Localization and tracking are key functionalities in ubiquitous
computing systems and techniques. In recent years a very high variety of
approaches, sensors and techniques for indoor and GPS-denied
environments have been developed. This book briefly summarizes the
current state of the art in localization and tracking in ubiquitous
computing systems focusing on cluster-based schemes. Additionally,
existing techniques for measurement integration, node
inclusion/exclusion and cluster head selection are also described in
this book.