Gap analyses by variable or by type of mission

Please select either a variable or a type of mission to display a time chart of satellite instruments having the potential to provide the corresponding measurements. The selection is based on design characteristics (Expert analysis) or declared mission objectives (Simplified analysis). Such a preliminary analysis does not replace a detailed assessment of the actual instrument performances, data availability, and quality of derived environmental data records against specific user requirements.

Note: The chart can be sorted by clicking on the header columns and filtered by instrument properties when applicable. Select the period of interest with the cursor at the bottom of the chart. Future missions which are not firmly planned are shaded with stripes. A warning icon (Important note) indicates degraded satellite: hover over the icon for details. The chart is followed by a table of all potentially relevant instruments.

Select a variable

or select a type of mission

Analysis
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In "Simplified" mode, the results in the analysis are calculated by looking at each instrument's mission objectives: for each instrument we keep track of what the primary, secondary, and opportunity mission objectives are. These mission objectives indicate that an instrument is primarily envisioned to measure variable X, Y and Z, that variables A, B and C are its secondary objective, and that it may offer the opportunity to measure variables I and II although it is not optimized for that. The simplified Gap analysis produces a timeline based on this information. The simplified Gap analysis is only available for analyzing variables, not for missions.
In "Expert system" mode, the results in the analysis are calculated with an expert system. Internally, OSCAR works with a large set of 1700 rules that determine whether or not an instrument is capable of measuring a given variable, and to what degree. When you select "Expert system", the Gap analysis is performed based on this large set of rules.
Measurement timeline for Gravity field

Definition:

Indicative of the statics and dynamics of the lithosphere and the mantle - Physical unit: [ mGal ] where : 1 Gal = 0.01 m.s-2

Hint: Move around in the timeline by scrolling up, down, left or right.

