Class information for:
Level 1: SPACE DEBRIS//ORBITAL DEBRIS//ACTIVE DEBRIS REMOVAL

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
22 4 AUTOMATION & CONTROL SYSTEMS//ENGINEERING, CIVIL//ACOUSTICS 457813
58 3       ROBOTICS//AUTOMATION & CONTROL SYSTEMS//JOURNAL OF GUIDANCE CONTROL AND DYNAMICS 94289
985 2             JOURNAL OF GUIDANCE CONTROL AND DYNAMICS//ENGINEERING, AEROSPACE//JOURNAL OF THE ASTRONAUTICAL SCIENCES 10872
14107 1                   SPACE DEBRIS//ORBITAL DEBRIS//ACTIVE DEBRIS REMOVAL 823

Terms with highest relevance score


rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 SPACE DEBRIS authKW 2853401 21% 43% 172
2 ORBITAL DEBRIS authKW 551837 4% 41% 35
3 ACTIVE DEBRIS REMOVAL authKW 471079 3% 53% 23
4 ORBITAL DEBRIS PROGRAM OFF address 341151 2% 64% 14
5 SPACE DEBRIS OFF address 330961 1% 79% 11
6 SPACE OBJECT DEBRIS OBSERVAT address 306333 2% 50% 16
7 ORBITAL REENTRY DEBRIS STUDIES address 281977 1% 82% 9
8 OPTICAL OBSERVATIONS authKW 264068 2% 34% 20
9 SPACE SITUATIONAL AWARENESS authKW 253397 2% 44% 15
10 ADVANCES IN SPACE RESEARCH journal 222167 29% 2% 239

Web of Science journal categories


chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Engineering, Aerospace 98596 52% 1% 432
2 Meteorology & Atmospheric Sciences 9130 30% 0% 245
3 Astronomy & Astrophysics 9122 44% 0% 359
4 Geosciences, Multidisciplinary 5528 30% 0% 251
5 International Relations 701 4% 0% 34
6 Instruments & Instrumentation 483 8% 0% 69
7 Social Sciences, Interdisciplinary 270 3% 0% 27
8 Mathematics, Interdisciplinary Applications 201 4% 0% 33
9 Law 14 1% 0% 9
10 Engineering, General 9 1% 0% 11

Address terms


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 ORBITAL DEBRIS PROGRAM OFF 341151 2% 64% 14
2 SPACE DEBRIS OFF 330961 1% 79% 11
3 SPACE OBJECT DEBRIS OBSERVAT 306333 2% 50% 16
4 ORBITAL REENTRY DEBRIS STUDIES 281977 1% 82% 9
5 SURVEILLANCE TECH GRP 159555 1% 83% 5
6 SPACE FLIGHT DYNAM 147271 1% 38% 10
7 ASTRONAUT GRP 106072 2% 21% 13
8 ESA SPACE DEBRIS OFF 76587 0% 100% 2
9 NETWORK SPACE OPERAT COMMAND 76587 0% 100% 2
10 SILK RD INT LAW 76587 0% 100% 2

Journals


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 ADVANCES IN SPACE RESEARCH 222167 29% 2% 239
2 ACTA ASTRONAUTICA 119143 17% 2% 137
3 SPACE POLICY 52521 3% 5% 27
4 JOURNAL OF SPACECRAFT AND ROCKETS 40788 8% 2% 68
5 JOURNAL OF GUIDANCE CONTROL AND DYNAMICS 23144 7% 1% 60
6 JOURNAL OF THE ASTRONAUTICAL SCIENCES 16775 2% 2% 20
7 CELESTIAL MECHANICS & DYNAMICAL ASTRONOMY 16147 3% 2% 28
8 JOURNAL OF EAST ASIA AND INTERNATIONAL LAW 5884 0% 4% 4
9 EARTH-ORIENTED APPLICATIONS OF SPACE TECHNOLOGY 4638 0% 6% 2
10 RESEARCH IN ASTRONOMY AND ASTROPHYSICS 3253 1% 1% 10

Author Key Words


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 SPACE DEBRIS 2853401 21% 43% 172 Search SPACE+DEBRIS Search SPACE+DEBRIS
2 ORBITAL DEBRIS 551837 4% 41% 35 Search ORBITAL+DEBRIS Search ORBITAL+DEBRIS
3 ACTIVE DEBRIS REMOVAL 471079 3% 53% 23 Search ACTIVE+DEBRIS+REMOVAL Search ACTIVE+DEBRIS+REMOVAL
4 OPTICAL OBSERVATIONS 264068 2% 34% 20 Search OPTICAL+OBSERVATIONS Search OPTICAL+OBSERVATIONS
5 SPACE SITUATIONAL AWARENESS 253397 2% 44% 15 Search SPACE+SITUATIONAL+AWARENESS Search SPACE+SITUATIONAL+AWARENESS
6 SPACE SURVEILLANCE 201446 1% 48% 11 Search SPACE+SURVEILLANCE Search SPACE+SURVEILLANCE
7 CONJUNCTION ASSESSMENT 159555 1% 83% 5 Search CONJUNCTION+ASSESSMENT Search CONJUNCTION+ASSESSMENT
8 SPACE SECURITY 137852 1% 60% 6 Search SPACE+SECURITY Search SPACE+SECURITY
9 DEBRIS MITIGATION 136146 1% 44% 8 Search DEBRIS+MITIGATION Search DEBRIS+MITIGATION
10 MOID 122538 0% 80% 4 Search MOID Search MOID

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 15454 FROZEN ORBITS//CRITICAL INCLINATION//HIGH AREA TO MASS RATIO
2 35203 MIMO THERMAL PLANTS//KATEDRA AUTOMATYKI PRZEMYSLOWEJ ROBOTYKI//AUTOMAT PRZEMYSL
3 22640 LASER PROPULSION//IMPULSE COUPLING COEFFICIENT//CHRYSOTIMUS
4 8077 FORMATION FLYING//JOURNAL OF GUIDANCE CONTROL AND DYNAMICS//SPACECRAFT FORMATION FLYING
5 16088 HYPERVELOCITY IMPACT//INTERNATIONAL JOURNAL OF IMPACT ENGINEERING//DEBRIS CLOUD
6 13346 TETHERED SATELLITE SYSTEM//ELECTRODYNAMIC TETHER//TETHERED SATELLITE
7 28407 ORBITAL REPLACEMENT UNIT//MULTI STATE FAILURE//HEALTH SCORECARD
8 34463 BODY OF MINIMAL RESISTANCE//NEWTONS PROBLEM//PROBLEMS OF MINIMAL RESISTANCE
9 34033 ALL RUSSIA PETR EXPLORAT VNIGRI//MINICOMETS//THERMOCHEMICAL CALCULATION
10 28688 SPACE TOURISM//SPACE LAW//SPACE POLICY

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