The problem of pervasive indoor localization still remains largely unsolved due to the difficult propagation conditions. Some IoT applications will require real-time localization with submeter accuracy in GNSS-challenged environments. Furthermore, emerging outdoor applications will require more stringent localization accuracy and capability than those provided by GNSS. These considerations have stimulated research activities in the field of localization. To this end, network localization and navigation (NLN), a new paradigm for location awareness, has been proposed to enable a variety of new applications that rely on accurate position information of mobile objects. This special issue covers the foundations and trends of localization and navigation technologies with contributions from both academia and industry worldwide.

The special issue published in Proceedings of the IEEE, Foundations and Trends in Localization Technologies consists of two parts. It covers the foundations and trends of localization and navigation technologies with contributions from both academia and industry worldwide. The first part published in June, 2018 which introduced in June of SPM eNewsletter. The second part published in July consists of nine papers present different aspects of location-aware networks including foundations for network design and analysis, new techniques overcoming the limitations of traditional approaches, different types of wireless localization networks, and advanced data fusion techniques.