Multi-modal calibration of surveillance sensor networks

Authors:
Min Ding;Andreas Terzis;I-Jeng Wang;Dennis Lucarelli
Affiliations:
Computer Science Department, George Washington University, Washington, DC;Computer Science Department, Johns Hopkins University, Baltimore, MD;Applied Physics Lab, Johns Hopkins University, Laurel, MD;Applied Physics Lab, Johns Hopkins University, Laurel, MD
Venue:
MILCOM'06 Proceedings of the 2006 IEEE conference on Military communications
Year:
2006

Citing 8
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Abstract

Target detection and localization is one of the key research challenges in sensor networks. In this paper we propose a heterogeneous wireless sensor network integrating imaging and non-imaging sensors to accomplish the detection and localization task in complex urban environments. The low-cost non-imaging sensors provide early detection and partial localization of potential targets and direct imaging sensors to focus on them. Accurate target location estimated by the imaging sensors is subsequently used for in-situ calibration of the non-imaging sensors so that localization error is minimized over time. We evaluate our approach through simulation and our preliminary results reveal that coordination across different sensing modalities increases localization accuracy and can reduce the amount of imaging data that must be carried by the network.