Localization in Wireless Sensor Grids

TL;DR

This paper presents a practical and efficient radio-based localization method for wireless sensor grids using RSSI, fuzzy logic, and table lookup, achieving 86% accuracy despite high measurement errors.

Contribution

It introduces novel techniques like fuzzy membership functions and table lookup to improve localization accuracy and simplify computation in sensor networks.

Findings

Achieved 86% localization accuracy in experiments

Fuzzy membership functions improve distance estimation

Method remains effective despite 60% RSSI errors

Abstract

This work reports experiences on using radio ranging to position sensors in a grid topology. The implementation is simple, efficient, and could be practically distributed. The paper describes an implementation and experimental result based on RSSI distance estimation. Novel techniques such as fuzzy membership functions and table lookup are used to obtain more accurate result and simplify the computation. An 86% accuracy is achieved in the experiment in spite of inaccurate RSSI distance estimates with errors up to 60%.