School of Data Science;
Tongren University;
Tongren;
554300;
China;
Laboratory of Aerocraft Tracking Telemetering Command and Communication;
Chongqing University;
Chongqing;
400044;
China;
Department of Mechanical Engineering;
Stanford University;
Stanford;
94305;
USA;
Multiple sub-arrays; DOA estimation; difference co-array; hole-repair;