Print Email Facebook Twitter Potential of cost-efficient single frequency GNSS receivers for water vapor monitoring Title Potential of cost-efficient single frequency GNSS receivers for water vapor monitoring Author Krietemeyer, A. (TU Delft Water Resources) ten Veldhuis, Marie-claire (TU Delft Water Resources) van der Marel, H. (TU Delft Mathematical Geodesy and Positioning) Realini, Eugenio (GReD—Geomatics Research & Development) van de Giesen, N.C. (TU Delft Water Resources) Date 2018-09-18 Abstract Dual-frequency Global Navigation Satellite Systems (GNSSs) enable the estimation of Zenith Tropospheric Delay (ZTD) which can be converted to PrecipitableWater Vapor (PWV). The density of existing GNSS monitoring networks is insufficient to capture small-scale water vapor variations that are especially important for extreme weather forecasting. A densification with geodetic-grade dual-frequency receivers is not economically feasible. Cost-efficient single-frequency receivers offer a possible alternative. This paper studies the feasibility of using low-cost receivers to increase the density of GNSS networks for retrieval of PWV. We processed one year of GNSS data from an IGS station and two co-located single-frequency stations. Additionally, in another experiment, the Radio Frequency (RF) signal from a geodetic-grade dual-frequency antenna was split to a geodetic receiver and two low-cost receivers. To process the single-frequency observations in Precise Point Positioning (PPP) mode, we apply the Satellite-specific Epoch-differenced IonosphericDelay (SEID)model using two different reference network configurations of 50-80 km and 200-300 km mean station distances, respectively. Our research setup can distinguish between the antenna, ionospheric interpolation, and software-related impacts on the quality of PWV retrievals. The study shows that single-frequency GNSS receivers can achieve a quality similar to that of geodetic receivers in terms of RMSE for ZTD estimations. We demonstrate that modeling of the ionosphere and the antenna type are the main sources influencing the ZTD precision. Subject GNSS meteorologyGoGPSGPSLow-cost receiversPrecipitable water vaporPrecise Point PositioningSEIDSingle frequency GNSSZenith Tropospheric DelayOA-Fund TU Delft To reference this document use: http://resolver.tudelft.nl/uuid:111200bf-27c4-4063-9bd1-cf562ab69354 DOI https://doi.org/10.3390/rs10091493 ISSN 2072-4292 Source Remote Sensing, 10 (9) Part of collection Institutional Repository Document type journal article Rights © 2018 A. Krietemeyer, Marie-claire ten Veldhuis, H. van der Marel, Eugenio Realini, N.C. van de Giesen Files PDF remotesensing_10_01493.pdf 2.85 MB Close viewer /islandora/object/uuid:111200bf-27c4-4063-9bd1-cf562ab69354/datastream/OBJ/view