摘要
基于卫星导航系统定位授时原理,分析了用户机时钟与系统时间钟差对授时精度的影响,提出了一种用于提升用户机授时精度的时钟准确度校正方法,即:根据系统时间良好的长稳特性对用户机时钟的准确度进行校正,减小用户机时钟与系统时间钟差,并提升钟差修正的精度,从而达到提升用户机授时精度的目的。通过实验验证了该方法的可行性与有效性。
Based on positioning and time service principle of satellite navigation, this pa- per analysed the influence on time service precision by user receiver＇s clock and system time clock offset, put forward a sort of clock accuracy correction method used to enhance time service precision of user receiver, namely： proceeded clock accuracy correction of user receiv- er＇s clock according to the good long-term stability characteristics of system time, to reduce user receiver＇s clock and system time offset and enhance the correction precision of clock off- set, so as to beat the target of enhancing time service precision of user receiver. The feasibil- ity and effectiveness of the proposed method were verified by experiments.
出处
《全球定位系统》
CSCD
2015年第5期30-33,共4页
Gnss World of China
关键词
时钟准确度
钟差
授时精度
校正
Clock accuracy
clock offset
time service precision
correction
