StarDust: a flexible architecture for passive localization in wireless sensor networks

The problem of localization in wireless sensor networks where nodes do not use ranging hardware, remains a challenging problem, when considering the required location accuracy, energy expenditure and the duration of the localization phase. In this paper we propose a framework, called StarDust, for wireless sensor network localization based on passive optical components. In the StarDust framework, sensor nodes are equipped with optical retro-reflectors. An aerial device projects light towards the deployed sensor network, and records an image of the reflected light. An image processing algorithm is developed for obtaining the locations of sensor nodes. For matching a node ID to a location we propose a constraint-based label relaxation algorithm. We propose and develop localization techniques based on four types of constraints: node color, neighbor information, deployment time for a node and deployment location for a node. We evaluate the performance of a localization system based on o...

• Type: Conference
• Year: 2006
• Where: SENSYS
• Authors: Radu Stoleru, Pascal Vicaire, Tian He, John A. Stankovic
• Keywords: Sensor Network, Sensor Networks, Sensor Nodes, SENSYS 2006, Wireless Sensor Network