Effect ofElement Pattern onDirectivity oftheHenisphenrcal Array

arrays. Besides, hemispherical afrays havea Inmanycommunication scenarios, suchasin relatively stable performance versusminimal GPS communications andintegrated navigationelement spacing. Inthis paper, theeffect ofelement systems, signals withwidespace distributions need pattern onarray scanning performance isexplored, tobe processed simultaneously orpromptly.andthereby itisfound that thescanning directivity Hemispherical arrays havegreater capability in variation isnotamonotonic function ofindividual receiving andprocessing signal thanplanar arrays,element beamwidth. Theattached simulation data andcanprovide robust performance. Inpreviousandfigures well illustrate that. research 1,thedirectivity ofahemispherical array is Thepaper isorganized asfollows. Insection II, compared withseveral kinds ofplanar arrays, that thearray geometry isre-introduced. Section III showsthiskindofarray hasessentially betterpresents simulation examples anddiscussions for scanning performance. Inthis paper, theeffect of different element patterns. Section IVsummarizes element pattern on thehemispherical array'sthepaper. scanning directivity isstudied, andthemainfactors whichaffect theparameters ofdirectivity are