An operational satellite remote sensing system for ocean fishery

Ocean environmental information is very important to supporting the fishermen in fishing and satellite remote sensing technology can provide it in large scale and in near real-time.Ocean fishery locations are always far away beyond the coverage of the satellite data received by a land-based satellite receiving station.A nice idea is to install the satellite ground station on a fishing boat.When the boat moves to a fishery location,the station can receive the satellite data to cover the fishery areas.One satellite remote sensing system was once installed in a fishing boat and served fishing in the North Pacific fishery areas when the boat stayed there.The system can provide some oceanic environmental charts such as sea surface temperature(SST) and relevant derived products which are in most popular use in fishery industry.The accuracy of SST is the most important and affects the performance of the operational system,which is found to be dissatisfactory.Many factors affect the accuracy of SST an it is difficult to increase the accuracy by SST retrieval algorithms and clouds detection technology.A new technology of temperature error control is developed to detect the abnotmity of satellite-measured SST.The performance of the technology is evaluated to change the temperature bias from -3.04 to 0.05℃ and the root mean square(RMS) from 5.71 to 1.75℃.It is suitable for employing in an operational satellite-measured SST system and improves the performance of the system in fishery applications.The system has been running for 3 a and proved to be very useful in fishing.It can help to locate the candidates of the fishery areas and monitor the typhoon which is very dangerous to the safety of fishing boats.