均匀圆阵模式空间下的宽带信号DOA估计

In order to estimate the direction of arrival (DOA) of wideband sources, a new algorithm is proposed based on phase mode excitation of the uniform circular array(UCA) and TCT focusing technique. In the proposed method, data got from UCA is first transferred into phase-mode space where the ULA manifold structure can be utilized. Then TCT focusing technique is used to eliminate the manifold’s dependence on frequencies of wideband sources, and DOAs of wideband sources can be estimated from focused data model by conventional DOA method finally. The simulation results indicate the efficacy of the proposed method.