In-flight Quality and Accuracy of Attitude Measurements from the CHAMP Advanced Stellar Compass

Peter Siegbjørn Jørgensen; John Leif Jørgensen; Troelz Denver; Maurizio Betto

doi:10.1016/j.actaastro.2004.09.012

In-flight Quality and Accuracy of Attitude Measurements from the CHAMP Advanced Stellar Compass

Peter Siegbjørn Jørgensen, John Leif Jørgensen, Troelz Denver, Maurizio Betto

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

The German geo-observations satellite CHAMP carries highly accurate vector instruments. The orientation of these relative to the inertial reference frame is obtained using star trackers. These advanced stellar compasses (ASC) are fully autonomous units, which provide, in real time, the absolute attitude with accuracy in the arc second range. In order to investigate the in-flight accuracy of the ASC, the terminology to characterize noise and biases is introduced. Relative instrument accuracy (RIA) and absolute instrument accuracy (AIA) can in principle be determined in-flight. However problems with modeling external noise sources often arise. The special CHAMP configuration with two star tracker cameras mounted fixed together provides an excellent opportunity to determine the AIA in-flight using the inter boresight angle.

Original language	English
Journal	Acta Astronautica
Volume	56
Issue number	1-2
Pages (from-to)	181-186
DOIs	https://doi.org/10.1016/j.actaastro.2004.09.012
Publication status	Published - 2005

Access to Document

10.1016/j.actaastro.2004.09.012

OpenUrl availability

Full text

Cite this

@article{367fb87cc8114f9a8c14fea6fd22a57d,

title = "In-flight Quality and Accuracy of Attitude Measurements from the CHAMP Advanced Stellar Compass",

abstract = "The German geo-observations satellite CHAMP carries highly accurate vector instruments. The orientation of these relative to the inertial reference frame is obtained using star trackers. These advanced stellar compasses (ASC) are fully autonomous units, which provide, in real time, the absolute attitude with accuracy in the arc second range. In order to investigate the in-flight accuracy of the ASC, the terminology to characterize noise and biases is introduced. Relative instrument accuracy (RIA) and absolute instrument accuracy (AIA) can in principle be determined in-flight. However problems with modeling external noise sources often arise. The special CHAMP configuration with two star tracker cameras mounted fixed together provides an excellent opportunity to determine the AIA in-flight using the inter boresight angle.",

author = "J{\o}rgensen, {Peter Siegbj{\o}rn} and J{\o}rgensen, {John Leif} and Troelz Denver and Maurizio Betto",

year = "2005",

doi = "10.1016/j.actaastro.2004.09.012",

language = "English",

volume = "56",

pages = "181--186",

journal = "Acta Astronautica",

issn = "0094-5765",

publisher = "Pergamon Press",

number = "1-2",

}

TY - JOUR

T1 - In-flight Quality and Accuracy of Attitude Measurements from the CHAMP Advanced Stellar Compass

AU - Jørgensen, Peter Siegbjørn

AU - Jørgensen, John Leif

AU - Denver, Troelz

AU - Betto, Maurizio

PY - 2005

Y1 - 2005

N2 - The German geo-observations satellite CHAMP carries highly accurate vector instruments. The orientation of these relative to the inertial reference frame is obtained using star trackers. These advanced stellar compasses (ASC) are fully autonomous units, which provide, in real time, the absolute attitude with accuracy in the arc second range. In order to investigate the in-flight accuracy of the ASC, the terminology to characterize noise and biases is introduced. Relative instrument accuracy (RIA) and absolute instrument accuracy (AIA) can in principle be determined in-flight. However problems with modeling external noise sources often arise. The special CHAMP configuration with two star tracker cameras mounted fixed together provides an excellent opportunity to determine the AIA in-flight using the inter boresight angle.

AB - The German geo-observations satellite CHAMP carries highly accurate vector instruments. The orientation of these relative to the inertial reference frame is obtained using star trackers. These advanced stellar compasses (ASC) are fully autonomous units, which provide, in real time, the absolute attitude with accuracy in the arc second range. In order to investigate the in-flight accuracy of the ASC, the terminology to characterize noise and biases is introduced. Relative instrument accuracy (RIA) and absolute instrument accuracy (AIA) can in principle be determined in-flight. However problems with modeling external noise sources often arise. The special CHAMP configuration with two star tracker cameras mounted fixed together provides an excellent opportunity to determine the AIA in-flight using the inter boresight angle.

U2 - 10.1016/j.actaastro.2004.09.012

DO - 10.1016/j.actaastro.2004.09.012

M3 - Journal article

SN - 0094-5765

VL - 56

SP - 181

EP - 186

JO - Acta Astronautica

JF - Acta Astronautica

IS - 1-2

ER -

In-flight Quality and Accuracy of Attitude Measurements from the CHAMP Advanced Stellar Compass

Abstract

Access to Document

OpenUrl availability

Fingerprint

Cite this