全向甚高频雷达抗干扰及方位角估计算法c tian1 s l wen1送检.pdf

ANANTI-JAMMINGANDAZIMUTHANGLE

ESTIMATIONALGORITHMFOROMNI-DIRECTIONAL

VHFRADAR

11

C.Tian,S.L.Wen

1BeijingInstituteofRadioMeasurement,Beijing,

qctchao87@126.com,wensl@

Keywords:Omni-directionalVHFradar,Circulararray,formingandblockpreconditioningalgorithms[5-7]are

Anti-jamming,Azimuthangleestimation,Phasemode.hardtobeusedduetothemutualcouplingeffect.

Bycontrast,theblindsourceseparationalgorithm[8]can

effectivelyrealizetheseparationofinterferenceandtar-

get’secho,buttarget’sangleinformationwillnotbe

Foromni-directionalVHFradar,animprovedanti-availablewhichisallincludedintheseparationmatrix.

jammingandangleestimationalgorithmisproposedtoSomescholarsalsoadvisedtotakefulluseofthepolariza-

decreasethecancellationlossoftarget’sechoduetothetiondifferencweeninterferenceandtarget’sechofor

smallazimuthangledifferencweenthejammingandanti-jamming.Adaptivepolarizationfilterproposedby

targetandincreasetheestimationprecisionoftarget’sNathanson[9]isagoodchoiceforomni-directionalVHF

azimuthangle.Intheproposedmethod,twocircularar-indeed,buttheproblemisthatthecancellation