星敏感器误差标定方法

2011 2nd International Conference on Control, Instrumentation and Automation (ICCIA) Pub Date : 2011-12-01 DOI:10.1109/ICCIAUTOM.2011.6183916

Lu Jing-hui, Wang Hong-li, Wen Tao, Zhan Qiao-Lin

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引用次数: 3

摘要

为了降低各种误差因素的影响，提高指向精度，提出了一种星敏感器误差定标算法。在对星敏感器典型误差进行分析和归纳的基础上，建立了星敏感器的理想模型和真实模型。利用最小二乘最优估计方法和星表中星距不变性原理，分离出了标定误差，如视径偏移、光学系统焦距不准确、焦平面倾斜和旋转、光学透镜畸变等。仿真结果表明，由于没有理想的光学模型而引起的误差可以估计出来，从而提高了标定精度。

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Error calibration method for star sensor

To reduce the effects of various error factors and improve the pointing precision, a star sensor error calibration algorithm was presented. Based on analysis and generalizing the typical error of star sensor, the ideal and real model of star sensor were constructed. The calibration errors such as the bore-sight offsets, inaccurate focal length of optical system, plane tilt and rotating of focal plane, and optical lens distortion etc, which were separated by the least squares optimal estimation method and the principal of star distance invariability in star catalog. The simulation results indicate that the error caused by not having an ideal model and calibration of the optics could be estimated, the calibration accuracy is improved.

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来源期刊

2011 2nd International Conference on Control, Instrumentation and Automation (ICCIA)

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