Class information for:
Level 1: FREE SPACE OPTICAL COMMUNICATION//FREE SPACE OPTICS//POINTING ERRORS

Basic class information

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
13 4 PHYSICS, PARTICLES & FIELDS//PHYSICS, NUCLEAR//OPTICS 1062565
455 3       OPTICS//JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION//ATMOSPHERIC TURBULENCE 26212
2018 2             VISIBLE LIGHT COMMUNICATION//FREE SPACE OPTICAL COMMUNICATION//VISIBLE LIGHT COMMUNICATION VLC 5876
6754 1                   FREE SPACE OPTICAL COMMUNICATION//FREE SPACE OPTICS//POINTING ERRORS 1474

Terms with highest relevance score



rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 FREE SPACE OPTICAL COMMUNICATION authKW 1748309 10% 53% 154
2 FREE SPACE OPTICS authKW 1573423 8% 63% 117
3 POINTING ERRORS authKW 1382274 6% 79% 82
4 ATMOSPHERIC TURBULENCE authKW 1238886 14% 29% 203
5 FREE SPACE OPTICS FSO authKW 932433 4% 84% 52
6 GAMMA GAMMA DISTRIBUTION authKW 844725 3% 90% 44
7 FREE SPACE OPTICAL FSO COMMUNICATION authKW 656856 3% 81% 38
8 GAMMA GAMMA FADING authKW 598644 2% 100% 28
9 FSO authKW 395096 2% 60% 31
10 SUBCARRIER INTENSITY MODULATION authKW 367531 1% 90% 19

Web of Science journal categories



chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Optics 36542 65% 0% 956
2 Telecommunications 26151 36% 0% 528
3 Engineering, Electrical & Electronic 6668 40% 0% 592
4 Computer Science, Information Systems 1091 8% 0% 113
5 Computer Science, Hardware & Architecture 1018 5% 0% 73
6 Engineering, Aerospace 516 3% 0% 45
7 Physics, Applied 111 9% 0% 129
8 Transportation Science & Technology 6 0% 0% 6
9 Engineering, General -0 0% 0% 7
10 Remote Sensing -0 0% 0% 2

Address terms



chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 ELECT COMP TELECOMMUN CONTROL 195219 1% 42% 22
2 SATELLITE WIRELESS COMMUN 157492 1% 39% 19
3 BROADBAND COMMUN 140307 1% 35% 19
4 MATH ANAL STAT OPERAT PL MATH 128281 0% 100% 6
5 TUNABLE LASER TECHNOL 122765 5% 9% 67
6 OPT COMMUN GRP 89245 3% 10% 40
7 FREQUENCY ENGN 65469 0% 44% 7
8 BATTLE SYST NAVAL OPERAT SEA STUDIES NAV ELE 64140 0% 100% 3
9 FREE SPACE OPT COMMUN TECHNOL 64140 0% 100% 3
10 BHARTI TELECOM TECHNOL MANAGEMENT 57011 0% 67% 4

Journals



chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 JOURNAL OF OPTICAL COMMUNICATIONS AND NETWORKING 73394 4% 6% 62
2 IET OPTOELECTRONICS 29773 2% 6% 24
3 JOURNAL OF LIGHTWAVE TECHNOLOGY 16431 7% 1% 98
4 OPTICAL ENGINEERING 16018 7% 1% 104
5 IEEE PHOTONICS JOURNAL 13311 3% 2% 39
6 APPLIED OPTICS 11708 10% 0% 141
7 RADIOENGINEERING 10476 2% 2% 26
8 IEEE TRANSACTIONS ON COMMUNICATIONS 9676 5% 1% 67
9 OPTIK 9169 5% 1% 70
10 IET COMMUNICATIONS 8265 2% 1% 33

Author Key Words



chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 FREE SPACE OPTICAL COMMUNICATION 1748309 10% 53% 154 Search FREE+SPACE+OPTICAL+COMMUNICATION Search FREE+SPACE+OPTICAL+COMMUNICATION
2 FREE SPACE OPTICS 1573423 8% 63% 117 Search FREE+SPACE+OPTICS Search FREE+SPACE+OPTICS
3 POINTING ERRORS 1382274 6% 79% 82 Search POINTING+ERRORS Search POINTING+ERRORS
4 ATMOSPHERIC TURBULENCE 1238886 14% 29% 203 Search ATMOSPHERIC+TURBULENCE Search ATMOSPHERIC+TURBULENCE
5 FREE SPACE OPTICS FSO 932433 4% 84% 52 Search FREE+SPACE+OPTICS+FSO Search FREE+SPACE+OPTICS+FSO
6 GAMMA GAMMA DISTRIBUTION 844725 3% 90% 44 Search GAMMA+GAMMA+DISTRIBUTION Search GAMMA+GAMMA+DISTRIBUTION
7 FREE SPACE OPTICAL FSO COMMUNICATION 656856 3% 81% 38 Search FREE+SPACE+OPTICAL+FSO+COMMUNICATION Search FREE+SPACE+OPTICAL+FSO+COMMUNICATION
8 GAMMA GAMMA FADING 598644 2% 100% 28 Search GAMMA+GAMMA+FADING Search GAMMA+GAMMA+FADING
9 FSO 395096 2% 60% 31 Search FSO Search FSO
10 SUBCARRIER INTENSITY MODULATION 367531 1% 90% 19 Search SUBCARRIER+INTENSITY+MODULATION Search SUBCARRIER+INTENSITY+MODULATION

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.

Classes with closest relation at Level 1



rank cluster_id2 link
1 26545 POISSON CHANNEL//DISCRETE TIME POISSON CHANNEL//DIRECT DETECTION PHOTON CHANNEL
2 12135 LARGE APERTURE SCINTILLOMETER//SCINTILLOMETER//ANGLE OF ARRIVAL FLUCTUATIONS
3 24838 UNDERWATER WIRELESS OPTICAL COMMUNICATIONS//ELE OOPT SPECIAL MISSION SENSORS//ULTRAVIOLET COMMUNICATION
4 6584 VISIBLE LIGHT COMMUNICATION//VISIBLE LIGHT COMMUNICATION VLC//OPTICAL WIRELESS COMMUNICATION
5 25707 CONTRAST TRANSMISSION//106 MU M PULSE LASER//2000 HOGBACK RD SUITE 3
6 23585 CAT EYE EFFECT//RETROREFLECTOR//LASER LONG PATH ABSORPTION METHOD
7 4011 FADING CHANNELS//NAKAGAMI FADING//SELECTION COMBINING
8 2740 SITE TESTING//ATMOSPHERIC EFFECTS//ADAPTIVE OPTICS
9 30008 REFLECTIVE TOMOGRAPHY//LADAR TECHNOL BRANCH//SYNTHETIC APERTURE IMAGING LADAR
10 803 LASER PHYS CHEM//TURBULENT ATMOSPHERE//VECTORIAL STRUCTURE

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