电讯技术Issue(2)：187-192,6.DOI:10.3969/j.issn.1001-893x.2015.02.013
载波频率号提取算法对箭载GLONASS速度计算的影响
Effect of Carrier Frequency Number Picking-up Algorithm on Rocket GLONASS Velocity Calculation
饶爱水 1张龙 1王振平 1汪毅1
作者信息
- 1. 中国卫星海上测控部，江苏 江阴214431
- 折叠
摘要
Abstract
According to the principle of velocity determination using Global Navigation Satellite System (GLONASS),the effect of carrier frequency number picking-up algorithm on rocket GLONASS velocity determination is studied and it is found that the precision of velocity becomes worse if the algorithm of fre﹣quency number is inaccurate,and the error of precision caused by inaccurate frequency number is 1/2850 to 1/220 of the object’ s velocity. Four algorithms are designed and tested by using the trial data of rocket launching. The result shows that the the algorithm of calculating carrier frequency number by satellite num﹣ber and calculating carrier frequency number by reserve bits can acquire an accurate result,and the algo﹣rithm of immediately calculating carrier frequency number and abandoning reserve string can acquire an in﹣accurate resul. The algorithm of calculating carrier frequency number by reserve bits has the least time of first velocity measurement,and gets 30 seconds better compared with that of the algorithm of calculating carrier frequency number by satellite number. The error of velocity precision caused by wrong frequency number is consistent with theoretical analysis.关键词
GLONASS/导航电文/频道号/速度精度/运载火箭/实时定位Key words
GLONASS/navigation message/frequency number/precision of velocity/carrier rocket/realtime positioning分类
信息技术与安全科学引用本文复制引用
饶爱水,张龙,王振平,汪毅..载波频率号提取算法对箭载GLONASS速度计算的影响[J].电讯技术,2015,(2):187-192,6.
