RIASSUNTO
Real-time weather alerts will be very helpful to marine fishermen to avert the dangers from storms. Problems happen when the alerts are issued when the fishermen are already in sea. OceanNet, an affordable communication infrastructure for marine fishermen developed by our research center, will be used for this purpose. Weather stations installed on fishing vessels will perform fine-grained monitoring of the sea weather and alert the fishermen in real-time. The weather station will consist of low-cost sensors to monitor temperature, light, salinity, wind, humidity, etc. Towards this, we plan to develop a low-cost sensor for measuring the temperature of sea surface for better understanding of weather changes. Several techniques are existing to measure the sea surface temperature but most of them are expensive with less accuracy. This paper presents a survey of the available techniques and their comparison. A cost-effective technique based on thermopiles is selected for our prototype based on this survey.