Sensor Deployment and Target Localization Based on Virtual Forces

— The effectiveness of cluster-based distributed sensor networks depends to a large extent on the coverage provided by the sensor deployment. We propose a virtual force algorithm (VFA) as a sensor deployment strategy to enhance the coverage after an initial random placement of sensors. For a given number of sensors, the VFA algorithm attempts to maximize the sensor field coverage. A judicious combination of attractive and repulsive forces is used to determine virtual motion paths and the rate of movement for the randomly-placed sensors. Once the effective sensor positions are identified, a one-time movement with energy consideration incorporated is carried out, i.e., the sensors are redeployed to these positions. We also propose a novel probabilistic target localization algorithm that is executed by the cluster head. The localization results are used by the cluster head to query only a few sensors (out of those that report the presence of a target) for more detailed information. Si...

• Type: Conference
• Year: 2003
• Where: INFOCOM
• Authors: Yi Zou, Krishnendu Chakrabarty
• Keywords: Cluster-based Distributed Sensor, Communications, INFOCOM 2003, Sensor Deployment, Sensors