Localization Techniques

This chapter concentrates on localization and explores what types of location information exist for wireless sensor networks (WSN) and how to obtain them with some basic techniques. It discusses the properties and peculiarities of location information for sensor nodes. It is important to decide what the scope is and the kind of location information you need before you start implementing the localization method. Pre‐deployment schemes include all possible methods to provide sensor nodes with their location information before installing them in the environment. For sensor nodes localization, you first do some measurements and then decide on your location. However, instead of adopting their location as in proximity schemes, in ranging schemes we try to compute our own position depending on the measurements that we do. Range‐free localization is a combination of proximity‐based and ranging techniques. Finally, the chapter explores some of the most important and widely used in this strategies.