The automatic and simultaneous identification, localization, and tracking of targets using electromagnetic radiation started mainly as a military application in radar systems. In the early 1970s, commercial tracking of large and expensive goods emerged, followed by smaller items by the end of the 20th century. Since then, RF identification (RFID) became almost ubiquitous in commercial applications, e.g., tracking and identification of goods or electronic article surveillance.
Especially passive UHF RFID has come a long way since the first standardization in the early 2000s. Since then, it has become a widespread technology, with applications from supply chain management to laundry services. Even though it is a technically mature system, several problems remain elusive. This list of ongoing research interests include tag sensitivity (minimum operational power), self-jamming (carrier suppression), tag-based sensing, and positioning.
With its main field of competence in signal processing and channel modeling, the SPSCs contributions in these fields of research include channel and system modeling, positioning algorithms, as well as a large simulation framework available under GNU GPL.