Localization (Positioning) system for small scale fishery boats in Sri Lanka

Showers or thundershowers and winds will occur at sea areas in Sri Lanka. Hence, small scale fishery boats are facing significant distress situations on the sea and estimating the boat position accurately will be able to manage the distress of boats from the central management system. Determining the position of a target boat is one of the most important technical challenge in the navigation system. The underwater wireless sensor network will play a massive role for that and it is needed to use an accurate positing (localization) method to estimate the position of the boat. Secondary data were used for evaluate trends of localization method using a Literature review (existing body of work) and Virtual Instrumentation has been used for realize the accurate position of the boat. Considering the underwater challenges, the TDOA localization technique is the most suitable technique for underwater localization. Thus, it has evaluated the Iterative (Taylor) and Closed-form method (Chan method/TSWLS) for the Time Difference of Arrival. The CRLB has been used to take the best result of the unbiased estimator to find the target position (boat). Hence, this proposed system will help to the development of SSF industry as the impact of the technology.