Joint Estimation of DO A and Polarization Information Based on Hybrid Arrays
In order to solve the problem of mismatch caused by the diversity of array elements and the placement of array in three dimensions,a hybrid three-dimensional polarization sensitive array direction finding model is proposed for a hybrid three-dimensional array composed of linear polarization,left-right spin polarization and elliptical polariza-tion array.Considering that each array may have different orientation and polarization sensitivity,the polarization sensi-tivity matrix is used to express the polarization sensitivity of arbitrary polarization array elements in each array local co-ordinate system,and then the coordinate rotational matrix is used to transform it into global coordinate system,so a uni-form expression model of array polarization sensitivity is established and an rank-deficit polarization multiple signal clas-sification(MUSIC)algorithm based on this model is proposed.Under the condition of anti-bait,the angular resolution and the angular accuracy of the MUSIC algorithm for uniform and non-uniform hybrid polarization array and other arrays are simulated,and the selection principles for scalar array and vector array are presented.Simulation results show that the hybrid polarized array can improve the resolution and stability of angle measurement effectively under the same ac-curacy,and the non-uniform hybrid polarized array has great potential for decoy application.
polarization sensitive arrayunified model of hybrid arrayrank-deficit polarization MUSIC algo-rithmangular resolutionanti-bait
万方数据
维普
