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Spin-Axis Attitude Estimation by a Controlled Correlation Method

机译：自旋轴姿态的受控相关估计

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摘要

One considers the most common optical attitude sensor system consisting of sun and infrared sensors used on spinning spacecraft in geostationary transfer orbit. Particularly the infrared sensors are subject to systematic bias errors that affect attitude estimation accuracy. A procedure that employs a very limited sample of measurements is presented, such that each bias error separately occurs only once and thereby can be considered as a random error on its own. This approach is applied to the inertial and body spin-axis estimation separately for two meteorological satellites in geostationary and intermediate transfer orbits. Attitudes obtained from the orbit determination assessment of the direction of larger velocity increments imparted to these satellites by means of propulsion engines of the satellites themselves are used to check the accuracy performance of the inertial attitudes estimated by means of the new method. The validity of the estimation of the mean spin-axis orientation in the body reference system is verified by looking at the resulting accuracy improvement of the inertial attitude relying on the corrected body spin-axis direction. In the two missions considered, high inertial attitude precisions of the order of 0.1 deg or better were obtained in this way.
机译：人们认为最常见的光学姿态传感器系统由对地静止转移轨道上旋转的航天器上使用的太阳和红外传感器组成。尤其是红外传感器容易受到影响姿态估计精度的系统性偏差的影响。提出了使用非常有限的测量样本的过程，使得每个偏差误差仅单独发生一次，因此可以被认为是其自身的随机误差。该方法分别应用于静止和中间转移轨道上的两颗气象卫星的惯性和身体自旋轴估计。从通过卫星本身的推进引擎赋予这些卫星的较大速度增量的方向的轨道确定评估获得的姿态用于检查通过新方法估算的惯性姿态的精度性能。通过查看依赖于校正后的人体旋转轴方向的惯性姿态的精度提高，可以验证人体参考系统中平均旋转轴方向估计的有效性。在考虑的两个任务中，以此方式获得了约0.1度或更高的高惯性姿态精度。

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  • 来源
    《Journal of Spacecraft and Rockets》 |2005年第1期|p.58-65|共8页
  • 作者

    Luc Fraiture;

  • 作者单位

    ESA, D64293 Darmstadt, Germany;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 航空;
  • 关键词

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