Research on optimization model based on RSSI ranging and trilateration method

摘要

The ranging technique based on Received Signal Strength Indicator (RSSI) is often used in localization of Wireless Sensor Networks (WSNs). Meanwhile, many research efforts have been made to devise efficient range-based outdoor localization techniques. In this paper, we use RSSI algorithm to range the distance between the nodes and target node. Then, a dynamic optimization model has been proposed to reduce the ranging error for increasing the ranging precise. Finally, we calculate the target node coordinates using trilateration algorithm. The experiments on actual outdoor environments show that the proposed scheme provides a higher accuracy as common location and the outdoor navigation service using the proposed scheme works properly.