Method and system for measuring time deviation
A technology of time deviation and measurement method, which is applied in time division multiplexing systems, electrical components, multiplexing communication, etc. The effect of small time complexity
Active Publication Date: 2019-11-19
电信科学技术第五研究所有限公司
View PDF3 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The measurement process is relatively cumbersome and the measurement cost is high. It is difficult to measure the TDEV indicators of the time and frequency equipment in the synchronization network in real time in the portable measurement instrument based on the embedded platform.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0029] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.
[0030] Any feature disclosed in this specification, unless specifically stated, can be replaced by other alternative features that are equivalent or have similar purposes. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.
[0031] A method for measuring time deviation, comprising defining the initial length of the observation time window, calculating the time deviation samples under the initial window length; increasing the length of the observation time window by one bit, and calculating the time deviation samples under the window length; repeating the previous step , until the time deviation samples under the length of the threshold number window of the observation time window are calculated.
[0032] The left and rig...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a time deviation measuring method, which comprises the following steps of defining initial window length of an observation time window and computing a time deviation sample under the initial window length; increasing the length of the observation time window by one bit and computing a time deviation sample under the window length; and repeating the previous step until the time deviation sample under the window length of the threshold number of the observation time window is worked out. According to the method, a boundary decision-making data replacement method is adopted, so that the time complexity of computation of the time deviation in different observation time windows is greatly reduced; a logarithmic coordinate equal interval method is adopted for the size ofthe observation time window, the operation times can be effectively reduced while the integrity of a time deviation curve is guaranteed, and the real-time measurement of the time deviation can be directly carried out in a portable tester table based on an embedded platform.
Description
technical field [0001] The invention relates to the technical field of synchronous network communication, in particular to a method and system for measuring time deviation. Background technique [0002] In the field of measurement and control systems and synchronization network communications, it is often necessary to use time-frequency servers to provide timing and synchronization time scale signals for equipment. There are many time-frequency stability evaluation parameters of the time-scale signal, among which the time deviation (TDEV) is one of the important indicators to evaluate the long-term stability of the time-scale signal. The estimation of TDEV is based on the time error measurement data between the reference clock and the measured clock. It includes two parts: one is the collection of time error (TE) sample data, and the other is the calculation and processing of TE sample data. TDEV calculation method The pros and cons of will directly affect the confidence an...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H04J3/06
CPCH04J3/0635H04J3/0682
Inventor 高灵峰
Owner 电信科学技术第五研究所有限公司