Zobrazeno 1 - 10
of 54
pro vyhledávání: '"Robert Spero"'
Autor:
Samuel Francis, Christopher Woodruff, Robert Spero, Julie Rolla, Brent Ware, Vitali Mueller, Malte Misfeldt, Henry Wegener, Laura Mueller, Gerhard Heinzel, Kirk McKenzie
The current status of the LRI instrument will be presented. Topics will include a look at in-orbit LRI data following a firmware update in September 2022.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::39d16e90631209dd38d87c99b31ac28d
https://doi.org/10.5194/gstm2022-103
https://doi.org/10.5194/gstm2022-103
Autor:
Anthony Dávila Álvarez, Aaron Knudtson, Unmil Patel, Joseph Gleason, Harold Hollis, Jose Sanjuan, Neil Doughty, Glenn McDaniel, Jennifer Lee, James Leitch, Stephen Bennett, Riccardo Bevilacqua, Guido Mueller, Robert Spero, Brent Ware, Peter Wass, David Wiese, John Ziemer, John W. Conklin
Publikováno v:
Journal of Geodesy. 96
We describe a Simplified Gravitational Reference Sensor (S-GRS), an ultra-precise inertial sensor for future Earth geodesy missions. These sensors are used to measure or compensate for all non-gravitational accelerations of the host spacecraft so tha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5f4468b707bac2dd4cdfb2c684281205
https://doi.org/10.1007/s00190-022-01659-0
https://doi.org/10.1007/s00190-022-01659-0
Autor:
Robert Spero
Publikováno v:
Advances in Space Research. 67:1656-1664
Frequency-domain expressions are found for gradiometer and satellite-to-satellite tracking measurements of a point source on the surface of the Earth. The maximum signal-to-noise ratio as a function of noise in the measurement apparatus is computed,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::553bc8747b694110827ce793fa312999
https://doi.org/10.1016/j.asr.2020.12.019
https://doi.org/10.1016/j.asr.2020.12.019
Autor:
Athina Peidou, Felix Landerer, David Wiese, Matthias Ellmer, Eugene Fahnestock, Christopher McCullough, Robert Spero, Dah‐Ning Yuan
Publikováno v:
Geophysical Research Letters. 49
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7aadafd52d25018cd45e0e6a7de6ea97
https://doi.org/10.1029/2021gl095157
https://doi.org/10.1029/2021gl095157
Autor:
Emily Rose Rees, Robert Spero, Andrew J. Sutton, A. R. Wade, Kirk McKenzie, Daniel A. Shaddock
Publikováno v:
Optics express. 29(16)
The next generation of Gravity Recovery and Climate Experiment (GRACE)-like dual-satellite geodesy missions proposals will rely on inter-spacecraft laser interferometry as the primary instrument to recover geodesy signals. Laser frequency stability i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7fc2e6a51b23d357df3bd4ef8b547e43
https://pubmed.ncbi.nlm.nih.gov/34614915
https://pubmed.ncbi.nlm.nih.gov/34614915
Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) was launched on May 22, 2018. It carries the Laser Ranging Interferometer (LRI) as a technology demonstrator that measures the inter-satellite range with nanometer precision using a laser-l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5beaadab32085ffcce54cb512a7ea630
http://arxiv.org/abs/2107.02260
http://arxiv.org/abs/2107.02260
Autor:
Jehhal Liu, Henry Wegener, Joseph Trinh, David C Barr, James Howell, Andrew J. Sutton, Daniel A. Shaddock, C. Bogan, Bernd Zender, Mike A Davis, Gerhard Heinzel, Micah Kruger, Duo Wang, Frank Gilles, Martin S. Gilbert, R. Flatscher, M Herding, Christopher Woodruff, Anton Lebeda, Mark Katsumura, Benjamin Sheard, Carl Christian Liebe, S. Dubovitsky, Katrin Dahl, Rabi T. Wang, Christoph Mahrdt, Daniel Schütze, Frank Heine, Marcus Zimmermann, Kenneth Clark, Steve Windisch, Nicolas Grossard, Philipp Hager, Michelle Stephens, Brian Bachman Okihiro, Jerome Hauden, Kameron Larsen, Karsten Danzmann, William M. Folkner, Christian Dahl, Brent Ware, Burghardt Guenther, Glenn de Vine, Robert Spero, Andreas Eckardt, Malte Misfeldt, Joshua Ravich, Claus Braxmaier, Gary D. Spiers, Arnold Lebeda, J. Reiche, Gretchen Reavis, Thomas Ester, Frank Flechtner, Martin Hinz, Alexander Koch, Alexander Abramovici, Jeffrey Dickson, Andreas Baatzsch, Christoph Seiter, Robert Pierce, Kai Voss, Marina Kaufer, K. Nicklaus, Kirk McKenzie, Michael J Burke, Klaus Abich, Maxime P Bize, Phillip R Morton, Alex Murray, Vitali Müller, T. Mangoldt, Lynette Lobmeyer, William Klipstein, Michael Sileo, Martin Gohlke, Germán Fernández Barranco, Don J Nguyen, Bengie Amparan, Thomas Leikert, G. Stede, Samuel Francis, Josep Sanjuan
Publikováno v:
Physical Review Letters
Physical Review Letters 123 (2019), Nr. 3
Physical Review Letters 123 (2019), Nr. 3
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. A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4a929872638b0208e96db1be9fc062a5
https://pubmed.ncbi.nlm.nih.gov/31386438
https://pubmed.ncbi.nlm.nih.gov/31386438
Autor:
Edouard Schmidtlin, Jeffrey W. Yu, Thomas R. VanZandt, Martin W. Regehr, Robert Spero, Andreas Kuhnert, Feng Zhao, Peter G. Halverson, Jennifer Logan, Stuart Shaklan, Tallis Chang, Roman C. Gutierrez
Publikováno v:
International Conference on Space Optics — ICSO 2000.
The Space Interferometry Mission is an optical stellar interferometer with a 10 meter baseline capable of micro-arcsecond accuracy astrometry.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c0f9822c282e489d2da93555f25401a5
https://doi.org/10.1117/12.2307867
https://doi.org/10.1117/12.2307867
Autor:
Robert Spero, Nils Brause, Peter Gath, Christoph Mahrdt, Daniel A. Shaddock, Marina Dehne, Vitali Müller, William M. Folkner, Daniel Schütze, Karsten Danzmann, Benjamin Sheard, William Klipstein, G. Stede, K. Nicklaus, Oliver Gerberding, Gerhard Heinzel
Publikováno v:
Proceedings of SPIE Volume 10564
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 la
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::39b2c5b9c81150e14d57f45010bf589f
https://hdl.handle.net/21.11116/0000-0003-572B-C21.11116/0000-0003-572D-A
https://hdl.handle.net/21.11116/0000-0003-572B-C21.11116/0000-0003-572D-A
Autor:
William Klipstein, Glenn de Vine, Samuel P. Francis, Andrew J. Sutton, Robert Spero, Daniel A. Shaddock, Kirk McKenzie, Brent Ware
Publikováno v:
Physical Review D. 92
We have demonstrated the viability of using the Laser Ranging Interferometer on the Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) space mission to test key aspects of the interspacecraft interferometry proposed for detecting gravitatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8c0d4912d56a56dacc23aecdbe3ded1c
https://doi.org/10.1103/physrevd.92.012005
https://doi.org/10.1103/physrevd.92.012005