Location Estimation of Wireless Sensor Networks Using Spring-Relaxation Technique with Confident Update

Self-localization becomes the main issue for wireless sensor network (WSNs) because WSNs is widely used in various applications that adapt on industries, domestic animal raising and so on. For the low-cost localization and suitable in a real deployment solution, the extra hardware equipment is unsuitable due to its size, power requirement and memory constrain sensor nodes. The Spring-Relaxation localization is a method which can support the requirement of localization. In this paper, we propose the use of a confident value to indicate the correctness of a node's location. Our study shows we can improve the original spring-relaxation distance error by using 40 confidence values. 