摘要
星等是卫星重要的光学特征之一,为实时、精确得到卫星的星等,在对卫星的探测中,探测系统首先跟踪测量目标卫星,然后对卫星飞过的附近天区的已知恒星进行测量,将CCD输出的卫星与已知恒星的灰度值进行比对得到卫星的星等,并利用同样的方法将两颗已知恒星的灰度值进行对比对该方法用于卫星星等测量精度进行了评估。实验结果表明,实时比对法用于卫星星等测量的精度为0.27星等,是一种有效的卫星星等测量方法。
The magnitude is one of the important optical characteristics of satellite. To obtain the real time and precision satellite magnitude, the targeted satellite is tracked and measured and then the known stars near the orbit of the satellite are measured. The satellite magnitude is obtained by comparing the gray values of satellite and known star output by CCD in the satellite exploration, and the precision is obtained by comparing the values of two known stars in the same way. The experiment result indicates that the precision of the real time comparison is 0.27my and the real time comparison is an effect method for measuring satellite.
出处
《光学技术》
EI
CAS
CSCD
北大核心
2007年第3期473-475,共3页
Optical Technique
关键词
光学测量
卫星星等
比对法
精度评估
optical measurement
satellite magnitude
comparison method
precision evaluating
