大连理工大学学报
大連理工大學學報
대련리공대학학보
JOURNAL OF DALIAN UNIVERSITY OF TECHNOLOGY
2013年
3期
390-396
,共7页
舰船桅杆%雷达散射截面%隐身%优化%遗传算法
艦船桅桿%雷達散射截麵%隱身%優化%遺傳算法
함선외간%뢰체산사절면%은신%우화%유전산법
warship mast%radar cross section%stealth%optimization%genetic algorithm
桅杆作为重要的雷达反射源,直接影响到舰船的整体隐身性能,对其进行外形雷达隐身优化非常有意义。在特定的雷达探测条件下,以某封闭式八边形桅杆为例,利用自适应遗传算法,分别以威胁区域内的雷达散射截面(RCS)最大值、平均值,被监测平均概率以及大于RCS临界值的概率4种评价指标为目标函数进行桅杆形状的特征参数优化,并对不同指标的优化结果进行对比分析。优化后桅杆的隐身性能均有明显提升,4种优化结果所对应的RCS面积分布具有一定的相似性,同时结果也表明针对特征角度的RCS优化是无效的。
桅桿作為重要的雷達反射源,直接影響到艦船的整體隱身性能,對其進行外形雷達隱身優化非常有意義。在特定的雷達探測條件下,以某封閉式八邊形桅桿為例,利用自適應遺傳算法,分彆以威脅區域內的雷達散射截麵(RCS)最大值、平均值,被鑑測平均概率以及大于RCS臨界值的概率4種評價指標為目標函數進行桅桿形狀的特徵參數優化,併對不同指標的優化結果進行對比分析。優化後桅桿的隱身性能均有明顯提升,4種優化結果所對應的RCS麵積分佈具有一定的相似性,同時結果也錶明針對特徵角度的RCS優化是無效的。
외간작위중요적뢰체반사원,직접영향도함선적정체은신성능,대기진행외형뢰체은신우화비상유의의。재특정적뢰체탐측조건하,이모봉폐식팔변형외간위례,이용자괄응유전산법,분별이위협구역내적뢰체산사절면(RCS)최대치、평균치,피감측평균개솔이급대우RCS림계치적개솔4충평개지표위목표함수진행외간형상적특정삼수우화,병대불동지표적우화결과진행대비분석。우화후외간적은신성능균유명현제승,4충우화결과소대응적RCS면적분포구유일정적상사성,동시결과야표명침대특정각도적RCS우화시무효적。
As an important source of radar reflection ,mast will directly affect the stealth performance of overall warship ,so stealth shape optimized design aiming at mast is very significant .Based on the typical radar detection conditions ,an octagon closed-wide mast is taken as the stealth design model . Using the adaptive genetic algorithm ,the mast is optimized with the objective functions which are respectively made by four existing criteria ,including the maximum and average radar cross section (RCS) within the threat area ,the average probability of radar detection and the probability greater than the critical RCS ,and the comparative analyses of optimal mast design in every criterion are put forward .Every optimal mast design in every criterion has a better radar stealth performance ,and the RCS distribution of each optimal design has a certain similarity .The experimental results also indicate that the optimization of the RCS of characteristic angle of mast is invalid .