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Proceedings Paper • Open Access

Low cost Earth attitude sensor
Author(s): Fabrizio Liberati; Giorgio Perrotta; Fulvia Verzegnassi

Paper Abstract

A patent-pending, low-cost, moderate performance, Earth Attitude Sensor for LEO satellites is described in this paper. The paper deals with the system concepts, the technology adopted and the simulation results. The sensor comprises three or four narrow field of view mini telescopes pointed towards the Earth edge to detect and measure the variation of the off-nadir angle of the Earth-to-black sky transition using thermopile detectors suitably placed in the foci of the optical min telescopes. The system’s innovation consists in the opto-mechanical configuration adopted that is sturdy and has no moving parts being , thus, inherently reliable. In addition, with a view to reducing production costs, the sensor does without hi-rel and is instead mainly based on COTS parts suitably chosen. Besides it is flexible and can be adapted to perform attitude measurement onboard spacecraft flying in orbits other than LEO with a minimum of modifications to the basic design. At present the sensor is under development by IMT and OptoService.

Paper Details

Date Published: 21 November 2017
PDF: 6 pages
Proc. SPIE 10568, International Conference on Space Optics — ICSO 2004, 105680W (21 November 2017); doi: 10.1117/12.2307989
Show Author Affiliations
Fabrizio Liberati, OptoService S.r.l (Italy)
Giorgio Perrotta, IMT S.r.l. (Italy)
Fulvia Verzegnassi, Consultant (Italy)

Published in SPIE Proceedings Vol. 10568:
International Conference on Space Optics — ICSO 2004
Josiane Costeraste; Errico Armandillo, Editor(s)

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