摘要
星敏感器是高精度姿态测量部件，广泛应用于各种航天器中，作用对象是空间恒星，成像过程涉及光学系统、ＣＣＤ探测器及前端信号处理系统，最后输出惯性坐标系或地心坐标系下的姿态角。本文完成了对星敏感器成像过程的模拟，研制了星敏感器星像模拟软件，为星敏感器及其他类似航天器的性能评价提供了有效手段。
Star tracker is a high accurate attitude measuring instrument used in various spacecrafts. The operation process of the star tracker consists of stars imaging on focal plane through optical lens, star light-to-charge conversion with a CCD sensor, preprocessing of star signal for eliminating noise, centroid calculation with sub-pixel algorithms, and at last the attitude computing and coordination conversion. In this paper, the operation process simulation is implemented except the attitude computing. Some simulation results are given in the paper. The method used in the paper is useful for evaluation of star tracker performance. This software can be used in both various space sensors development and astronomical research. But, if it is used in astronomical research, atmospheric effect must be taken into account.
出处
《光学精密工程》
EI
CAS
CSCD
2000年第3期208-212,共5页
Optics and Precision Engineering
