【摘要】 根据飞行器的雷达散射截面(RCS)分布,合理确定飞行器隐身外形优化设计中的目标函数。首先,对3种目标函数(即威胁区域内RCS的平均值、大于临界RCS值的概率和被雷达检测的平均概率)的特点进行了分析和总结。然后,以一个典型飞行器隐身外形优化问题为例,分析不同目标函数对隐身外形优化结果的影响。计算结果表明:采用不同的目标函数会得出不同的优化外形,并在此基础上探讨了3种目标函数的相关性与区别。最后,总结出在隐身优化设计中如何合理确定目标函数的原则。更多还原

【Abstract】 A rational way is presented to determine the objective function in the low detectable design using radar cross section(RCS) distribution information of the aircraft.Three different objective functions,i.e.the average RCS in the sector of radar threat,the probability larger than the critical RCS and radar average detected probability,are analyzed.The low detectable design problem of a generic unmanned combat air vehicle(UCAV) is used for investigating the effect of different objective functions on optimal results in low detectable design.The results indicate that the different objective functions result in the different optimal shapes of the UCAV.The similarities and differences among the three objective functions are discussed based on the optimization results.The guidance for the selection of the objective function in low detectable design is summarized.更多还原