Pseudo-Linear Kalman Filter for Attitude Estimation of a Spinning Nanosatellite

Date

2017-06-09

Author

Söken, Halil Ersin
Kallio, Esa
Visala, Arto
Selkainaho, Jorma

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This paper presents the pseudo-linear estimation approach to the high-rate spinning small spacecraft attitude estimation problem. The sensor suit utilised in the presented approach uses gyro, magnetometer and sun-sensor measurements. The presented estimation technique has been designed particularly for the problem of attitude determination during the Aalto-1 nanosatellite's Plasma Brake Experiment (PBE). The design of the PBE demands the satellite to be spun up to 200 deg/s for deploying the tether by the use of centrifugal force resulting from the spin motion. The spinning up of the satellite is achieved only through the magnetic actuation. The used spin controller has been proven to be very robust for different initial conditions and operating scenarios. However, it demands accurate attitude estimates in order to efficiently and successfully spin the satellite up to the required angular velocity. Magnetometers are the most important sensors amongst the available onboard for the presented setup. The reason for this is that the system has the inputs only from the magnetometers and gyros during the eclipse period. It is necessary to estimate the magnetometer biases because the systems are very closely integrated and there is a higher risk of electromagnetic interference in them. A pseudo-linear Kalman Filter (PSLKF) has been studied. The two cases of integrated and separate attitude estimation and magnetometer calibration algorithms have been studied and analyzed in the perspective of their use onboard a nanosatellite.

Subject Keywords

Nanosatellite, Pseudo-linear Kalman filter, Attitude estimation

URI

https://archive.ists.or.jp/upload_pdf/2017-f-065.pdf
https://hdl.handle.net/11511/79282
https://ieeexplore.ieee.org/document/8003008

Conference Name

2017 8th International Conference on Recent Advances in Space Technologies (RAST)

Collections

Department of Aerospace Engineering, Conference / Seminar

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Citation Formats

H. E. Söken, E. Kallio, A. Visala, and J. Selkainaho, “Pseudo-Linear Kalman Filter for Attitude Estimation of a Spinning Nanosatellite,” presented at the 2017 8th International Conference on Recent Advances in Space Technologies (RAST), Istanbul, TURKEY, 2017, Accessed: 00, 2021. [Online]. Available: https://archive.ists.or.jp/upload_pdf/2017-f-065.pdf.