[en] The analysis of GNSS signal and the use a dense network of ground-based stations allow to measure tropospheric parameters that can be used for near real-time (NRT) meteorological applications (e.g. monitoring of the delay of the neutral atmosphere and the detection of blobs of water vapour). On the other hand, the meteorological activity can impact GNSS positioning solutions. For this reason, NRT indicators of the tropospheric activity related to the disturbance of GNSS signal are required. Using a dense network of GNSS stations, this study presents a new NRT indicator based on the double differences of the ionosphere-free combination. To validate this indicator, the impact of severe weather conditions on RTK positioning solutions is shown.
Disciplines :
Space science, astronomy & astrophysics Earth sciences & physical geography Physical, chemical, mathematical & earth Sciences: Multidisciplinary, general & others
Author, co-author :
Brenot, Hugues; Institut d'aéronomie spatiale de Belgique
Wautelet, Gilles ; Université de Liège - ULiège > Département de géographie > Unité de Géomatique - Topographie et géométrologie
Warnant, René ; Université de Liège - ULiège > Département de géographie > Unité de Géomatique - Géodésie et GNSS
Neméghaire, Jean; Institut Royal Météorologique - IRM
Van Roozendael, Michel; Institut d'aéronomie spatiale de Belgique