Found 195 results

Instrument NRT? Relevance Satellite Orbit
1965
1966
1967
1968
1969
1970
1971
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2020
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2040
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HAIRS Important noteNo1 - primaryGRACE (2 sats)89 °
X
XXXXXXXXXXXXXX
X
HAIRS Important note1 - primaryGRACE-FO (2 sats)89 °
X
XXXXX
SSTI1 - primaryGOCE06:00 asc
X
XXX
X
ACC2 - very highSWARM-C87.35 °
X
XXXXXXX
ACC2 - very highSWARM-B87.75 °
X
XXXXXXX
ACC2 - very highSWARM-A87.35 °
X
XXXXXXX
EGG2 - very highGOCE06:00 asc
X
XXX
X
STAR2 - very highCHAMP87 °
X
XXXXXXXXX
X
SuperSTAR Important noteNo2 - very highGRACE (2 sats)89 °
X
XXXXXXXXXXXXXX
X
SuperSTAR Important note2 - very highGRACE-FO (2 sats)89 °
X
XXXXX
LR3 - highSTARLETTE49.8 °
X
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
LR3 - highSTELLA98.6 °
X
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
LRA (ASI)3 - highLAGEOS-1109.8 °
X
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
LRA (ASI)3 - highLAGEOS-252.6 °
X
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
LRA (ASI)3 - highLARES-169.5 °
X
XXXXXXXXXXXXXXXXXX
LRA (ASI)3 - highLARES-270.16 °
X
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
RRA3 - highGFZ-151.6 °
X
XXX
X
RRA (CNES)3 - highDiadéme-139.9 °
X
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
RRA (CNES)3 - highDiadéme-239.4 °
X
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
LRA (CNES)3 - highSARAL05:56 asc
X
XXXXXXX
LRA (KARI)3 - highSTSat-2C80 °
X
X
LRA (NASA)3 - highGFO108 °
X
XXXXXXXXX
X
LRA (NASA)3 - highHY-2A06:00 desc
X
XXXXXXXXX
LRA (NASA)3 - highICESat94 °
X
XXXXXX
X
LRA (NASA)3 - highICESat-294 °
X
XXXXX
LRA (NASA)3 - highJASON-166 °
X
XXXXXXXXXXX
X
LRA (NASA)3 - highJASON-266 °
X
XXXXXXXXXX
X
LRA (NASA)Yes3 - highJASON-366 °
X
XXXXX
LRA (NASA)3 - highTOPEX-Poseidon66 °
X
XXXXXXXXXXXX
X
LRA (NASA)3 - highJASON-CS-A66 °
X
XXXXXXX
LRA (NASA)3 - highJASON-CS-B66 °XXXXXXXX
LRA (NASA)3 - highHY-2B06:00 desc
X
XXXXX
LRA (NASA)3 - highHY-2C66 °XXXXXX
LRA (NASA)3 - highHY-2D66 °XXXXXX
LRA (NASA)3 - highHY-2E06:00 descXXXXXX
LRA (NASA)3 - highHY-2F66 °XXXXXX
LRA (NASA)3 - highHY-2G66 °XXXXXX
LRR (DLR)3 - highCHAMP87 °
X
XXXXXXXXX
X
LRR (DLR)No3 - highGRACE (2 sats)89 °
X
XXXXXXXXXXXXXX
X
LRR (DLR) Important note3 - highGRACE-FO (2 sats)89 °
X
XXXXX
LRR (DLR)3 - highKOMPSAT-506:00 asc
X
XXXXXXX
LRR (DLR)3 - highSWARM-C87.35 °
X
XXXXXXX
LRR (DLR)3 - highSWARM-B87.75 °
X
XXXXXXX
LRR (DLR)3 - highSWARM-A87.35 °
X
XXXXXXX
LRR (DLR)3 - highSEOSAR/Paz06:00 asc
X
XXXXX
LRR (ESA)3 - highCryoSat92 °
X
LRR (ESA)No3 - highCryoSat-292 °
X
XXXXXXXXXX
LRR (ESA)3 - highEnvisat10:00 desc
X
XXXXXXXXX
X
LRR (ESA)3 - highERS-110:30 desc
X
XXXXXXXX
X
LRR (ESA)3 - highERS-210:30 desc
X
XXXXXXXXXXXXXXX
X
LRR (ESA)3 - highGOCE06:00 asc
X
XXX
