基于GPS驯服铷钟的频率校准系统设计

Design of a Frequency Calibration System Based on GPS Disciplined Rubidium Clock

定期对GNSS接收机的外部频率源进行校准是保证定位精度的重要措施。介绍了GPS驯服铷钟频率校准系统的工作原理和硬件组成,通过频率校准实验验证了该系统达到了较好的长期频率准确度和短期频率准确度指标要求,保证了被校准频率源的精确度。

Periodical calibration of frequency standard for GNSS receiver is an important measure to guarantee the positioning precision. The working principles and hardware structure of frequency calibration system based on GPS disciplining Rubidium clock are introduced. The frequency calibration experiment validates that this system has achieved the preferable long frequency accuracy and short frequency accuracy, which ensures the calibrated frequency standard precision.