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JJF 1180-2007 English PDF

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JJF 1180-2007: Glossary and Definition of Time and Frequency Metrology
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Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
JJF 1180-2007	English	549	Add to Cart	4 days [Need to translate]	Glossary and Definition of Time and Frequency Metrology	Valid	JJF 1180-2007

PDF similar to JJF 1180-2007

Standard similar to JJF 1180-2007

GB/T 3222.1 JJF 1234 JJF 1396 JJF 1900 JJF 1901 JJG 1180

Basic data

Standard ID	JJF 1180-2007 (JJF1180-2007)
Description (Translated English)	Glossary and Definition of Time and Frequency Metrology
Sector / Industry	Metrology & Measurement Industry Standard
Classification of Chinese Standard	A57
Classification of International Standard	17.080
Word Count Estimation	21,292
Date of Issue	2007-06-14
Date of Implementation	2007-09-14
Regulation (derived from)	AQSIQ Announcement No. 95 of 2007
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine

JJF 1180-2007: Glossary and Definition of Time and Frequency Metrology

---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.
Glossary and Definition of Time and Frequency Metrology People's Republic of China National Metrology Technical Specifications Time and frequency measurement terminology and definitions Posted 2007-06-14 2007-09-14 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Time and frequency measurement terminology and definitions gy This specification by the State Administration of Quality Supervision, Inspection and Quarantine, 2007 June 14 ratification and From September 14, 2007 into effect. Focal point. the National Commission on Time and Frequency Measurement Technology Drafting units. China Institute of Metrology This specification shall be interpreted by the focal point The main drafters of this specification. Ma Fengming (China Institute of Metrology) Drafters participate. Gao Xun (China Institute of Metrology) Zhang Aimin (China Institute of Metrology)

1 Technical basis (1) 1.1 time scale (time scale) (1) Atomic 1.2 seconds (1) 1.3 mean solar seconds (1) A world class 1.4 (UT1) (1) 1.5 International Atomic Time (TAI) (1) 1.6 Coordinated Universal Time (UTC) (1) 1.7 leap seconds (1) 1.8 Beijing (1) 1.9 Julian Day (JD) (2) 1.10 revised Julian Day (MJD) (2) 1.11 epoch (2) 1.12 Time and Frequency reference (2) 1.13 frequency reference when cesium atomic fountain (2) 1.14 Digital Clock (2) 1.15 atomic clock (2) 1.16 quartz (2) 1.17 White Noise (2) 1.18 flicker noise (2) 1.19 Shiraai noise (2) 1.20 flash phase noise (2) 1.21 white frequency noise (3) 1.22 flash frequency noise (3) 1.23 random walk frequency noise (3) Time 2 (3) Time 2.1 (3) Interval 2.2 (3) 2.3 Delay (3) 2.4 Time interval generator (3) 2.5 the time interval counter (3) 2.6 time base (3) 2.7 Gate time (3) Stopwatch 2.8 (3) 2.9 Mechanical stopwatch (3) 2.10 quartz electronic stopwatch (4) 2.11 electrical stopwatch (4) 2.12 milliseconds instrument (4) 2.13 Time Calibrator (4) 2.14 stopwatch Calibrator (4) 2.15 electrical stopwatch Calibrator (4) 2.16 calibration instrument (4) 2.17 clock error (4) 2.18 clock rate (4) 2.19 days difference (4) Time deviation 2.20 (4) 2.21 Time Coding (5) 2.22 Time Comparison (5) Time synchronization 2.23 (5) 2.24 Synchronization uncertainty (5) Transfer time 2.25 (5) 2.26 Timing radio station (5) 2.27 TV time and frequency (5) 2.28 granted network (5) 2.29 Network Time Protocol (5) 2.30 delegated telephone (5) 2.31 Global Positioning System (GPS) (5) 2.32 Global Navigation Satellite System (GLONASS) (6) 2.33 GPS common-view method (6) 2.34 two-way satellite method (6) 2.35 carrier phase measurements (6) 2.36 times the standard deviation (6) 2.37 Standard Time (6) 2.38 The maximum time interval error (MTIE) (6) 2.39 Time Jitter (7) 2.40 Time drift (7) Frequency 3 (7) 3.1 Frequency (7) Cycle 3.2 (7) Phase 3.3 (7) 3.4 phase difference (7) 3.5 phase shift (7) 3.6 Frequency Standard (7) 3.7 atomic frequency standard (7) 3.8 cesium beam atomic frequency standard (7) 3.9 hydrogen atom frequency standard (8) 3.10 rubidium atomic frequency standard (8) 3.11 Proactive atomic frequency standard (8) 3.12 passive atomic frequency standard (8) 3.13 quartz crystal frequency standard (8) 3.14 optical frequency standard (8) 3.15 crystal oscillator (8) 3.16 OCXO (9) 3.17 TCXO (9) 3.18 nominal frequency (9) 3.19 frequency actual value (9) Frequency deviation 3.20 (9) 3.21 frequency difference (9) 3.22 frequency accuracy (9) 3.23 Frequency stability (9) 3.24 Long-term frequency stability (9) 3.25 Short-term frequency stability (9) Allan standard deviation of 3.26 (9) 3.27 Fixed Allan standard deviation (10) 3.28 sampling time (10) 3.29 number of samples (10) 3.30 measurement bandwidth (10) 3.31 phase noise (10) 3.32 day aging rate (10) 3.33 monthly drift rate (10) 3.34 Power Characteristics (10) 3.35 Temperature Characteristics (11) 3.36 load characteristic (11) 3.37 voltage characteristic (11) 3.38 frequency reproducibility (11) 3.39 frequency reproducibility (11) 3.40 frequency synthesizer (11) 3.41 frequency counter (11) 3.42 Universal Counter (11) 3.43 frequency divider (11) 3.44 multiplier (11) 3.45 mixer (11) 3.46 phase locked loop (11) 3.47 difference frequency multiplier (12) 3.48 frequency standard comparison (12) 3.49 pairs of mixing time difference method (12) Compared with 3.50 meter (12) 3.51 compared with the dead zone (12) 3.52 Calibration frequency (12) 3.53 Input sensitivity (12) 3.54 measurement resolution (12) 3.55 ratio of uncertainty (12) 3.56 maximum input frequency difference (12) 3.57 GPS-controlled rubidium frequency standard (12) 3.58 GPS-controlled frequency standard quartz (13) Time and frequency measurement terminology and definitions