X
LRR (ESA)Yes3 - highSentinel-3A10:00 desc
X
XXXXXXX
LRR (ESA)Yes3 - highSentinel-3B10:00 desc
X
XXXXXXX
LRR (ESA)3 - highSentinel-3C10:00 descXXXXXXXX
LRR (ESA)3 - highSentinel-3D10:00 descXXXXXXXX
LRR (NASA)3 - highSeaSat108 °
X
RIS3 - highADEOS10:30 desc
X
X
DORIS3 - highCryoSat92 °
X
DORISNo3 - highCryoSat-292 °
X
XXXXXXXXXX
DORIS3 - highEnvisat10:00 desc
X
XXXXXXXXX
X
DORIS3 - highHY-2A06:00 desc
X
XXXXXXXXX
DORIS3 - highJASON-166 °
X
XXXXXXXXXXX
X
DORIS3 - highJASON-266 °
X
XXXXXXXXXX
X
DORISYes3 - highJASON-366 °
X
XXXXX
DORIS3 - highSARAL05:56 asc
X
XXXXXXX
DORISYes3 - highSentinel-3A10:00 desc
X
XXXXXXX
DORIS3 - highSPOT-210:30 desc
X
XXXXXXXXXXXXXXXXXX
X
DORIS3 - highSPOT-310:30 desc
X
XX
X
DORIS3 - highSPOT-410:30 desc
X
XXXXXXXXXXXXXX
X
DORIS3 - highSPOT-510:30 desc
X
XXXXXXXXXXXX
X
DORIS3 - highTOPEX-Poseidon66 °
X
XXXXXXXXXXXX
X
DORIS3 - highJASON-CS-A66 °
X
XXXXXXX
DORIS3 - highJASON-CS-B66 °XXXXXXXX
DORIS3 - highHY-2B06:00 desc
X
XXXXX
DORIS3 - highHY-2C66 °XXXXXX
DORIS3 - highHY-2D66 °XXXXXX
DORIS3 - highHY-2E06:00 descXXXXXX
DORIS3 - highHY-2F66 °XXXXXX
DORIS3 - highHY-2G66 °XXXXXX
DORISYes3 - highSentinel-3B10:00 desc
X
XXXXXXX
DORIS3 - highSentinel-3C10:00 descXXXXXXXX
DORIS3 - highSentinel-3D10:00 descXXXXXXXX
PRARE Important note3 - highERS-110:30 desc
X
PRARE Important note3 - highERS-210:30 desc
X
XXXXXXXXXXX
X
PRARE3 - highMeteor-3-682.5 °
X
X
X
NRA4 - fairTOPEX-Poseidon66 °
X
XXXXXXXXXXXX
X
Poseidon-24 - fairJASON-166 °
X
XXXXXXXXXXX
X
Poseidon-34 - fairJASON-266 °
X
XXXXXXXXXX
X
Poseidon-3BYes4 - fairJASON-366 °
X
XXXXX
SRAL (JASON)4 - fairJASON-CS-A66 °
X
XXXXXXX
SRAL (JASON)4 - fairJASON-CS-B66 °XXXXXXXX
SSALT4 - fairTOPEX-Poseidon66 °
X
XXXXXXXXXXXX
X
ALT (HY-2A)4 - fairHY-2A06:00 desc
X
XXXXXXXXX
ALT (HY-2A)4 - fairHY-2B06:00 desc
X
XXXXX
ALT (HY-2A)4 - fairHY-2C66 °XXXXXX
ALT (HY-2A)4 - fairHY-2D66 °XXXXXX
ALT (HY-2A)4 - fairHY-2E06:00 descXXXXXX
ALT (HY-2A)4 - fairHY-2F66 °XXXXXX
ALT (HY-2A)4 - fairHY-2G66 °XXXXXX
ALT (SeaSat)4 - fairSeaSat108 °
X
AltiKa4 - fairSARAL05:56 asc
X
XXXXXXX
Altimeter4 - fairSWOT78 °XXXX
Altimeter (COMPIRA)4 - fairCOMPIRA51 °XXXXXX
GFO-RA4 - fairGFO108 °
X
XXXXXXXXX
X
GRA4 - fairGEOSat108 °
X
XXXX
X
RA4 - fairERS-110:30 desc
X
XXXXXXXX
X
RA4 - fairERS-210:30 desc
X
XXXXXXXXXXXXXXX
X
RA-24 - fairEnvisat10:00 desc
X
XXXXXXXXX
X
SIRAL4 - fairCryoSat92 °
X
SIRALNo4 - fairCryoSat-292 °
X
XXXXXXXXXX
SRALYes4 - fairSentinel-3A10:00 desc
X
XXXXXXX
SRALYes4 - fairSentinel-3B10:00 desc
X
XXXXXXX
SRAL4 - fairSentinel-3C10:00 descXXXXXXXX
SRAL4 - fairSentinel-3D10:00 descXXXXXXXX
KaRIN4 - fairSWOT78 °XXXX
SHIOSAI4 - fairCOMPIRA51 °XXXXXX
SWIM4 - fairCFOSAT07:00 desc
X
XXXX
SWIM4 - fairCFOSAT follow-on07:00 descXXXXXX
ATLAS4 - fairICESat-294 °
X
XXXXX
GEDI Lidar4 - fairISS GEDI51.6 °
X
XXXXX
GLAS4 - fairICESat94 °
X
XXXXXX
X
