Localization of submerged sensors using radio and acoustic signals with single beacon
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This paper proposes a simple mechanism to accurately determine the distance between nodes using radio and acoustic signals in underwater wireless sensor networks (UWSN). It also delineates a new method of determining the coordinates of sensors with a single beacon. As the knowledge of precise coordinates of the sensors is as important as the collected data in UWSN, the accurate distance measurement between the nodes is the prime factor for better accuracy. Mostly, in range free method, received signal strength indicator (RSSI) is used to determine the propagation loss from which the inter nodes distances are calculated. However, in underwater, RSSI of acoustic signal is heavily affected by multipath fading that eventually leads to erroneous coordinates. The proposed mathematical model of coordinate-determination has better immunity from multipath fading as well as synchronization in distance determination resulting precise location of the sensors. Moreover, a single beacon is used to determine the coordinates of the sensor nodes where none of them has a priori knowledge about its location.
Ad-hoc, mobile, and wireless network : 12th International Conference, ADHOC-NOW 2013
Information and Computing Sciences not elsewhere classified