Cooperative Localization Algorithm based on Coverage Optimization of Actors for Wireless Sensor and Actor Networks

Journal of Networks

关键词: Virtual Force;    Range-Free Localization;    Mobile Actors;    WSAN;    WSN;   

Others  :  1017497
DOI  :  10.4304/jnw.9.5.1145-1156

【 摘 要 】

Different from existing range-free algorithms in wireless sensor networks (WSN), a cooperative localization algorithm based on coverage optimization of actors (CLCOA) for wireless sensor and actor networks (WSAN) is proposed. It uses mobile actors instead of anchors in WSN. Firstly, the area of the unknown node is determined through the movement of positioning actors. Then this area decreases through iteration. When localization accuracy is satisfied, the centroid of this area is calculated and treated as the coordinate of the unknown node. Free actors adjust their positions through virtual force while locating actors work. Accordingly, actors’ coverage is optimized. Via simulation, it is proven that CLCOA has high locating accuracy with RSSI error and GPS error, and the introduction of virtual force improves actors’ coverage and locating speed

【 授权许可】

   
@ 2006-2014 by ACADEMY PUBLISHER – All rights reserved.