天线相位中心位置的计算方法

44217220156FireControlＲadarTechnologyVol.44No.2Series172Jun.20152014-10-091982－。。38230031【】。SSDSSD。。TN820.17A1008-8152201502-090-06MethodofCalculatingAntennaPhaseCenterPositionZhangChongyangChenXuNo.38ＲesearchInstituteofCETCHefei230031AbstractAmethodofcalculatingantennaphasecenterpositionispresentedbasedonantennafarfieldamplitudeandphasepatternbywhichtheantennaphasecenterpositioncanbecalculatedfastly.ModelbetweentheantennaphasecenterpositionandfarfieldphasepatternisfirstlysetupandthepartialderivativeoffarfieldphaseSSDonpositondeflectionisthencalculatedtofindtheminimumofphaseSSDandphasedeflectionatthistime.Incourseofcalculatingphasecenterdifferentamplitudeandweightingmethodcanbeselectedaccordingtorequirement.thecalculatingeffectofusingdifferentweightingmethodscanbecomparedviacompensatedphasepatternaftercalcu-lating.Keywordsphasecenterplanenearfieldantennameasurementphasecompensation01。23－45－67。11XZdXdZdYdZ2dV。lZd。θZθθ'=arccosdZdV=arcsindXdV1dXdYdZ。121dEθ=ej·k0·dθdθ2k0θddθ=12+dV2－2·1·dV·cosθ+θ'槡32Eθ=ej·k0·12+dV2－2·1·dV·cosθ+θ'槡12+dV2－2·1·dV·cosθ+θ'槡4dV＜14Eθ=ej·k01－dV·cosθ+θ'15φθφθ=k01－dV·cosθ+θ'616φθ=φ0－k0·dZ·cosθ+k0·dX·sinθ7φ0=k0·1。φiSSDSSD=iφi－φ0－k0·dZ·cosθi－dX·sinθi28SSDdssDddX=diφi－φ0－k0·dZ·cosθi+k0·dX·sinθi2ddX=i2·φi－φ0－k0·dZ·cosθi+k0·dX·sinθi·－k0·sinθ=09dssDddZ=diφi－φ0－k0·dZ·cosθi+k0·dX·sinθi2ddZ=i2·φi－φ0－k0·dZ·cosθi+k0·dX·sinθi·－k0·sinθ=010dssDdφ0=diφi－φ0－k0·dZ·cosθi+k0·dX·sinθi2dφ0=i2·φi－φ0－k0·dZ·cosθi+k0·dX·sinθi·－1=0119211－k0·isinθizk0·isinθi－k0·isinθi·cosθik0·icosθi2－k0·isinθik0·icosθi－isinθi－icosθi－n·dXdZφ0=－iφi·sinθi－iφi·cosθi－iφi1222。2WiSSD=iWi·φi－φ0－k0·dZ·cosθi+k0·dX·sinθi21321944－k0·iWi·sinθizk0·Wi·sinθi·cosθi－k0·iWi·sinθi·cosθik0·iWicosθiz－k0·iWi·sinθik0·iWi·cosθi－iWi·sinθi－iWi·cosθi－iWi·dXdZφ0=－iWi·φi·sinθi－iφi·cosθi－iφi14。φ0=k0·dZ·cosθ+k0·dX·sinθ1534。2X。1－10dB。2X9.6GHz。1XXmmdXdZdY－0.0129－0.1437－0.0042－0.0125－0.2127－0.0002－0.0127－0.23240.00283X34+/－20292+/－20－10dB+/－20。4XC55.4GHz5C42CCmmdXdZdY－0.0060－0.6132－0.0894－0.0084－0.9644－0.1175－0.0084－0.9767－0.11696C39447C2。67+/－20。X。8X9.0GHz43XXmmdXdZdY－0.0035－0.1533－0.0691－0.0099－0.2809－0.0630－0.0042－0.1538－0.00859X49210X±10°±10°±10°。10±10°。4SSDdXdYdZ。。。。1.M.2013.2.J..2012.8135－138.3.J..2005.206725－729.4.J..2008.37538－540.5.J..2003.3191375－1377.6.J..2011.27136－39.7.J..201228528－31.59