣真。倣真結果較好地體現瞭目標的迴波結構,錶明採用亮點模型模擬目標迴波對于分析水下呎度目標的聲學特性具有一定的應用價值。
수하척도목표회성특성시수성학중적일개중요연구방향。해문수선개소료척도목표근정회파적다량점모형,채용판괴원산법계산량점적목표강도,동시결합면원적반사강도치화조사구역계산량점위치,최후이일단원주체목표화일개간단형상적조합체목표위연구대상,진행료계산궤방진。방진결과교호지체현료목표적회파결구,표명채용량점모형모의목표회파대우분석수하척도목표적성학특성구유일정적응용개치。
The echoes characteristics of underwater scaling targets in short range is an important research branches of acoustic subject.Firstly,the echoes highlight model of underwater targets is introduced.Secondly,the planar element method is used to calculate the highlight strength.Meanwhile,the highlight distribution is determined based on the reflection coefficient of planar element and the reflection area.In the end an infinite cylinder model and a simple submarine model are taken as the example.Numerical calculation is presented,and the results show that the method can well embody the echoes structure of underwater targets.It also show that the simulated echoes of underwater scaling targets based on highlight model can be applied in analyzing the acoustic characteristics of underwater scaling targets.