Willy Bertiger
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View article: Gravity Imaging Radio Observer (GIRO) for Planetary Science and Mission Opportunities
Gravity Imaging Radio Observer (GIRO) for Planetary Science and Mission Opportunities Open
The Gravity Imaging Radio Observer (GIRO) is a concept for a high-performance, battery-powered radio probe designed to be released in the proximity of a target planetary body to study its gravitational variations. Using the host spacecraft…
DORIS IGN-IPGP/JPL Analysis Center: Current Status and Future Developments  Open
This study outlines the current status of DORIS data processing using the GipsyX software at the IGN-IPGP/JPL analysis center within the International DORIS Service (IDS). We detail the methodological evolution implemented since late 2023 …
Geodetic Technique Combinations at the Observation Level: Advancements in Terrestrial Reference Frame Recovery Open
JPL has developed a terrestrial reference frame (TRF) based on combining space geodetic techniques at the observation level. The current version includes observations from the Global Positioning System (GPS), Satellite Laser Ranging (SLR) …
A Global Combination of Geodetic Techniques at the Observation Level: New Perspectives on the Terrestrial Reference Frame Open
We describe the development and assessment of a new terrestrial reference frame (TRF) based on a combination of geodetic techniques at the observation level over the period 2010–2022. Included in the solution are observations from the Glob…
GRACE and GRACE-FO Level-1 V04 Data Processing Status Open
The Gravity Recovery and Climate Experiment Follow-On (GRACE-FO), launched in May 2018, provides invaluable information about mass change in the Earth system, continuing the legacy of GRACE. Fundamental requirements for successful mass cha…
View article: Recovering Differential Forces From the GRACE‐D Accelerometer
Recovering Differential Forces From the GRACE‐D Accelerometer Open
The reduction of non‐gravitational accelerations through an onboard accelerometer is a vital part of accurately estimating gravity fields for Gravity Recovery and Climate Experiment (GRACE) Follow‐On (GRACE‐FO). Current accelerometer quali…
A New Realization of the Terrestrial Reference Frame: Combining GPS, SLR and VLBI at the Observation Level from 2010–2022 Open
We describe the development and assessment of a new terrestrial reference frame (TRF) based on combining GPS, SLR and VLBI at the observation level over the period 2010–2022. Included in the solution, in addition to station coordinat…
GRACE and GRACE-FO Level-1 V04 Data Processing Status Open
<p>The Gravity Recovery and Climate Experiment Follow-On (GRACE-FO), launched in May 2018, provides invaluable information about mass change in the Earth system, continuing the legacy of GRACE. Fundamental requirements for successful…
GRACE and GRACE-FO Level-1 V04 Data Processing Status Open
<p>The Gravity Recovery and Climate Experiment Follow-On (GRACE-FO), launched in May 2018, provides invaluable information about mass change in the Earth system, continuing the legacy of GRACE. Fundamental requirements for successful…
View article: Extending the Global Mass Change Data Record: GRACE Follow‐On Instrument and Science Data Performance
Extending the Global Mass Change Data Record: GRACE Follow‐On Instrument and Science Data Performance Open
Since June, 2018, the Gravity Recovery and Climate Experiment Follow‐On (GRACE‐FO) is extending the 15‐year monthly mass change record of the GRACE mission, which ended in June 2017. The GRACE‐FO instrument and flight system performance ha…
V04 Level-1 data processing status for GRACE and GRACE Follow-On Open
<p>On May 22, 2020, the Gravity Recovery and Climate Experiment Follow-On (GRACE-FO), will celebrate two years of successful in-orbit operation. The primary goal of this satellite mission is to provide information about time variatio…