The DOA Estimation And Correction Of Array Error Based On Compression Sensing Technology

Array signal processing is an important branch of signal processing,and has been widely used in radar,communication and other fields.Array signal processing can make full use of the information in the signal to achieve the purpose of more effectively restrain interference and improve the efficiency of the system.by dealing with the signal in time and space on the same time sampling and processing.The biggest advantage of compression sensing technology comparing with the traditional signal processing sampling theorem is breaking through the limitations of the traditional sampling law.Compression sensing can only use a small number of the signal data containing the main information,to reconstruct a large amount of data through a small amount of data,by constructing the measurement matrix,sparse decomposing of the signal and the original signal reconstruction.This paper mainly studies the DOA Estimation and correction of array error based on compression sensing technology.In this paper,the research of array signal processing based on compression sensing technology are studied firstly.And the main compressive sensing algorithms being used are Orthogonal Matching Pursuit algorithm and L1-SVD algorithm.Then these two methods are analyzed and compared with Beam Forming algorithm and MUSIC algorithm.Then the OMP algorithm and L1-SVD algorithm are used aiming at correcting the array position error,array phase error,array phase error and vector array attitude error,comparing with the traditional array error correction methods.The methods of OMP algorithm and L1-SVD algorithm are used to correct the array position error,comparing with the traditional multi-auxiliary-source method and the multisource method.The methods of OMP algorithm and L1-SVD algorithm are adopted for the amplitude and phase error of the element channel,comparing with the Single-source Correction method.Besides,the OMP algorithm and L1-SVD algorithm are applied to the correction of the phase error of the array element.The OMP algorithm and L1-SVD algorithm deals with the vector array attitude error,comparing with the Active correction Algorithm and Self-correcting Algorithm.At last,the properties of the array error correction methods based on compression sensing technology are obtained.