The distributed aperture array achieves effectiveness of the traditional large aperture radar,avoiding the drawbacks of the traditional large aperture radar,however,it brings new problems because of its structure.There are synchronous errors among different aperture units and the amplitude-phase imbalance of a multi-channel radar receiv-ers.These errors lead to beam direction changes,high slide lobe,and antenna gain loss and other issues,which re-sults in the performance degradation of the distributed aperture array.To realize the full coherent distributed system,it's necessary for all of the radar units working in synchronization for time,space and phase.In this paper,the meth-od of synchronization among array units and inner correction was adopted to realize the synchronization of the distribu-ted aperture array,and it was effective in engineering application.
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