MOLI lidar4 - fairISS MOLI51.6 °XXXXXX
DDMI5 - marginalCYGNSS (8 sats)35 °
X
XXXXX
GAP5 - marginalCASSIOPE80 °
X
XXXXXXX
GPS (ESA)Yes5 - marginalSentinel-3A10:00 desc
X
XXXXXXX
GPS (ESA)5 - marginalSMOS06:00 asc
X
XXXXXXXXXXX
GPS (ESA)5 - marginalSWARM-C87.35 °
X
XXXXXXX
GPS (ESA)5 - marginalSWARM-B87.75 °
X
XXXXXXX
GPS (ESA)5 - marginalJASON-CS-A66 °
X
XXXXXXX
GPS (ESA)5 - marginalJASON-CS-B66 °XXXXXXXX
GPS (ESA)5 - marginalSWARM-A87.35 °
X
XXXXXXX
GPS (ESA)Yes5 - marginalSentinel-3B10:00 desc
X
XXXXXXX
GPS (ESA)5 - marginalSentinel-3C10:00 descXXXXXXXX
GPS (ESA)5 - marginalSentinel-3D10:00 descXXXXXXXX
GPS (NASA)5 - marginalLandsat-410:00 desc
X
XXXXXXXXXXX
GPS (NASA)5 - marginalLandsat-509:45 desc
X
XXXXXXXXXXXXXXXXXXXXXXXXXX
X
GPSDR5 - marginalTOPEX-Poseidon66 °
X
XXXXXXXXXXXX
X
PES5 - marginalIonosphere N1 & N2TBDXXXX
PES5 - marginalIonosphere N3 & N4TBDXXXX
TRSR5 - marginalGFO108 °
X
XXXXXXXXX
X
TRSR5 - marginalICESat94 °
X
XXXXXX
X
TRSR5 - marginalICESat-294 °
X
XXXXX
TRSR Important note5 - marginalJASON-166 °
X
XXXXXXX
X
TRSR5 - marginalJASON-266 °
X
XXXXXXXXXX
X
TRSRYes5 - marginalJASON-366 °
X
XXXXX
AOPOD5 - marginalKOMPSAT-506:00 asc
X
XXXXXXX
ARMA-MP5 - marginalMeteor-MP N115:30 ascXXXXXXXX
ARMA-MP5 - marginalMeteor-MP N209:30 descXXXXXXXX
BlackJack (CHAMP) Important note5 - marginalCHAMP87 °
X
XXXXXXX
X
BlackJack (GRACE) Important noteNo5 - marginalGRACE (2 sats)89 °
X
XXXXXXXXXXXXXX
X
CION5 - marginalCICEROTBD
X
XXXXXXXXXXXXXXXXXXXXXXX
CORISS5 - marginalC/NOFS13 °
X
XXXXXX
X
GNOSYes5 - marginalFY-3C10:15 desc
X
XXXXXXX
GNOSYes5 - marginalFY-3D14:00 asc
X
XXXXX
GNOS5 - marginalFY-3E06:00 descXXXXXX
GNOS5 - marginalFY-3F10:00 descXXXXXX
GNOS5 - marginalFY-3G14:00 ascXXXXXX
GNOS5 - marginalFY-3H06:00 descXXXXXX
GNOS5 - marginalFY-3RM-150 °XXXXXX
GNOS5 - marginalFY-3RM-250 °XXXXXX
GOLPE5 - marginalSAC-C10:20 desc
X
XXXXXXXXXXXX
X
GPS/MET5 - marginalOrbView-1/MicroLab70 °
X
XX
GRASYes5 - marginalMetop-A09:30 desc
X
XXXXXXXXXXXXXXX
GRASYes5 - marginalMetop-B09:30 desc
X
XXXXXXXXXXXX
GRAS5 - marginalMetop-C09:30 desc
X
XXXXXXX
IGOR (COSMIC) Important noteNo5 - marginalCOSMIC-1 Important note72 °
X
XXXXXXXXXXXXXX
IGOR (TacSat-2)5 - marginalTacSat-240 °
X
X
IGOR (TanDEM)5 - marginalTanDEM-X Important note06:00 desc
X
XXXXXXXXXX
IGOR (TerraSAR)5 - marginalTerraSAR-X Important note06:00 desc
X
XXXXXXXXXXXXX
IGOR (TerraSAR)5 - marginalTSX-NG06:00 descXXXXXXXX
RO5 - marginalMetop-SG-A109:30 descXXXXXXXX
RO5 - marginalMetop-SG-A209:30 descXXXXXXXX
RO5 - marginalMetop-SG-A309:30 descXXXXXXXX
RO5 - marginalMetop-SG-B109:30 descXXXXXXXX
RO5 - marginalMetop-SG-B209:30 descXXXXXXXX
RO5 - marginalMetop-SG-B309:30 descXXXXXXXX
ROHPP5 - marginalSEOSAR/Paz06:00 asc
X
XXXXX
ROSA Important note5 - marginalMegha-Tropiques20 °
X
XXXXXXX
X
ROSA Important note5 - marginalSAC-D06:00 desc
X
XXX
X
