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In-orbit data analysis of the inertial sensor for the TianQin-1 satellite

Urheber*innen

Annan,  Zhou
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Zebing,  Zhou
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

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Zitation

Annan, Z., Zebing, Z. (2023): In-orbit data analysis of the inertial sensor for the TianQin-1 satellite, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-3032


Zitierlink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5020309
Zusammenfassung
TianQin-1 satellite, which is the first technology demonstration satellite for the Chinese space-borne gravitational wave detector–TianQin project, tested the technologies of inertial sensing, micro-Newton propulsion, drag-free control, and laser interferometry. The TianQin-1 satellite is equipped with a high-precision inertial sensor with a designed resolution of 5×10-12 m/s2/Hz1/2 at 0.1 Hz. In-orbit results show a successful validation of drag-free control and the residual acceleration of TianQin-1 satellite has been suppressed to 5×10−11 m/s2/Hz1/2 at 10 mHz versus 2×10−9 m/s2/Hz1/2 thruster noise. Since the inertial sensor data reveals the non-gravitational forces acting on the satellite with high accuracy, in-orbit acceleration measurements can be used for the correction of empirical non-gravitational models.