Measurement method and measurement device

A measurement method and technology of a measurement device, applied in the field of high-precision frequency measurement, can solve the problems of measurement error, increased burden of measurement work, etc.

Inactive Publication Date: 2017-08-29
JIANGHAN UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this way, on the one hand, it will increase the burden on the measurement work; on the other hand, it may lead to measurement errors

Method used

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  • Measurement method and measurement device

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Embodiment 1

[0029] This embodiment relates to a measuring device, according to figure 1 As shown, including external reference source, measurement instrument group, compensation detection source and central processing unit. Wherein, the external reference source is a high-stability atomic clock, which can be an H clock, a Cs clock, etc., or a GPS timing signal, which is used as an external clock reference for the measuring instrument group. The specific structures and functions of the measuring instrument group and the compensation detection source are all existing technologies, and will not be repeated here.

[0030] The compensation detection source is suitable for outputting a compensation detection signal whose stability index is not lower than the stability index of the signal output by the measured frequency source to the measuring instrument group.

[0031] The measuring instrument group is adapted to receive the measured signal and the compensated detection signal output by the f...

Embodiment 2

[0046] This embodiment is a measurement method proposed on the basis of the hardware of the device in the first embodiment, including the following steps,

[0047] The measuring instrument group simultaneously measures the compensation signal output by the compensation detection source and the measured signal output by the measured frequency source under the clock reference of the external reference source, and outputs the measurement results to the central processing unit;

[0048] When there is a jump point in the measurement result, the central processing unit performs the following analysis on the data of the measurement result:

[0049] i. When the test results of the measured frequency source and the compensation detection source jump at the same time, it is judged that there is a problem with the measuring instrument group or the external reference source, and the test information is output;

[0050] ii. When the measurement result of the frequency source under test has...

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Abstract

The present invention relates to a measurement method and a measurement device. The method and the device are based on a compensation detection source, a measurement instrument unit and a central processing unit, the stability index of the compensation signals output by the compensation detection source is not lower than the stability index of the signals output by a detected frequency source; and the measurement instrument unit performs measurement of the compensation signals output by the compensation detection source and the detected signals output by the detected frequency source under the clock reference of an external reference source and outputs a measurement result to the central processing unit; and when the measurement result has jump points, the central processing unit perform jump point analysis of the data of the measurement result. The measurement method and measurement device can rapidly inquire the reasons of generation of jump points and allow the measurement result to be more reasonable.

Description

technical field [0001] The invention relates to the field of high-precision frequency measurement, in particular to a measurement method and a measurement device. Background technique [0002] The signal frequency stability index reflects the stability of the output signal frequency of a frequency signal source. The traditional time domain test technology includes the measured frequency source, external reference source, measuring instrument, central processing unit module, counter and phase comparator and other equipment. During the specific measurement of these peripheral measurement equipment, the researchers found that there were some abnormal jump points in the measurement data. The so-called "jump point" refers to the abnormal measurement results, such as: the stability index of a measured frequency source is 5E-12 / second At a certain moment, the test result shows that the measurement frequency has a relative value of 5E-11 deviation, then there are three possibilities...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R23/02
CPCG01R23/02
Inventor 兰慧
Owner JIANGHAN UNIVERSITY
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