Anovelrotationalinvariancetechniqueforblindestimatesofdirectionofarrival(I)OA)andDopplerfrequencywithunknownarraymanifoldduetoarraysensoruncertaintiesisproposed,takingDopplerfrequencydifferencebetweenasuccessivepulsesasrotationalparameter.Theeffectivenessofthenewmethodisconfirmedbycomputersimulation.Comparedwiththeexisting2-DDOA-frequeucyestimatetechniques,thecomputationloadoftheproposedmethodcanbesavedgreatly.