Class information for:
Level 1: ALLAN VARIATION//FREQUENCY JUMPS//SIMPLE RESPONSE METHOD

Basic class information
Class id #P Avg. number of
references		 Database coverage
of references
21602 413 18.4 31%


Bar chart of Publication_year

Last years might be incomplete

Hierarchy of classes
The table includes all classes above and classes immediately below the current class.


Cluster id Level Cluster label #P
4 4 ENVIRONMENTAL SCIENCES//GEOSCIENCES, MULTIDISCIPLINARY//METEOROLOGY & ATMOSPHERIC SCIENCES 1766162
488 3       JOURNAL OF GEODESY//GRACE//GPS SOLUTIONS 23184
2576 2             GPS SOLUTIONS//JOURNAL OF GEODESY//PRECISE POINT POSITIONING 3678
21602 1                   ALLAN VARIATION//FREQUENCY JUMPS//SIMPLE RESPONSE METHOD 413

Terms with highest relevance score


rank Term termType Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 ALLAN VARIATION authKW 221804 1% 100% 3
2 FREQUENCY JUMPS authKW 221804 1% 100% 3
3 SIMPLE RESPONSE METHOD authKW 221804 1% 100% 3
4 SPACE NAVIGATION SYSTEMS authKW 221804 1% 100% 3
5 TRAFFIC MEASUREMENT COMMUNICATION authKW 221804 1% 100% 3
6 METROLOGIA journal 179832 20% 3% 82
7 ATOMIC CLOCKS authKW 172911 5% 12% 20
8 FREQUENCY INSTABILITY authKW 166345 1% 38% 6
9 DYNAMIC ALLAN VARIANCE authKW 147869 0% 100% 2
10 DYNAMIC ALLAN VARIANCE DAVAR authKW 147869 0% 100% 2

Web of Science journal categories


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 Instruments & Instrumentation 11978 53% 0% 219
2 Engineering, Electrical & Electronic 2498 46% 0% 189
3 Acoustics 1982 13% 0% 55
4 Physics, Applied 630 27% 0% 111
5 Engineering, Aerospace 428 5% 0% 21
6 Engineering, General 331 7% 0% 30
7 Telecommunications 209 7% 0% 27
8 Remote Sensing 36 1% 0% 6
9 Demography 11 0% 0% 2
10 Automation & Control Systems 6 1% 0% 5

Address terms


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 PL STANDARDS 98578 0% 67% 2
2 TIME FREQUENCY 89456 6% 5% 23
3 ALTERNATE MASTER CLOCK 73935 0% 100% 1
4 ASTROGEODYNAM OBSERV BOROWIEC 73935 0% 100% 1
5 BESANCON OBSERV 73935 0% 100% 1
6 BOROWIEC ASTROGEODYNAM OBSERV 73935 0% 100% 1
7 FREQUENCY STAND GRP 73935 0% 100% 1
8 FREQUENCY TIME SYST 73935 0% 100% 1
9 GRP COMPUTAT ELECT RUMENTAT TIC168 73935 0% 100% 1
10 H ZEITEINHEIT 73935 0% 100% 1

Journals


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 METROLOGIA 179832 20% 3% 82
2 IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT 42073 17% 1% 71
3 IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL 38900 13% 1% 54
4 MEASUREMENT TECHNIQUES 9780 4% 1% 16
5 MAPAN-JOURNAL OF METROLOGY SOCIETY OF INDIA 4057 1% 1% 4
6 PROCEEDINGS OF THE IEEE 2913 3% 0% 13
7 IEEE INSTRUMENTATION & MEASUREMENT MAGAZINE 2829 1% 1% 4
8 JOURNAL OF RESEARCH OF THE NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY 2764 1% 1% 6
9 METROLOGY AND MEASUREMENT SYSTEMS 2057 1% 1% 4
10 PHYSICAL ACOUSTICS 1717 0% 2% 1

Author Key Words


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class		 LCSH search Wikipedia search
1 ALLAN VARIATION 221804 1% 100% 3 Search ALLAN+VARIATION Search ALLAN+VARIATION
2 FREQUENCY JUMPS 221804 1% 100% 3 Search FREQUENCY+JUMPS Search FREQUENCY+JUMPS
3 SIMPLE RESPONSE METHOD 221804 1% 100% 3 Search SIMPLE+RESPONSE+METHOD Search SIMPLE+RESPONSE+METHOD
4 SPACE NAVIGATION SYSTEMS 221804 1% 100% 3 Search SPACE+NAVIGATION+SYSTEMS Search SPACE+NAVIGATION+SYSTEMS
5 TRAFFIC MEASUREMENT COMMUNICATION 221804 1% 100% 3 Search TRAFFIC+MEASUREMENT+COMMUNICATION Search TRAFFIC+MEASUREMENT+COMMUNICATION
6 ATOMIC CLOCKS 172911 5% 12% 20 Search ATOMIC+CLOCKS Search ATOMIC+CLOCKS
7 FREQUENCY INSTABILITY 166345 1% 38% 6 Search FREQUENCY+INSTABILITY Search FREQUENCY+INSTABILITY
8 DYNAMIC ALLAN VARIANCE 147869 0% 100% 2 Search DYNAMIC+ALLAN+VARIANCE Search DYNAMIC+ALLAN+VARIANCE
9 DYNAMIC ALLAN VARIANCE DAVAR 147869 0% 100% 2 Search DYNAMIC+ALLAN+VARIANCE+DAVAR Search DYNAMIC+ALLAN+VARIANCE+DAVAR
10 FREQUENCY MEASUREMENT AND STATISTICS 147869 0% 100% 2 Search FREQUENCY+MEASUREMENT+AND+STATISTICS Search FREQUENCY+MEASUREMENT+AND+STATISTICS

