{"paper":{"title":"On orbit performance of the GRACE Follow-On Laser Ranging Interferometer","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.geo-ph"],"primary_cat":"astro-ph.IM","authors_text":"Alexander Abramovici, Alexander Koch, Alexander T. Murray, Andreas Baatzsch, Andreas Eckardt, Andrew Sutton, Anton Lebeda, Arnold Lebeda, Bengie Amparan, Benjamin Sheard, Bernd Zender, Brent Ware, Brian Bachman Okihiro, Burghardt Guenther, Carl Christian Liebe, Christian Dahl, Christina Bogan, Christopher Woodruff, Christoph Mahrdt, Christoph Seiter, Claus Braxmaier, Daniel Sch\\\"utze, Daniel Shaddock, David C. Barr, Don J. Nguyen, Duo Wang, Frank Flechtner, Frank Gilles, Frank Heine, Gary Spiers, Gerhard Heinzel, Germ\\'an Fern\\'andez Barranco, Glenn de Vine, Gretchen Reavis, Gunnar Stede, Henry Wegener, James Howell, Jeffrey A. Dickson, Jehhal Liu, Jens Reiche, Jerome Hauden, Joseph Trinh, Josep Sanjuan, Joshua A. Ravich, Kai Voss, Kameron Larsen, Karsten Danzmann, Katrin Dahl, Ken C. Clark, Kirk McKenzie, Klaus Abich, Kolja Nicklaus, Lynette Lobmeyer, Malte Misfeldt, Marcus Zimmermann, Marina Kaufer, Mark Herding, Mark Katsumura, Martin Gohlke, Martin Hinz, Martin S. Gilbert, Maxime P. Bize, Micah Kruger, Michael J. Burke, Michael Sileo, Michelle Stephens, Mike A. Davis, Nicolas Grossard, Philipp Hager, Phillip R. Morton, Rabi T. Wang, Reinhold Flatscher, Robert Pierce, Robert Spero, Samuel Francis, Serge Dubovitsky, Steve Windisch, Thomas Ester, Thomas Leikert, Thomas Mangoldt, Vitali M\\\"uller, William Klipstein, William M. Folkner","submitted_at":"2019-06-28T22:38:11Z","abstract_excerpt":"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 degree of freedom two-way laser link between remote spacecraft succeeded on the first attempt. Active beam pointing based on differential wavefront sensing compensates spacecraft attitude fluctuations. The LRI has operated continuously without breaks in phase"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.00104","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}