Method for acquiring day frequency stability of atomic clock remote calibration system

A remote calibration, atomic clock technology, applied in radio-controlled timers, instruments, etc., can solve problems such as measurement and measurement that do not include frequency stability, and achieve the effect of simple and reliable methods

Active Publication Date: 2015-05-13
SHANGHAI INST OF MEASUREMENT & TESTING TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, the current calibration project for remote calibration of atomic frequency standard devices does not include the measurement of frequency stability

Method used

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  • Method for acquiring day frequency stability of atomic clock remote calibration system
  • Method for acquiring day frequency stability of atomic clock remote calibration system
  • Method for acquiring day frequency stability of atomic clock remote calibration system

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Embodiment Construction

[0032] The specific implementation manner of the present invention will be described in more detail below with reference to schematic diagrams. Advantages and features of the present invention will be apparent from the following description and claims. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

[0033] Such as figure 1 As shown, the present invention provides a remote calibration system for an atomic clock (also referred to as a remote calibration system for an atomic frequency standard device), which has a calibration party and a calibration party, and a first antenna (not shown), The first common-view receiver, the first atomic clock (that is, the atomic clock to be calibrated) and the computer are provided with a second antenna (not shown), a second common-view receiver, a second atomic clock (that i...

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Abstract

The invention provides a method for acquiring day frequency stability of an atomic clock remote calibration system. The method comprises the following steps: respectively setting an antenna, a common-view time receiver, a computer and an atomic clock on a calibrating party and a calibrated party to form the atomic clock remote calibration system; starting the common-view time receiver and the atomic clock of the calibrating party and the calibrated party; operating for at least three days and storing a CGGTTS standard formatted file; selecting sampling time point in the day according to a principle that absolute value calculation is main and flexible adjustment is complementary; selecting satellite data of the sampling time point of the same satellite which appears in the CGGTTS standard formatted file in all N days; subtracting REFGPS values in the satellite data of the calibrating party from the REFGPS values in the satellite data of the calibrated party in any day from the first day to the nth day to acquire time difference data on that day; acquiring the day frequency stability by using allan variance. The method is simple and reliable, and can replace a traditional carrying clock measuring method.

Description

technical field [0001] The invention relates to the field of time-frequency calibration, in particular to a method for obtaining the day-frequency stability of an atomic clock remote calibration system. Background technique [0002] With the development of science and technological progress, time-frequency measurement has become one of the most important measurement activities. The research on the measurement calibration method of time-frequency equipment has also become a hot issue in the field of measurement today. The calibration of traditional atomic frequency standard devices (also known as atomic clocks) mostly adopts the method of sending the equipment for inspection, that is, the equipment is sent to the upper-level metrology department, and the metrology department completes the verification and calibration according to the corresponding verification regulations. However, due to its own characteristics, the time-frequency measurement standard can avoid step-by-step...

Claims

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Application Information

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IPC IPC(8): G04R20/04
CPCG04R20/04
Inventor 徐亮胡立志董莲胥婕马志超张裕李明来磊蔡青
Owner SHANGHAI INST OF MEASUREMENT & TESTING TECH
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