Testbed Implementation and Refinement of a Range-based Localization Algorithm for Wireless Sensor Networks

摘要

Many wireless sensor networks (WSN) applications require a more or less accurate degree of knowledge of the sensing nodes' positions. This information can be even crucial in rescue scenarios, battlefield surveillance, object movement tracking and so on. Furthermore, some routing protocols for WSNs may require geographic data to perform handshakes and forwarding operations. In our paper, we deploy and study ROCRSSI+, a refinement of a localization algorithm based on received signal strength measures. We then evaluate the algorithm by simulation and by implementation on an indoor testbed, identifying which impairments could hamper its functioning, and illustrating how to compensate for them.