CAJ | 학술논문

卫星导航系统本身具有时间传递性能,其时间传递技术包括接收机单点定位授时、两站点卫星共视和基于差分技术的相对时间同步,为分布式电子信息系统的固定站点和运动平台间的时间同步提供了高精度的时间同步手段.本文针对卫星导航多种时间传递模式的原理和性能展开分析,对 GPS、GLONASS、GALILEO 和 Compass 的时间传递性能进行对比分析.利用两套具有多系统多星座共视的载波相位时间传递技术的时间传递设备开展了长基线时间传递试验,试验结果表明利用卫星导航能够实现的1000km长基线时间传递的最佳精度可达5ns.
위성도항계통본신구유시간전체성능,기시간전체기술포괄접수궤단점정위수시、량참점위성공시화기우차분기술적상대시간동보,위분포식전자신식계통적고정참점화운동평태간적시간동보제공료고정도적시간동보수단.본문침대위성도항다충시간전체모식적원리화성능전개분석,대 GPS、GLONASS、GALILEO 화 Compass 적시간전체성능진행대비분석.이용량투구유다계통다성좌공시적재파상위시간전체기술적시간전체설비개전료장기선시간전체시험,시험결과표명이용위성도항능구실현적1000km장기선시간전체적최가정도가체5ns.
GNSS has the capability of time transfer. The technologies used for the time transfer include time transfer of precise point positioning, time transfer using common view method, relative time synchronization with DGNSS. The methods are used to achieve high precise time synchronization between fixed station and mobile platform of a typical distributing system. By analyzing the principle and capability of several GNSS time transfer modes, the paper gives a comparison and analysis of the time transfer capability of GPS, GLONASS, GALILEO and Compass. Two sets of time transfer systems using carrier phase time transfer technology of multiple systems and multiple satellites’ common view are used to make an experiment of long baseline time transfer. The result shows that the precision of the carrier-phase time transfer using all the satellites’ common-view is less than 5ns within 1000km of long baseline.