NEW TECHNOLOGY OF DATA TRANSMISSION INSIDE BUOY BETWEEN THE UNDERWATER PROFILER AND THE FOOATING BODY

The anchor mooring profile monitoring bouy is one of the best method to obtain data from under water in recent years. The data transmission between the under water profiler and the floating body. The advanteges of an anchor mooring profile monitoring buoy based are long-term, fixed-point and high vertical resolution vertical profile monitoring data of specific sea area . we use two-point mooring design above of floating body and blew is the anchorage. The underwater profiler can move up and down for acquiring the profiler monitoring data. After obtain monitoring data by profiler transmitted to the foating body. Data will be sended by data a radio station or communication satellite to the on shore data center. For sending data between under water profiler and the floating body, they can be used two kinds of communication: wired or wireless communication. If wired communication is choosen we have some problem because communication distance is variable with the reciprocation so difficult. Wireless communication is better than wired mode, the reason of used is reliability and safety. In all of underwater data transmission mode, acoustic communication is the best because it have high transmission rate, but acoustic communication device is very expensive and high power consumption. The underwater-laser communication is well but the structure is so complex and has high cost.