The system can be used in stratum II time/frequency standards, such as site syntonization systems, event measurement, etc. 本系统可以当作第二层时频标准，应用于频率同步及精密量测等工作场所或系统之中。
A low-cost, highly-accurate GPS carrier phase frequency syntonization system (GPS carrier phase-disciplined oscillator, GPSCDO) based on a single-frequency receiver is presented. 摘要:本论文介绍利用单频接收机及GPS载波相位观测量所组成一低成本且高精度的频率同步系统（GPS载波相位训练振荡器）。
High-accuracy frequency measurement based on frequency and period measuring method integration with software syntonization and two switch points 同步双界点测频测周集成高准确度频率测量
