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Article
Multi-GNSS satellite clock estimation constrained with oscillator noise model in the existence of data discontinuity
During the past years, real-time precise point positioning has been proven to be an efficient tool in the applications of navigation, precise orbit determination of LEO as well as earthquake and tsunami early ...
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Article
Ionospheric map** functions based on electron density fields
We develop an ionospheric map** function (MF) for the global navigation satellite system (GNSS) which is based on the electron density field derived from the international reference ionosphere (IRI). The sta...
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Article
Improving the modeling of the atmospheric delay in the data analysis of the Intensive VLBI sessions and the impact on the UT1 estimates
The very long baseline interferometry (VLBI) Intensive sessions are typically 1-h and single-baseline VLBI sessions, specifically designed to yield low-latency estimates of UT1-UTC. In this work, we investigat...
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Chapter and Conference Paper
GFZ Global Multi-GNSS Network and Data Processing Results
The Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences (GFZ) is operating a worldwide Global Navigation Satellite Systems (GNSS) station network since many years. With recent developments in r...
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Chapter and Conference Paper
Status of the IGS-TIGA Tide Gauge Data Reprocessing at GFZ
The International GNSS Service (IGS) Tide Gauge Benchmark Monitoring Working Group (TIGA-WG) is responsible for analyzing GNSS data from stations at or near tide gauges (TG) on a preferably continuous basis an...
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Article
Open AccessTropospheric delay determination by Kalman filtering VLBI data
The troposphere is one of the most important error sources for space geodetic techniques relying on radio signals. Since it is not possible to model the wet part of the tropospheric delay with sufficient accur...