Accession Number : ADA613342


Title :   An Overview of GNSS Remote Sensing


Descriptive Note : Journal article


Corporate Author : NAVAL RESEARCH LAB STENNIS DETACHMENT STENNIS SPACE CENTER MS OCEANOGRAPHY DIV


Personal Author(s) : Yu, Kegen ; Rizos, Chris ; Burrage, Derek ; Dempster, Andrew G ; Zhang, Kefei ; Markgraf, Markus


Full Text : http://www.dtic.mil/dtic/tr/fulltext/u2/a613342.pdf


Report Date : 27 Aug 2014


Pagination or Media Count : 16


Abstract : The Global Navigation Satellite System (GNSS) signals are always available, globally, and the signal structures are well known, except for those dedicated to military use. They also have some distinctive characteristics, including the use of L-band frequencies, which are particularly suited for remote sensing purposes. The idea of using GNSS signals for remote sensing - the atmosphere, oceans or Earth surface - was first proposed more than two decades ago. Since then, GNSS remote sensing has been intensively investigated in terms of proof of concept studies, signal processing methodologies, theory and algorithm development, and various satellite-borne, airborne and ground-based experiments. It has been demonstrated that GNSS remote sensing can be used as an alternative passive remote sensing technology. Space agencies such as NASA, NOAA, EUMETSAT and ESA have already funded, or will fund in the future, a number of projects/missions which focus on a variety of GNSS remote sensing applications. It is envisaged that GNSS remote sensing can be either exploited to perform remote sensing tasks on an independent basis or combined with other techniques to address more complex applications. This paper provides an overview of the state of the art of this relatively new and, in some respects, underutilised remote sensing technique. Also addressed are relevant challenging issues associated with GNSS remote sensing services and the performance enhancement of GNSS remote sensing to accurately and reliably retrieve a range of geophysical parameters.


Descriptors :   *REMOTE DETECTION , NAVIGATION SATELLITES , RADIO SIGNALS , SIGNAL PROCESSING , WATER VAPOR


Subject Categories : Meteorology
      Geology, Geochemistry and Mineralogy
      Miscellaneous Detection and Detectors


Distribution Statement : APPROVED FOR PUBLIC RELEASE