Ranging energy optimization for robust sensor positioning with collaborative anchors

We propose a sensor positioning scheme for a wireless sensor network consisting of beacons as well as collaborative anchors (CA) to help sensors within a prescribed service area to locate themselves. We assume a robust performance is achieved in the sense that a prescribed location accuracy requirement is fulfilled within the service area. Under the assumption that the time-of-arrival and location estimators adopted achieve the associated Cram´er-Rao bound, the performance of the location scheme is derived and analyzed. A ranging energy optimization problem is proposed, and a practical algorithm is presented. The effectiveness of this algorithm is illustrated by numerical experiments.

• Type: Conference
• Year: 2010
• Where: ICASSP
• Authors: Tao Wang, Geert Leus
• Keywords: ICASSP 2010, Sensor Positioning Scheme, Service Area, Signal Processing, Wireless Sensor Network