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Status of the International Gravity Reference System and Frame
(
- Journal of Geodesy
, 2021-01-08)
The increasing importance of terrestrial gravimetry in monitoring global change processes, in providing a reference for satellite measurements and in applications in metrology necessitates a stable reference system reflecting ...
Self-tuning robust adjustment within multivariate regression time series models with vector-autoregressive random errors
(
- Journal of Geodesy
, 2020-05-10)
The iteratively reweighted least-squares approach to self-tuning robust adjustment of parameters in linear regression models with autoregressive (AR) and t-distributed random errors, previously established in Kargoll et ...
Gravity field modelling for the Hannover 10 m atom interferometer
(
- Journal of Geodesy
, 2020-11-27)
Absolute gravimeters are used in geodesy, geophysics and physics for a wide spectrum of applications. Stable gravimetric measurements over timescales from several days to decades are required to provide relevant insight ...
Extended forward and inverse modeling of radiation pressure accelerations for LEO satellites
(
- Journal of Geodesy
, 2020-03-26)
For low Earth orbit (LEO) satellites, activities such as precise orbit determination, gravity field retrieval, and thermospheric density estimation from accelerometry require modeled accelerations due to radiation pressure. ...
Using quantum optical sensors for determining the Earth’s gravity field from space
(
- Journal of Geodesy
, 2020-07-24)
Quantum optical technology provides an opportunity to develop new kinds of gravity sensors and to enable novel measurement concepts for gravimetry. Two candidates are considered in this study: the cold atom interferometry ...
Integration of airborne gravimetry data filtering into residual least-squares collocation: example from the 1 cm geoid experiment
(
- Journal of Geodesy
, 2020-08-03)
Low-pass filters are commonly used for the processing of airborne gravity observations. In this paper, for the first time, we include the resulting correlations consistently in the functional and stochastic model of residual ...
The combined global gravity field model XGM2019e
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- Journal of Geodesy
, 2020-07-20)
XGM2019e is a combined global gravity field model represented by spheroidal harmonics up to degree and order (d/o) 5399, corresponding to a spatial resolution of 2′ (~ 4 km). As data sources, it includes the satellite model ...
Benefits of non-tidal loading applied at distinct levels in VLBI analysis
(
- Journal of Geodesy
, 2020-08-31)
In the analysis of very long baseline interferometry (VLBI) observations, many geophysical models are used for correcting the theoretical signal delay. In addition to the conventional models described by Petit and Luzum ...
Comparisons of CODE and CNES/CLS GPS satellite bias products and applications in Sentinel-3 satellite precise orbit determination
(
- GPS Solutions
, 2021-07-16)
To resolve undifferenced GNSS phase ambiguities, dedicated satellite products are needed, such as satellite orbits, clock offsets and biases. The International GNSS Service CNES/CLS analysis center provides satellite (HMW) ...
Fitting Cumulus Cloud Size Distributions From Idealized Cloud Resolving Model Simulations
(
- Journal of Advances in Modeling Earth Systems
, 2023-05-15)
<title xmlns:mml="http://www.w3.org/1998/Math/MathML">Abstract</title><p xmlns:mml="http://www.w3.org/1998/Math/MathML" xml:lang="en">Whereas it is now widely accepted that cumulus cloud sizes are power‐law distributed, ...