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JJF 1206-2018 English PDF

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JJF 1206-2018: Calibration Specification for Remote Calibration of Time and Frequency Standards
Status: Valid

JJF 1206: Evolution and historical versions

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
JJF 1206-2018	English	509	Add to Cart	4 days [Need to translate]	Calibration Specification for Remote Calibration of Time and Frequency Standards	Valid	JJF 1206-2018
JJF 1206-2008	English	719	Add to Cart	4 days [Need to translate]	Calibration Specification for the Remote Calibration for Frequency Standard and Digital Clock	Obsolete	JJF 1206-2008
JJF 1206-1990	English	199	Add to Cart	2 days [Need to translate]	O.T.N.of secondary standard of Kr86 Wavelength	Obsolete	JJF 1206-1990

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Basic data

Standard ID	JJF 1206-2018 (JJF1206-2018)
Description (Translated English)	Calibration Specification for Remote Calibration of Time and Frequency Standards
Sector / Industry	Metrology & Measurement Industry Standard
Classification of Chinese Standard	A57
Word Count Estimation	22,244
Date of Issue	2018-12-25
Date of Implementation	2019-06-25
Older Standard (superseded by this standard)	JJF 1206-2008
Regulation (derived from)	State Administration of Markets, Announcement No.34 of 2018
Issuing agency(ies)	State Administration for Market Regulation

JJF 1206-2018: Calibration Specification for Remote Calibration of Time and Frequency Standards

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Calibration Specification for Remote Calibration of Time and Frequency Standards National Metrology Technical Specification of the People's Republic Time and frequency standard remote calibration specification Published on.2018-12-25 2019-06-25 implementation State Market Supervisory Administration released Time and frequency standard remote calibration specification Replace JJF 1206-2008 Focal Point. National Time Frequency Measurement Technical Committee Main drafting unit. China Institute of Metrology Participated in the drafting unit. Beijing Radio Measurement and Testing Institute Beijing Jiaotong University This specification entrusts the National Time and Frequency Measurement Technical Committee to explain The main drafters of this specification. Liang Kun (China Institute of Metrology) Zhang Aimin (China Institute of Metrology) Participate in the drafters. Yang Jun (Beijing Radio Measurement and Testing Institute) Wang Jian (Beijing Jiaotong University)

Introduction (II) 1 Scope (1) 2 References (1) 3 Terms and units of measurement (1) 3.1 Time stability (1) 3.2 GNSS (1) 3.3 GNSS time frequency transmission (1) 3.4 GNSS code base time frequency transfer (2) 3.5 GNSS carrier phase time frequency transmission (2) 3.6 International Time Frequency Advisory Committee GNSS Time Delivery Standard Format (2) 3.7 Satellite two-way time frequency transmission (2) 3.8 Fiber Time Frequency Transmission (2) 3.9 Time Transfer Link Calibration (2) 4 Overview (2) 5 Measurement characteristics (2) 5.1 Time Standard (2) 5.2 Frequency Standard (3) 6 Calibration conditions (3) 6.1 Time and frequency transfer device environmental conditions (3) 6.2 Measurement standards and other equipment (3) 7 Calibration items and calibration methods (3) 7.1 Calibration Project (3) 7.2 Calibration method (4) 8 Calibration result expression (7) 9 re-study interval (7) Appendix A Original Record Format (8) Appendix B Calibration Certificate (inside page) format (10) Appendix C Example of Calibration Uncertainty Evaluation (11)

Introduction

This specification is based on JJF 1071-2010 "Rules for the preparation of national metrological calibration specifications" for JJF 1206-2008 Line revision. Compared with JJF 1206-2008, in addition to editorial changes, the main technical content changes are as follows. --- Expanded the calibration method for multiple calibrated time and frequency standards (see 7.1). --- According to JJG2007-2015 "Time and Frequency Measuring Instrument Calibration System Table", removed in the calibration project The “Frequency Accuracy” item adds the relevant content of the “Frequency Deviation” item (see 7.1). --- Added "Frequency Stability" item to the calibration project (see 7.1). --- Removed the "clock rate" item in the calibration project (see 7). --- Removed the "time deviation and effective number of clock rates" in the calibration project (see 7). --- Added "Time Stability" item to the calibration project (see 3.1 and 7.1). ---GPS common view method extended to GNSS time frequency transfer method (see 3.3 and 7.2). --- Clear and compatible based on more available GNSS systems (US Global Positioning System (GPS) systems, China's Beidou System (BDS), Russia's GLONASS (GLONASS), Europe's Galileo System (Galileo)) GNSS time-frequency transmission method for measurement (see 3.2~3.6, 4 and 7.2). --- Clear and compatible GNSS code base time frequency based on different measurement signals (ranging code and carrier phase) Transfer method and carrier phase time-frequency transfer method (see 3.4, 3.5 and 7.2). --- Clear and compatible GNSS time-frequency transfer data processing mode. GNSS common view and GNSS full view (see 3.3 and 7.2.1.1). The previous versions of this specification were released as follows. ---JJF 1206-2008. Time and frequency standard remote calibration specification

1 Scope

This specification applies to. time calibration of time standard and remote calibration of time stability; frequency bias of frequency standard Remote calibration of difference, frequency stability and frequency drift rate.

2 reference files

This specification refers to the following documents. JJF 1001-2011 General Measurement Terms and Definitions JJF 1180-2007 Time frequency measurement terminology and definition JJF 1403-2013 Global Navigation Satellite System (GNSS) Receiver (Time Measurement) Calibration Specification JJG2007-2015 time frequency measuring instrument verification system table GB/T 19391-2003 Global Positioning System (GPS) terms and definitions International Time Frequency Advisory Committee (CCTF) Technical Guide for Standardization of GPS Time Receiver Software (TechnicalDirectivesforStandardizationofGPSTimeReceiverSoftware,.1994) Standardization of GPS and GLONASS Time Transfer,.1996 (AcontributiontotheStandardization ofGPSandGLONASSTimeTransfers) CGGTTS 2E Edition. GNSS Time Transfer Extension Standard,.2016 (CGGTTS-Version2E.an extendedstandardforGNSSTimeTransfer) For dated references, only dated versions apply to this specification; undated quotations The latest version (including all amendments) applies to this specification.

3 terms and units of measure

3.1 time stability The degree of random variation of the time standard in a certain time interval, depending on the sampling (average) time Similarly, it is usually expressed using the time standard deviation (TDEV), which is calculated based on the modified Alan standard deviation. 3.2 GNSS GlobalNavigationSateliteSystem The collective name for GNSS, including the US Global Positioning System (Global Positioning System, GPS), Russia's GLONAS system (GLObalNAvigationSateliteSystem, GLONASS), China's BeiDouNavigationSatelite System (BDS) and the European Union's Galileo system (EuropeanGlobalNavigationSateliteSystem, Galileo). 3.3 GNSS time frequency transfer GNSStimeandfrequencytransfer Time-frequency transmission using GNSS. Passing both parties to configure GNSS time frequency transfer device (receive Machine), simultaneously measuring the respective reference time and GNSS system time (such as GPST, GLONASST, BDT or The difference between GST) is calculated by data interaction to obtain the time difference/frequency difference. Observation by both time frequency transfer devices The common satellite measurement method is the Common-View (CV) method, which uses both GNSS time-frequency transmissions.

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