College of Electronic Information Engineering;
Nanjing University of Aeronautics and Astronautics;
Nanjing 211106;
China;
Key Laboratory of Dynamic Cognitive System of Electromagnetic Spectrum Space(Nanjing University of Aeronautics and Astronautics);
Ministry of Industry and Information Technology;
Nanjing 211106;
China;
The 28th Research Institute of China Electronics Technology Group Corporation;
Nanjing 210007;
China;
direction of arrival estimation; generalized parallel coprime array; degrees of freedom; array aperture; coprime factors;