000007611 001__ 7611
000007611 005__ 20250722183015.0
000007611 0247_ $$2DOI$$a10.48550/arXiv.2505.21716
000007611 037__ $$aSCART-2025-0141
000007611 100__ $$aRoy, Soumen
000007611 245__ $$aProbing gravitational waves using GNSS constellations
000007611 260__ $$c2025
000007611 520__ $$aThe detection of gravitational waves opened up a new window to look into the Universe by probing phenomena invisible through electromagnetic observations. As gravitational waves interact very weakly with matter, their detection is challenging and expensive. So far, they have been observed in the nHz frequency and audible ranges. Future detectors are expected to cover the mHz frequency, leaving the μHz regime largely unexplored. With on-board atomic clocks and orbits determined to the cm, Global Navigation Satellite System constellations (GNSS), like GPS or Galileo, offer free access to more than 30 years of clock and orbit data for tests of general relativity. We develop a framework for calculating the deviation in the evolution of GNSS orbits induced by gravitational wave signals. We show that when a gravitational wave interacts in resonance with a satellite's orbit, effects amplify, which can be used to bridge the gap in the μHz regime. Finally, we demonstrate that the orbital deviations induced by gravitational waves are coherent across the entire constellation, enabling a satellite network to disentangle GW effects from satellite systematics.
000007611 594__ $$aNO
000007611 6531_ $$aGravitational waves
000007611 6531_ $$aPrecise orbit determination
000007611 6531_ $$aGNSS systems
000007611 700__ $$aBertrand, Bruno
000007611 700__ $$aJanquart, Justin
000007611 773__ $$pProceedings of the 2025 Gravitation session of the 59th Rencontres de Moriond$$y2025
000007611 8560_ $$fbruno.bertrand@ksb-orb.be
000007611 905__ $$apublished in
000007611 980__ $$aNONREF