Parameter matching is a key issue in 2-D ESPRIT algorithm. In order to improve the accuracy of parameter matching,a new parameter matching method by sorting the argument of parameters is proposed according to the joint diagonalization principle. This method shows good effect in 2-D direction of arrival estimation. Especially when the SNR is low,the accuracy is improved obviously as compared with the existing matching method. The simulation results based on L- shaped array prove the performance of this metho...