Publication:
Trilateration method analysis on localised tracking for a target

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Date
2009-03-01
Authors
Tang, Chok Kim
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Abstract
Existing researches on location tracking focus either entirely on indoor or entirely on outdoor by using different techniques. This project aims to implement trilateration method for object tracking both indoor and outdoor by using three wireless data transceivers as reference nodes and a spectrum analyzer as target. RSSI (Received Signal Strength Indication) technique together with enhancement algorithms is proposed to cater this solution. The proposed RSSI based tracking technique is divided into two main phases, namely the calibration of RSSI coefficients (deterministic phase) and the distance along with position estimation of target location by iterative trilateration (probabilistic phase). Experiment measurements are carried out to analyze trilateration method in tracking an object. The results reveal the feasibility of these algorithms in designing target positioning system with acceptable offset.
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