Aiming at the problem that the Direct Position Determination(DPD)method based on coprime array has low utiliza-tion rate for discontinuous parts of virtual array elements,this paper proposes a DPD method based on virtual array hole interpola-tion.In this method,the coprime array is used to establish the signal receiving model,and the idea of virtual array hole interpolation is introduced to construct the corresponding covariance matrix.Finally,the spatial spectrum technology is used to solve the position-ing results.Simulation results show that compared with the DPD method based on the maximum continuous virtual array,this meth-od improves the resolution and positioning accuracy in the environment of less snapshots and low signal-to-noise ratio,and has good robustness.
关键词
直接定位/互质阵列/阵列插值/协方差矩阵
Key words
direct position determination(DPD)/coprime array/array interpolation/covariance matrix
维普
万方数据