Results 21 to 30 of about 594 (208)

Comparing GRACE-FO KBR and LRI Ranging Data with Focus on Carrier Frequency Variations

Remote Sensing, 2022
The GRACE Follow-On satellite mission measures distance variations between its two satellites in order to derive monthly gravity field maps, indicating mass variability on Earth on a scale of a few 100 km originating from hydrology, seismology ...
Vitali Müller, Markus Hauk, Malte Misfeldt, Laura Müller, Henry Wegener, Yihao Yan, Gerhard Heinzel   +6 more
doaj   +1 more source

Laser ranging interferometer for GRACE follow-on [PDF]

International Conference on Space Optics — ICSO 2012, 2017
The Gravity Recovery and Climate Experiment (GRACE) has produced a wealth of data on Earth gravity, hydrology, glaciology and climate research. To continue that data after the imminent end of the GRACE mission, a follow-on mission is planned to be launched in 2017, as a joint USGerman project with a smaller Australian contribution.
Heinzel, G., Sheard, B., Brause, N., Danzmann, K., Dehne, M., Gerberding, O., Mahrdt, C., Müller, V., Schütze, D., Stede, G., Klipstein, W., Folkner, W., Speroy, R., Nicklaus, K., Gath, P., Shaddock, D.   +15 more
openaire   +3 more sources

On-Orbit Calibration of the KBR Antenna Phase Center of GRACE-Type Gravity Satellites

Remote Sensing, 2022
The coordinates of the KBR (K-band ranging system) antenna phase center of GRACE-type gravity satellites in the satellite Science Reference Frame should be precisely known, and the determination accuracy should reach 0.3 mrad in the Y (pitch) and Z (yaw)
Zhiyong Huang, Shanshan Li, Lingyong Huang, Diao Fan   +3 more
doaj   +1 more source

Tracking inter-annual terrestrial water storage variations over Lake Baikal basin from GRACE and GRACE Follow-On missions

Journal of Hydrology: Regional Studies, 2022
The Gravity Recovery and Climate Experiment (GRACE) mission and its follow-on mission (GRACE Follow-On) can accurately track the Earth’s mass variations, which have been successfully used in various geoscience researches related to global and regional ...
Min Wei, Hao Zhou, Zhicai Luo, Min Dai
doaj   +1 more source

Preliminary Estimation and Validation of Polar Motion Excitation from Different Types of the GRACE and GRACE Follow-On Missions Data

Remote Sensing, 2020
The Gravity Recovery and Climate Experiment (GRACE) mission has provided global observations of temporal variations in the gravity field resulting from mass redistribution at the surface and within the Earth for the period 2002–2017.
Justyna Śliwińska, Małgorzata Wińska, Jolanta Nastula   +2 more
doaj   +1 more source

Satellite Gravity Field Recovery Using Variance‐Covariance Information From Ocean Tide Models

Earth and Space Science, 2023
Monthly gravity field recovery using data from the GRACE and GRACE Follow‐On missions includes errors limiting the spatial and temporal resolution of the estimated gravity fields.
Markus Hauk, Josefine Wilms, Roman Sulzbach, Natalia Panafidina, Michael Hart‐Davis, Christoph Dahle, Vitali Müller, Michael Murböck, Frank Flechtner   +8 more
doaj   +1 more source

Short-Term and Long-Term Replenishment of Water Storage Influenced by Lockdown and Policy Measures in Drought-Prone Regions of Central India

Remote Sensing, 2022
Central India faces a freshwater shortage due to its diverse terrain, sudden change in precipitation patterns and crystalline rock covered subsurface. Here, we investigate the patterns in terrestrial water storage anomaly (TWSA) over the last two decades,
Soumendra N. Bhanja, M. Sekhar
doaj   +1 more source

Assessment of GRACE/GRACE Follow-On Terrestrial Water Storage Estimates Using an Improved Forward Modeling Method: A Case Study in Africa

Frontiers in Earth Science, 2022
Leakage errors derived from spatial filters are the major limitation for estimating terrestrial water storage via the Gravity Recovery and Climate Experiment (GRACE) mission and the recently launched GRACE Follow-On mission.
Hao Zhou, Hao Zhou, Min Dai, Min Dai, Penghui Wang, Penghui Wang, Min Wei, Min Wei, Lu Tang, Lu Tang, Siyou Xu, Siyou Xu, Zhicai Luo, Zhicai Luo   +13 more
doaj   +1 more source

Autoregressive Reconstruction of Total Water Storage within GRACE and GRACE Follow-On Gap Period

Energies, 2022
For 15 years, the Gravity Recovery and Climate Experiment (GRACE) mission have monitored total water storage (TWS) changes. The GRACE mission ended in October 2017, and 11 months later, the GRACE Follow-On (GRACE-FO) mission was launched in May 2018 ...
Artur Lenczuk, Matthias Weigelt, Wieslaw Kosek, Jan Mikocki   +3 more
doaj   +1 more source

In-Orbit Performance of the GRACE Follow-on Laser Ranging Interferometer [PDF]

Physical Review Letters, 2019
The Laser Ranging Interferometer (LRI) instrument on the Gravity Recovery and Climate Experiment (GRACE) Follow-On mission has provided the first laser interferometric range measurements between remote spacecraft, separated by approximately 220 km. Autonomous controls that lock the laser frequency to a cavity reference and establish the 5 degrees of ...
Klaus Abich, Alexander Abramovici, Bengie Amparan, Andreas Baatzsch, Brian Bachman Okihiro, David C. Barr, Maxime P. Bize, Christina Bogan, Claus Braxmaier, Michael J. Burke, Ken C. Clark, Christian Dahl, Katrin Dahl, Karsten Danzmann, Mike A. Davis, Glenn de Vine, Jeffrey A. Dickson, Serge Dubovitsky, Andreas Eckardt, Thomas Ester, Germán Fernández Barranco, Reinhold Flatscher, Frank Flechtner, William M. Folkner, Samuel Francis, Martin S. Gilbert, Frank Gilles, Martin Gohlke, Nicolas Grossard, Burghardt Guenther, Philipp Hager, Jerome Hauden, Frank Heine, Gerhard Heinzel, Mark Herding, Martin Hinz, James Howell, Mark Katsumura, Marina Kaufer, William Klipstein, Alexander Koch, Micah Kruger, Kameron Larsen, Anton Lebeda, Arnold Lebeda, Thomas Leikert, Carl Christian Liebe, Jehhal Liu, Lynette Lobmeyer, Christoph Mahrdt, Thomas Mangoldt, Kirk McKenzie, Malte Misfeldt, Phillip R. Morton, Vitali Müller, Alexander T. Murray, Don J. Nguyen, Kolja Nicklaus, Robert Pierce, Joshua A. Ravich, Gretchen Reavis, Jens Reiche, Josep Sanjuan, Daniel Schütze, Christoph Seiter, Daniel Shaddock, Benjamin Sheard, Michael Sileo, Robert Spero, Gary Spiers, Gunnar Stede, Michelle Stephens, Andrew Sutton, Joseph Trinh, Kai Voss, Duo Wang, Rabi T. Wang, Brent Ware, Henry Wegener, Steve Windisch, Christopher Woodruff, Bernd Zender, Marcus Zimmermann   +82 more
openaire   +7 more sources