作者单位: | WANG Xu-dong(Information Engineering College, Dalian Maritime Univ. ,Dalian 116026, China)WANG Jing-yu(Information Engineering College, Dalian Maritime Univ. ,Dalian 116026, China)WANG Jing(Information Engineering College, Dalian Maritime Univ. ,Dalian 116026, China)BAO Jun-zhong(Information Engineering College, Dalian Maritime Univ. ,Dalian 116026, China) |