After the automation of ocean hydrological and meteorological data collection, the problem faced is how to transmit dispersed collected data in real-time to a central data server for further processing and analysis.
According to the requirements, it is necessary to transmit the front-end video images in real-time to the monitoring center to complete the high-definition video transmission. The wireless link is the key in the system, considering the marine environment, dispersed sites, and high bandwidth requirements. Therefore, the system needs to consider the following issues: 01. Low power consumption principle: Most monitoring points such as floating platforms are powered by solar systems, and the transmission equipment is required to be low-power devices; 02. Robustness principle: If the equipment is exposed to harsh environments such as strong offshore wind, high air humidity, and high salinity for a long time, the equipment needs a higher level of protection; 03. Stability principle: Each monitoring point is left unattended for a long time, and the equipment needs to be in a maintenance free and stable working state. 04. Installation convenience principle: The equipment is easy to install and has an intuitive judgment of the equipment's working status and link communication status; 05. Security principle: Part of the data collected by the device has a certain degree of confidentiality, and the security of the transmission network is more important; 06. Scalability: The device needs to have scalability to provide some redundancy for future expansion. The solution is to install multiple sets of base station equipment on land, covering different sea areas. The fixed detection stations in each sea area transmit the data on the detection stations to the land center base station based on the principle of proximity; For temporary movable detection stations, in the principle of proximity, those that can be connected to land central stations can be connected to land central stations. For those that cannot be connected to land, they can be connected to fixed detection stations nearby; For monitoring vessels, as they move away from the coastline, a land center base station can automatically switch to a fixed detection station, or they can navigate between multiple fixed monitoring vessels as the vessel navigates.