简介：InverseSyntheticApertureRadar(ISAR)isanimportantmeansfortargetclassification,recognition,identificationandmanyothermilitaryapplications.AsimulationmodelofISARsystemisestablishedafteranalyzingtheprincipleofISARimaging,andthenseveralECM(ElectronicCounterMeasurement)techniquesarestudied.Simulationexperimentsaredoneonthebasisofsuchresearch.TheexperimentalresultoftheresearchcanbeusedforECMequipment.

简介：Therearemanykindsofspecialrelationshipsbetweenmultiple-valuedlogicalfunc-tionsandtheirvariables,andtheyaredifficulttobejudgedfromtheirexpressions.Inthispaper,somesufficientandnecessaryconditionsoftheindependenceandstatisticalindependenceofmultiple-valuedlogicalfunctionsontheirvariablesaregiven.Someconditionsofalgebraicindependenceofmultiple-valuedlogicalfunctionsonsomeoftheirvariablesandthewaytode-generateafunctiontothegreatestextentareproposed,andsomeapplicationsoftheseresultsareindicated.AlltheresultsarestudiedbyusingChrestensonspectraltechniques.