嵌入式高精度GPS异地时间测量系统的设计  

Improvement and realization of long-distance time measurement with embedded high precision GPS system

作　　者：张杨敏[1] 郭勇[1] 谢兴红[1] 

机构地区：[1]成都理工大学信息工程学院,四川成都610059

出　　处：《电子技术应用》2010年第2期19-22,共4页Application of Electronic Technique

摘　　要：通过GPS授时系统实现异地时间测量的方法。利用GPS可靠性、高精度、全球覆盖等特点,辅以ARM系统高性能低成本的优势,改进并实现了基于ARM的嵌入式GPS异地时间测量系统,使异地时间测量精度和性价比明显提高。对系统存在的影响精度部分进行了分析和测试并做出相应改进,为进一步提高精度提供了理论和工程依据。This paper researche the method and implementation of long-distance time measurement by the GPS timing system, made full use of GPS in reliability, high accuracy, global coverage and other characteristics, as well as ARM system supplemented with high-performance low-cost advantages. So portable time measurement instrument accuracy and cost-effective increased signifi- cantly.After that, for the impact of precision of the current system, an analysis and testing of component was taken, which referred some advice on further improve basis of the accuracy both in theoretical and engineering.

关 键 词：时间同步 GPS PPS 高精度 

分 类 号：TB9[一般工业技术—计量学] U463.6[机械工程—测试计量技术及仪器]