1 Technical basis

1.1 time scale (time scale) timescale Short time coordinate, also called time scale. Choose a basic unit of time (in seconds), from a specific starting point Cumulative made. Point represents the time on the time scale. year, month, day, hour, minute, second. The difference between the two intervals, Such as. hours, minutes, seconds. 1.2 atomic seconds atomicsecond Currently the basic unit of time in the International System of Units, 1967 Thirteenth General Conference on Weights and Measures adopted by. set Defined as. "seconds is cesium 133 atom transition radiation in their ground state between the two hyperfine levels of 9,192,631,770 cycles Duration. " 1.3 seconds mean solar meansolarsecond The basic unit of time based on the Earth's rotation period to export, and in 1820 formally defined. a mean solar seconds flat sun 86400 one-day. Mean solar day understood as a simple average of the true solar day within a year. A world class 1.4 (UT1) universaltime In seconds mean solar time scale accumulation unit established through the flat bottom surface of the sun from the meridian where the observer's time As a starting point of the day, the observer called his local mean solar time. The beginning of the world known as the meridional plane of mean solar time Time. When observation error caused by changes in the Earth's rotation axis (called the shift) after correction is called a world class, codenamed Degree 3ms (k = 2). 1.5 International Atomic Time (TAI) internationalatomictime Atomic seconds, the 1958 world from at 0.00 on January 1 began to accumulate time-scale. By the BIPM When utilizing distributed around the world about 300 atomic clocks continuous readings weighted get free atoms and then Direct replicating device as defined calibration seconds, when highly stable and highly accurate International Atomic get. 1.6 Coordinated Universal Time (UTC) coordinateduniversaltime When the time scale International Atomic (TAI) produced after coordination with the World time (UT1), the unit of time used as the TAI Atomic seconds, the time and UT1 close, the difference between them is less than 0.9s, with the difference TAI integer seconds. UTC is Unified international legal time, national or regional standard time and UTC offset whole hours, over the Eastern Hemisphere Ago, the Western Hemisphere lag. 1.7 leap seconds leapsecond In order to maintain the difference between UTC and UT1 is less than 0.9s, in UTC on introducing amendments seconds. Leap seconds in a minute 61 Seconds change (positive leap seconds) or 59 (negative leap seconds). Leap seconds were informed by the International Bureau 10 weeks in advance Places punctuality laboratory. Selected priority leap second time last minute end of June or the end of December. Up to now all Positive leap seconds. 1.8 Beijing Beijingtime Our unified national standard time used in the time ahead UTC8h.

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