EuroGNC 2019 Paper Abstract

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Paper WeA3.3

Nainer, Carlo (University of Lorraine), Garnier, Hugues (University of Lorraine), Gilson, Marion (Université de Lorraine), EVAIN, Helene (CNES), Pittet, Christelle (CNES)

In-Flight Inertia Matrix Estimation of a Gyroless Satellite

Scheduled for presentation during the Regular Session "Estimation 1" (WeA3), Wednesday, April 3, 2019, 16:00−16:30, BL281.2

5th CEAS Conference on Guidance, Navigation and Control, April 3-5, 2019, Milano, Italy

This information is tentative and subject to change. Compiled on March 28, 2024

Keywords Parameter estimation, Spacecraft attitude control

Abstract

Knowledge of the inertia parameters is vital to guarantee a correct attitude control of a spacecraft. The relatively low accuracy of their estimate prior to launch, together with possible changes of these quantities, make the in-orbit inertia estimation a problem of great interest. In this work, the estimation of the inertia matrix for a gyroless satellite is considered. An iterative instrumental variable algorithm is proposed that relies on the star tracker measurements. A semi-adaptive filter is designed in order to achieve low variance estimates, by taking care of both sensor noise and torque disturbances. The performance of the proposed algorithm is then analyzed via Monte Carlo simulations, using data generated from a high-fidelity simulator.

 

 

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