Laser link acquisition demonstration for the GRACE Follow-On mission
Wuchenich, Danielle M R; Mahrdt, Christoph; Sheard, Benjamin S; Francis, Samuel P; Spero, Robert E; Miller, John; Mow-Lowry, Conor M; Ward, Robert L; Klipstein, William M; Heinzel, Gerhard; Danzmann, Karsten; McClelland, David E; Shaddock, Daniel A
We experimentally demonstrate an inter-satellite laser link acquisition scheme for GRACE Follow-On. In this strategy, dedicated acquisition sensors are not required-instead we use the photodetectors and signal processing hardware already required for science operation. To establish the laser link, a search over five degrees of freedom must be conducted (± 3 mrad in pitch/yaw for each laser beam, and ± 1 GHz for the frequency difference between the two lasers). This search is combined with a...[Show more]
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