An adaptive distance correction localization algorithm based on RSSI for WSNs

Abstract

In order to suppress effectively the effects of environmental factors on location precision, Gaussian model was used to get the final measured Received Signal Strength Indication (RSSI). Based on improved the trilateration localization algorithm and the distance difference correction localization algorithm, the direction correction factor and distance threshold are defined, and a new adaptive distance correction localization algorithm are proposed. The experimental results showed that this algorithm could well improve the location precision, whose location error was less than 5.93%. Besides, this algorithm needn't additional hardware spending, so it is quite practical for locating in most applications. © 2012 Springer-Verlag GmbH.