Distributed Direction-Based Localization in Wireless Sensor Networks

Location awareness is an attractive research issue in the wireless sensor network (WSN). However, precise location information may be unavailable due to the constraint in energy, computation, or terrain. Additionally, several applications can tolerate the diverse level of inaccuracy in such geographic information. Thus, this paper presents a direction-based localization scheme, DLS, whose main goal is for each sensor to determine its direction rather than its absolute position. The direction we are concerned with is the one relative to the sink. Motivated by the proposed spatial locality property, DLS considers multiple messages received for a sensor to determine its direction. Furthermore, a novel scheme, anchor deployment strategy, is also proposed for the improvement of the estimated correctness in direction of the sensor within the communication range of the sink. With the aid of the virtual dual direction coordinate (VDDC) system, DLS is able to efficiently and precisely position...

• Type: Conference
• Year: 2005
• Where: ISCC
• Authors: Kuei-Ping Shih, Sheng-Shih Wang
• Keywords: Communications, Dual Direction Coordinate, ISCC 2005, Sensors, Wireless Sensor Network