Abstract:
The Underwater Acoustic Sensor Network (UASN) is a network which consists of underwater wireless sensor nodes distributed randomly over the certain area of observation and communicate with each other using acoustic signals. UASN can be used in a wide variety of underwater applications, ranging from marine biology surveillance to earthquake and tsunami alert applications. Despite the fact that sensor networks are meant to collect data, in some applications, collection of data without a location of the occurrence becomes incoherent. Hence, localization for UASN has become an enthralling research topic in the recent years. However, there are several obstacles coming from the acoustic channel like propagation delay, limited energy sources, high bit error rate, and limited underwater harvesting techniques making the localization of UASN quite challenging. Therefore, in this poster we are proposing a distributed localization scheme which employs two-way time of arrival estimation method to calculate distance and avoid the requirement of time synchronization.
