宇航计测技术

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芯片级原子钟数字温控系统设计

胡二猛1;刘瑞元1;赵建业1   

  1. 1、北京大学信息科学技术学院电子系,北京 100871
  • 出版日期:2017-08-24 发布日期:2017-08-24
  • 作者简介:胡二猛(1992-),男,硕士研究生,主要研究方向:芯片级原子钟。
  • 基金资助:
    国家自然科学基金(61535001)

Design of Digital Temperature Control System for Chip-scale Atomic Clock

HU Er-meng1;LIU Rui-yuan1;ZHAO Jian-ye1   

  1. 1、Department of Electronics, School of Electronics Engineering and Computer Sciences, Peking University, Beijing 100871,China
  • Online:2017-08-24 Published:2017-08-24

摘要: 随着美国国防部先进项目研究局(Defence Advanced Research Projects Agency,DARPA)对微型定位导航授时技术的提出以及无人驾驶技术的发展,芯片级原子钟的市场越来越受到重视。稳定度是衡量芯片级原子钟性能的关键指标,而温度又是影响芯片级原子钟稳定度指标的重要因素,因此高精度的温控系统是芯片级原子钟稳定度的保障。设计了一种高精度的数字温度控制系统,控温精度为2mK。经过对比测试,使用该系统的芯片级原子钟稳定度较以前有了较大的改善,千秒稳定度从7.57×10-12提高到4.99×10-12,处于世界先进水平。

关键词: 芯片级, 原子钟, 温度, 精度, 数字控温, 稳定度

Abstract: With the proposal of the Micro-PNT(Micro-Technology for Positioning, Navigation and Timing)by United States Department of Defense Advanced Projects Research Agency(DARPA) and the development of unmanned technology, the market of chip-scale atomic clock has attracted much attention.Stability is a key parameter of the performance of chip-scale atomic clock, which is affected by the accuracy of temperature control, so a high accuracy temperature-control system is very essential to the stability of chip-scale atomic clock.  A digital temperature-control system with high accuracy is designed,and its precision is 2mK. The test results show, the stability of chip-scale atomic clock is greatly improved from 7.57×10-12to 4.99×10-12, which is in a world level.

Key words: Chip scale, Atomic clock, Temperature, Accuracy, Digital temperature control, Stability