[Xu, Jin-long; Ai, Mei; Xu, JL; Zhu, Ming; Wang, Jie; Yu, Nai-ping; Zhang, Chuan-peng; Zhu, M; Liu, Xiao-lan; Jiang, Peng; Jing, Yingjie] Chinese Acad Sci, Natl Astron Observ, 20A Datun Rd, Beijing, Peoples R China.
[Xu, Jin-long; Ai, Mei; Xu, JL; Zhu, Ming; Yu, Nai-ping; Zhang, Chuan-peng; Zhu, M; Liu, Xiao-lan; Jiang, Peng] Guizhou Univ, Guizhou Radio Astron Observ, Guiyang 550000, Peoples R China.
[Jiao, Qian] Wuhan Polytech Univ, Sch Elect & Elect Engn, Wuhan 430023, Peoples R China.
[Liu, Yao] Qiannan Normal Univ Nationalities, Sch Phys & Elect, Longshan Rd, Tuyun 558000, Peoples R China.
[Liu, Yao] Qiannan Key Lab Radio Astron, Duyun 558000, Guizhou, Peoples R China.