摘要
介绍了卫星导航系统导航电文的内容组成与结构特点,在考虑导航电文结构设计中影响导航电文性能的各种因素的基础上,提出了导航电文结构性能评估的一般准则与方法。作为应用实例,对GPS和GLO-NASS导航电文结构的性能作了初步分析和评估。
Based on the analysis of the factors which have influence on performance of navigation message and must be considered in the navigation message structure design, some criterion and methods of the performance evaluation of the structure of navigation message are proposed. The criterion and methods include the total number of data bits, the time to first user receiver position fix, the time for user receiver to acquire a set of almanac data, the flexibility and expansibility of navigation massage structure and the utilization ratio of the satellite communication channel. As an application example, the navigation message structure performances of GPS and GLONASS are analyzed.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2008年第5期512-515,共4页
Geomatics and Information Science of Wuhan University
基金
国家自然科学基金资助项目(40774001
40474001)
