基于GPS的高稳定频率源设计与实现  

Design and implementation of high-stability frequency source based on GPS

作　　者：张书南[1] 蒋宇中[1] 苏凯[1] 刘月亮[1] 

机构地区：[1]海军工程大学电子工程学院,湖北武汉430033

出　　处：《电子技术应用》2012年第1期77-80,共4页Application of Electronic Technique

摘　　要：介绍了一种基于GPS的高稳定频率源设计方法。它利用GPS秒脉冲具有良好的频率准确度和长期稳定度的特点,结合VCXO、DSP和CPLD等构成控制电路,通过设计具有初级智能的控制算法,对VCXO输出频率信号进行统计、分析和控制,消除了GPS信号的短期抖动,最终实现了具有高稳定度的频率输出。实验结果表明,该系统实现了设计的功能和要求,能稳定工作。This paper introduces design of high-stability frequency source based on GPS. The pulses per second signals of GPS which has very good accuracy and long-stability with VCXO （Voltage Control Crystal Oscillator）,DSP （Digital Signal Processor） and CPLD （Complex Programmable Logic Device） to form a control circuit. Through the design of intelligent control algorithms with primary, which is used for the statistical analysis and control of the output frequency of VCXO. The short-term jitter of GPS signal is sieved .The frequency source finally output high-stability frequency. The experiment result shows that the system meets the functions and the requirements of design and works reliably.

关 键 词：GPS 秒脉冲 VCXO 频率源 

分 类 号：TP302[自动化与计算机技术—计算机系统结构]