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1、萬(wàn)方數(shù)據(jù)第33卷第ll期2012年11月儀器儀表學(xué)報(bào)ChineseJournalofScientificInstrumentVol。33NO.1lNOV.2012機(jī)載相控陣?yán)走_(dá)探測(cè)參數(shù)優(yōu)化廖俊,于雷,周中良,俞利新(空軍工程大學(xué)工程學(xué)院西安710038)木摘要:相控陣?yán)走_(dá)(phasedarrayradar,PAR)可通過(guò)合理配置工作參數(shù)優(yōu)化其性能。針對(duì)機(jī)載相控陣?yán)走_(dá)目標(biāo)探測(cè)過(guò)程中的射頻隱身需求,提出了一種雷達(dá)工作參數(shù)優(yōu)化方法。首先建立了以評(píng)估發(fā)現(xiàn)目標(biāo)能力的檢測(cè)概率和評(píng)估射頻隱身能力的截獲概率為指標(biāo),以脈沖峰值功率和駐留時(shí)間為優(yōu)化參數(shù)的雷達(dá)探測(cè)多目標(biāo)優(yōu)化
2、模型;然后根據(jù)多目標(biāo)優(yōu)化理論,采用改進(jìn)非支配遺傳算法(improvednon—dominatedsortinggeneticalgorithmII,NSGA—II)求解Pareto最優(yōu)解集,并由這些Pareto解構(gòu)成決策矩陣;最后,利用熵權(quán)法對(duì)各個(gè)目標(biāo)進(jìn)行客觀賦權(quán),再運(yùn)用逼近理想解的排序法(techninquefororderpreferencebysimilaritytoanidealsolution,TOPSIS)進(jìn)行多屬性決策(multi—attributedecisionmaking,MADM),得到參數(shù)控制方案。結(jié)合具體實(shí)例進(jìn)行仿真計(jì)算,結(jié)果
3、表明,運(yùn)用多目標(biāo)優(yōu)化理論可以有效地配置雷達(dá)工作參數(shù),優(yōu)化雷達(dá)工作性能。關(guān)鍵詞:相控陣?yán)走_(dá);射頻隱身;檢測(cè)概率;截獲概率;多目標(biāo)優(yōu)化;多屬性決策中圖分類(lèi)號(hào):TN958.92TH76文獻(xiàn)標(biāo)識(shí)碼:A國(guó)家標(biāo)準(zhǔn)學(xué)科分類(lèi)代碼:510.70OptimizingdetectionparametersofairbornePARLiaoJun,YuLei,ZhouZhondiang,YuLixin(Engi船eringCollege,AirForceEngineeritrgUniversity,Xi'an710038,China)Abstract:Theperforman
4、ceofphasedarrayradar(PAR)couldbeoptimizedthroughappropriateconfiguringitsworkingparameters.Aimingattherequirementofradiofrequency(RF)stealthforairbornePARindetectingtar—getprocess,aradarworkingparameteroptimizationmethodisproposed.Firstly,amulti—objectiveoptimizationmodelofradar
5、detectionisestablished,whichtakesthedetectionprobabilityforevaluatingfindingtargetabilityandtheinterceptprobabilityforevaluatingRFstealthastheindexes,andtakesthepulsepeakpoweranddwelltimeastheoptimizationvariables.Secondly,basedonthemulti—objeetiveoptimizationtheory,thePareto—op
6、timalsolutionsetisobtainedusingimprovednon—dominatedsortinggeneticalgorithmII(NSGA—II),fromwhichthedecisionmakingmatrixisconstructed.Finally,entropy—weightmethodisusedtosettheweightsoftheobjects;thetechniquefororderpreferencebysimilaritytoidealsolution(TOPSIS)methodisappliedtope
7、rformthemulti—attributedecisionmaking(MADM);andthebestparametercontrolschemeisobtained.Withapracticalexample,simulationcalculationwascarriedoutbasedonthenovelmethod.Theresultsshowthatwithmulti-ob—jectoptimizationtheory,theproposedmethodcaneffectivelyconfigureradarworkingparamete
8、rsandoptimizera—daroperationperformance.Keyword