Frequency signal control based on the characteristic of the phase difference group
JIA Zhaomin;LI Zhiqi;YANG Xuhai;SUN Baoqi;MIAO Miao;DONG Shaofeng
Journal of Xidian University . 2017, (5): 109 -113 .  DOI: 10.3969/j.issn.1001-2400.2017.05.019