Linear Coprime Sensor Location Arrays:Array Calibration and Beamforming
Focusing on investigating the problems of array calibration and beamforming for Coprime Location Arrays(CLA),a new beamforming algorithm,which is called CLA-SILAC-INCM algorithm is proposed for the partly calibrated CLAs,by exploiting the Simultaneous Interference Localization and Array Calibration(SILAC)technique.Theoretical analysis shows that when the CLA contains not less than 3 fully calibrated antenna elements,highly accurate and unambiguous estimation for interference direction and array gain-phase error vector can be obtained using the SILAC technique.Afterward,the Interference plus Noise Covariance Matrix(INCM)is reconstructed and the optimal beamforming weighting vector is computed.Simulation results show that the proposed CLA-SILAC-INCM algorithm exhibits better performance compared with existing algorithms,especially when the signal-to-noise ratio is close to interference-to-noise ratio.
万方数据
维普
