School of Life Sciences;
Tianjin Polytechnic University;
Tianjin 300387;
China;
Tianjin Key Laboratory of Photoelectric Detection Technology and System;
Tianjin Polytechnic University;
Tianjin 300387;
China;
National Marine Data and Information Service;
Tianjin 300171;
China;
National Ocean Technology Center;
Tianjin 300112;
China;
expandable conductivity temperature depth(XCTD)profiler; time-varying channel modeling; frequency sweeping method; amplitude and phase compensation; transmission performance;