Global Navigation Satellite System (GNSS) reflectometry and GNSS occultation were originally investigated about two decades ago and significant advances have been made since then. However, GNSS remote sensing is not yet a mature technique and more investigations are needed before this technique can be fully implemented and used to complement other operational remote sensing techniques. This special issue seeks to publish original contributions in theory, methodology, system hardware and software, and applications, to foster further development of this relatively new remote sensing technique. In particular, innovative signal detection and parameter estimation methods and techniques are desired to increase the efficiency and reliability of this remote sensing technique.
Edited by: Kegen Yu, Chris Rizos, Andrew Dempster, Kefei Zhang and Markus Markgraf