Core articles
The table includes core articles in the class. The following variables is taken into account for the relevance score of an article in a cluster c:
(1) Number of references referring to publications in the class.
(2) Share of total number of active references referring to publications in the class.
(3) Age of the article. New articles get higher score than old articles.
(4) Citation rate, normalized to year.


Rank Reference # ref.
in cl.		 Shr. of ref. in
cl.		 Citations
1 TAVELLA, P , (2008) STATISTICAL AND MATHEMATICAL TOOLS FOR ATOMIC CLOCKS.METROLOGIA. VOL. 45. ISSUE 6. P. S183-S192 22 88% 9
2 WHIBBERLEY, PB , DAVIS, JA , SHEMAR, SL , (2011) LOCAL REPRESENTATIONS OF UTC IN NATIONAL LABORATORIES.METROLOGIA. VOL. 48. ISSUE 4. P. S154 -S164 21 78% 8
3 HUANG, XM , GONG, H , ZHU, XW , OU, G , (2014) DETECTION OF WEAK FREQUENCY ANOMALIES FOR ATOMIC CLOCKS WITH A KALMAN FILTER.METROLOGIA. VOL. 51. ISSUE 3. P. 183-190 15 94% 0
4 FENG, L , LI, GT , (2016) RESEARCH ON SELF-MONITORING METHOD FOR ANOMALIES OF SATELLITE ATOMIC CLOCK.INTERNATIONAL JOURNAL OF AEROSPACE ENGINEERING. VOL. . ISSUE . P. - 13 100% 0
5 HUANG, XM , GONG, H , OU, G , (2014) DETECTION OF WEAK FREQUENCY JUMPS FOR GNSS ONBOARD CLOCKS.IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL. VOL. 61. ISSUE 5. P. 747 -755 12 100% 2
6 GALLEANI, L , TAVELLA, P , (2010) TIME AND THE KALMAN FILTER APPLICATIONS OF OPTIMAL ESTIMATION TO ATOMIC TIMING.IEEE CONTROL SYSTEMS MAGAZINE. VOL. 30. ISSUE 2. P. 44 -65 15 79% 8
7 GREENHALL, CA , (2012) A REVIEW OF REDUCED KALMAN FILTERS FOR CLOCK ENSEMBLES.IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL. VOL. 59. ISSUE 3. P. 491 -496 11 100% 3
8 PANFILO, G , HARMEGNIES, A , TISSERAND, L , (2014) A NEW WEIGHTING PROCEDURE FOR UTC.METROLOGIA. VOL. 51. ISSUE 3. P. 285-292 10 100% 6
9 KHARE, A , ARORA, R , BANIK, A , MEHTA, SD , (2016) AUTONOMOUS RUBIDIUM CLOCK WEAK FREQUENCY JUMP DETECTOR FOR ONBOARD NAVIGATION SATELLITE SYSTEM.IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL. VOL. 63. ISSUE 2. P. 326 -335 11 92% 0
10 WU, YW , ZHU, XW , HUANG, YB , SUN, GF , OU, G , (2016) OPTIMAL OBSERVATION INTERVALS FOR CLOCK PREDICTION BASED ON THE MATHEMATICAL MODEL METHOD.IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT. VOL. 65. ISSUE 1. P. 132 -143 10 91% 0

Classes with closest relation at Level 1


Rank Class id link
1 19629 TIME SYNCHRONIZATION//IEEE 1588//CLOCK SYNCHRONIZATION
2 27018 UNBIASED FIR FILTER//DEADBEAT PROPERTY//FINITE IMPULSE RESPONSE FIR STRUCTURE
3 4817 ATOMIC CLOCKS//OPTICAL FREQUENCY STANDARD//LNE SYRTE
4 4840 GPS SOLUTIONS//PRECISE POINT POSITIONING//AMBIGUITY RESOLUTION
5 34713 RAMANUJAN SUBSPACES//XRAY PHYS IMAGING//MOJETTE TRANSFORM
6 26058 SYNCHRONOUS STATE//DOUBLE FREQUENCY JITTER//WAITING TIME JITTER
7 4690 INERTIAL NAVIGATION//INERTIAL NAVIGATION SYSTEM//NAV ENGN
8 14551 PIEZOELECT DEVICE//LATERAL FIELD EXCITATION//MECH SENSING TECHNOL
9 14709 DIELECTRIC RESONATORS//FREQUENCY STAND METROL GRP//ULTRA STABLE OSCILLATOR
10 36260 COLLABORATIVE BEAMFORMING//DISTRIBUTED COLLABORATIVE BEAMFORMING//ANGULAR DISTRIBUTION SPREAD

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