Macro-calibration in sensor/actuator networks

Authors:
Kamin Whitehouse;David Culler
Affiliations:
Computer Science, UC Berkeley, Berkeley, CA;Computer Science, UC Berkeley, Berkeley, CA
Venue:
Mobile Networks and Applications
Year:
2003

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Abstract

We describe an ad-hoc localization system for sensor networks and explain why traditional calibration methods are inadequate for this system. Building upon previous work, we frame calibration as a parameter estimation problem; we parameterize each device and choose the values of those parameters that optimize the overall system performance. This method reduces our average error from 74.6% without calibration to 10.1%. We propose ways to expand this technique to a method of autocalibration for localization as well as to other sensor network applications.