RSSI Based Tracking Algorithms for Wireless Sensor Networks

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RSSI Based Tracking Algorithms for Wireless Sensor Networks

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Organization

Localization and Tracking : State of the Art
- literature review;
- tool collection.

Simulation tests
- simulation set-up;
- algorithm comparison.

Experimental tests
- simulation validation;
- algorithm feasibility.

State of the Art: Tool Collection

LATERATION
Mobile nodes are localized using overlapping circles. The circumference radii are equal the estimated distance among nodes.

MINMAX
Mobile nodes are localized using squares regions. The square sides equal twice the estimated distance among nodes.

ROCRSSI+
Mobile nodes are localized using patchworks-like region slices. The region slices are drawn comparing the power received by the nodes.

BIAS
LATERATION is without error;
MINMAX and ROCRSSI+ inherently lead to estimation errors;
the bias becomes smaller as the anchor nodes increase.