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Spacecraft attitude estimation based on magnetometer measurements and the covariance intersection algorithm

Spacecraft attitude estimation based on magnetometer measurements and the covariance intersection algorithm
Spacecraft attitude estimation based on magnetometer measurements and the covariance intersection algorithm
This paper describes the design of an autonomous attitude determination and estimation system based only on magnetometer measurements. Initial angle determination is performed through averaging of a large pool of measurements which eliminates the large error in the theoretical field model. Attitude estimation is undertaken using a so-called covariance intersection method which guarantees consistent estimates even if the correlation level between the predictions and measurements is not known. Test results show that this averaging approach is capable of providing very accurate initial attitude determination and that the covariance intersection estimator is capable of maintaining this property. Overall, we conclude that the system developed here is feasible for obtaining and maintaining high accuracy attitude estimation using only magnetometer measurements.
aerospace testing, artificial satellites, attitude measurement, covariance analysis, magnetometers, angle determination, correlation level, covariance intersection algorithm, magnetometer measurements, nanosatellites, spacecraft attitude estimation, theoretical field model
0-7803-7231-X
2205-2219
IEEE
Michelareas, G.
ceaff3f2-7fab-4276-b5bb-f6585f2de96b
Gabriel, S.B.
ac76976d-74fd-40a0-808d-c9f68a38f259
Rogers, E.
990fd784-1526-448f-8d55-66685622831d
Michelareas, G.
ceaff3f2-7fab-4276-b5bb-f6585f2de96b
Gabriel, S.B.
ac76976d-74fd-40a0-808d-c9f68a38f259
Rogers, E.
990fd784-1526-448f-8d55-66685622831d

Michelareas, G., Gabriel, S.B. and Rogers, E. (2002) Spacecraft attitude estimation based on magnetometer measurements and the covariance intersection algorithm. In Proceedings of IEEE Aerospace Conference 2002. IEEE. pp. 2205-2219 . (doi:10.1109/AERO.2002.1035387).

Record type: Conference or Workshop Item (Paper)

Abstract

This paper describes the design of an autonomous attitude determination and estimation system based only on magnetometer measurements. Initial angle determination is performed through averaging of a large pool of measurements which eliminates the large error in the theoretical field model. Attitude estimation is undertaken using a so-called covariance intersection method which guarantees consistent estimates even if the correlation level between the predictions and measurements is not known. Test results show that this averaging approach is capable of providing very accurate initial attitude determination and that the covariance intersection estimator is capable of maintaining this property. Overall, we conclude that the system developed here is feasible for obtaining and maintaining high accuracy attitude estimation using only magnetometer measurements.

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More information

Published date: 2002
Venue - Dates: IEEE Aerospace Conference 2002, Big Sky, USA, 2002-03-09 - 2002-03-16
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Keywords: aerospace testing, artificial satellites, attitude measurement, covariance analysis, magnetometers, angle determination, correlation level, covariance intersection algorithm, magnetometer measurements, nanosatellites, spacecraft attitude estimation, theoretical field model

Identifiers

Local EPrints ID: 22308
URI: http://eprints.soton.ac.uk/id/eprint/22308
ISBN: 0-7803-7231-X
PURE UUID: e13475db-0163-42ed-928f-7bf74c395cca

Catalogue record

Date deposited: 05 Apr 2006
Last modified: 06 Oct 2020 23:43

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Contributors

Author: G. Michelareas
Author: S.B. Gabriel
Author: E. Rogers

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