enhancing rssi-based tracking accuracy in wireless sensor networks bracha hod based on a joint work...
Post on 21-Dec-2015
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Enhancing RSSI-based Tracking Accuracy in Wireless Sensor
Networks
Bracha HodBracha HodBased on a joint work with: Based on a joint work with:
Gaddi Blumrosen, Dr. Tal Anker, Gaddi Blumrosen, Dr. Tal Anker, Prof. Danny Dolev and Prof. Boris Prof. Danny Dolev and Prof. Boris
RubinskyRubinsky
Motivation Precise tracking systems in an indoor
environment are important in many fields, such as sports and medicine
Wireless sensor networks can provide motion and location tracking
RSSI-based Tracking RSSI (Received Signal Strength
Indicator) is a measurement of the signal power on a radio link
RSSI-based tracking includes two steps Range estimation between pairs of nodes
based on RSSI measurements Location estimation using geometric or
statistical methods applied on the information from all nodes
Simple and cheap, widely used, low-power consumption, and not suffer from any drift
Contribution Existing RSSI-based tracking systems
provide a tracking accuracy in the scale of a meter Variations in the wireless medium,
reflections, scatterers, multi-paths interference
Our RSSI-based tracking system achieves an accuracy in the order of a few centimeters Close-proximity High transmission rate
Setup The mobile node transmits data
packets The static sensor nodes receive
packets from the mobile node and calculate the RSSI
The computer processes the information and estimates the mobile node’s location
Summary We proposed a new RSSI-based
tracking system that achieves a high accuracy Close-proximity High transmission rate
Future work Integration of RSSI measurements
with other motion sensors More extensive experiments