Auflistung nach Schlagwort "GPS"
Anzeige der Dokumente 1-10 von 10
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Comparison of seasonal and longitudinal variation of daytime MSTID activity using GPS observation and GAIA simulations
(Earth, Planets and Space, 2021-02-04)The total electron content (TEC) data derived from the GAIA (Ground-to-topside model of Atmosphere Ionosphere for Aeronomy) is used to study the seasonal and longitudinal variation of occurrence of medium-scale traveling ... -
Elastic Fault Interactions and Earthquake Rupture Along the Southern Hellenic Subduction Plate Interface Zone in Greece
(Geophysical Research Letters, 2020)The importance of splay-thrust faults in subduction seismogenesis is increasingly acknowledged; however, their elastic interaction with the plate interface remains unclear. Here, we use GPS velocities, constrained by ... -
Estimation of absolute GNSS satellite antenna group delay variations based on those of absolute receiver antenna group delays
(GPS Solutions, 2021-06-09)GNSS satellite and receiving antennas exhibit group delay variations (GDV), which affect code pseudorange measurements. Like antenna phase center variations, which affect phase measurements, they are frequency-dependent ... -
Extending access to localizer performance with vertical guidance approaches by means of an SBAS to GBAS converter
(GPS Solutions, 2020-01-13)Currently, many commercial airline aircraft cannot perform three-dimensionally guided approaches based on satellite-based augmentation systems. We propose a system to rebroadcast the correction and integrity data via a ... -
Integrated processing of ground- and space-based GPS observations: improving GPS satellite orbits observed with sparse ground networks
(Journal of Geodesy, 2020-10-10)The precise orbit determination (POD) of Global Navigation Satellite System (GNSS) satellites and low Earth orbiters (LEOs) are usually performed independently. It is a potential way to improve the GNSS orbits by integrating ... -
Novel Quantification of Shallow Sediment Compaction by GPS Interferometric Reflectometry and Implications for Flood Susceptibility
(Geophysical Research Letters, 2020)Estimates of flood susceptibility and land loss in the world's coastal regions depend on our knowledge of sea level rise (SLR) from increases in ocean mass and volume, as well as knowledge of vertical land motion. Conventional ... -
Observations of Laboratory and Natural Slow Slip Events: Hikurangi Subduction Zone, New Zealand
(Geochemistry, Geophysics, Geosystems, 2020)Slow slip events (SSEs) are recognized as an important component of plate boundary fault slip, and there is a need for laboratory friction data on natural samples to guide comparisons with natural SSEs. Here, we compile a ... -
On the possibility of getting traceable time and frequency measurements via GNSS receivers
(GPS Solutions, 2020-09-02)The realization of Coordinated Universal Time, one of the tasks of the International Bureau of Weights and Measures, relies on a network of international time links which currently is organized in a star-like scheme that ... -
Precise point positioning with GPS and Galileo broadcast ephemerides
(GPS Solutions, 2021-03-27)For more than 20 years, precise point positioning (PPP) has been a well-established technique for carrier phase-based navigation. Traditionally, it relies on precise orbit and clock products to achieve accuracies in the ... -
Sentinel-6A precise orbit determination using a combined GPS/Galileo receiver
(Journal of Geodesy, 2021-09-05)The Sentinel-6 (or Jason-CS) altimetry mission provides a long-term extension of the Topex and Jason-1/2/3 missions for ocean surface topography monitoring. Analysis of altimeter data relies on highly-accurate knowledge ...