摘要
在介绍X射线源和X射线探测器、准直器的基础上,重点描述了应用X射线源测量航天器姿态参数的原理和方法。对X射线星扫描仪的结构、扫描观测X射线源方法和矩形准直器响应函数等做了介绍,较详细地论述了应用单准直器X射线星扫描仪和差分准直器X射线星扫描仪确定航天器姿态参数的测量模型,并进行了二者间的比较和分析。简单讨论了X射线星扫描仪测量建模和应用测量模型拟合航天器姿态参数的算法问题。最后,对采用编码孔径系统确定航天器姿态参数的方法做了概括性介绍。
Following a brief introduction of X-ray sources and X-ray source observational instrument system with detector and collimator, the fundamentals of spacecraft attitude determination using X-ray sources are described in some details. The configuration of X-ray star scanner, the observation of scanning over suitable X-ray source and the response function of rectangular collimator are introduced. A detailed description is given on modeling the signals from scanning observation of X-ray star scanner, and the models for single collimator X-ray star scanner and for differential collimator X-ray star scanner are compared and analyzed. The algorithm is briefly discussed on fitting model parameters of spacecraft attitude with signal curve obtained by scanning over an X-ray source using deferential collimator X-ray star scanner. Finally, the spacecraft attitude determination using coded aperture system is reviewed.
出处
《时间频率学报》
CSCD
2009年第1期70-80,共11页
Journal of Time and Frequency
基金
国家自然科学基金资助项目(0813ZK1201)
中国科学院方向性资助项目(0806YC1201)
关键词
X射线源
X射线星扫描仪
航天器姿态测量
X-ray sources
X-ray star scanner
spacecraft attitude determination