ROSA (OceanSat)No5 - marginalOceanSat-211:53 desc
X
XXXXXXXXXXX
STRATOS5 - marginalLemur-2TBD
X
XXXXXXXXXXXXXXXXXXXXXXXXX
TGRS (COSMIC-2)5 - marginalCOSMIC-2a24 °
X
XXXXXXX
Tri-G (GRACE-FO) Important note5 - marginalGRACE-FO (2 sats)89 °
X
XXXXX
Tri-G (JASON-CS)5 - marginalJASON-CS-A66 °
X
XXXXXXX
Tri-G (JASON-CS)5 - marginalJASON-CS-B66 °XXXXXXXX
TRSR (Ørsted) Important noteNo5 - marginalØrsted96.5 °
X
XXXXXXX
ASC5 - marginalCHAMP87 °
X
XXXXXXXXX
X
ASC Important noteNo5 - marginalØrsted96.5 °
X
XXXXXXX
IST5 - marginalSAC-C10:20 desc
X
XXXXXXXXXXXX
X
SCA (GRACE) Important noteNo5 - marginalGRACE (2 sats)89 °
X
XXXXXXXXXXXXXX
X
SCA (GRACE) Important note5 - marginalGRACE-FO (2 sats)89 °
X
XXXXX
STA5 - marginalSMOS06:00 asc
X
XXXXXXXXXXX
STR (SWARM)5 - marginalSWARM-C87.35 °
X
XXXXXXX
STR (SWARM)5 - marginalSWARM-B87.75 °
X
XXXXXXX
STR (SWARM)5 - marginalSWARM-A87.35 °
X
XXXXXXX
All instruments for measuring Gravity field
Instruments Relevance Operational limitations
HAIRS1 - primaryAssimilation in gravity model needed..
SSTI1 - primaryAssimilation in gravity model needed..
ACC2 - very highAssimilation in gravity model needed..
EGG2 - very highAssimilation in gravity model needed..
STAR2 - very highAssimilation in gravity model needed..
SuperSTAR2 - very highAssimilation in gravity model needed..
LR3 - highPartial information (geoid)..
LRA (ASI)3 - highPartial information (geoid)..
RRA3 - highPartial information (geoid)..
RRA (CNES)3 - highPartial information (geoid)..
LRA (CNES)3 - highPartial information (geoid)..
LRA (KARI)3 - highPartial information (geoid)..
LRA (NASA)3 - highPartial information (geoid)..
LRR (DLR)3 - highPartial information (geoid)..
LRR (ESA)3 - highPartial information (geoid)..
LRR (NASA)3 - highPartial information (geoid)..
RIS3 - highPartial information (geoid)..
DORIS3 - highHighly indirect..
PRARE3 - highHighly indirect..
NRA4 - fairPartial information (geoid).. Along-track only..
Poseidon-24 - fairPartial information (geoid).. Along-track only..
Poseidon-34 - fairPartial information (geoid).. Along-track only..
Poseidon-3B4 - fairPartial information (geoid).. Along-track only..
SRAL (JASON)4 - fairPartial information (geoid).. Along-track only..
SSALT4 - fairPartial information (geoid).. Along-track only..
ALT (HY-2A)4 - fairPartial information (geoid).. Along-track only..
ALT (SeaSat)4 - fairPartial information (geoid).. Along-track only..
AltiKa4 - fairPartial information (geoid).. Along-track only..
Altimeter4 - fairPartial information (geoid).. Along-track only..
Altimeter (COMPIRA)4 - fairPartial information (geoid).. Along-track only..
GFO-RA4 - fairPartial information (geoid).. Along-track only..
GRA4 - fairPartial information (geoid).. Along-track only..
RA4 - fairPartial information (geoid).. Along-track only..
RA-24 - fairPartial information (geoid).. Along-track only..
SIRAL4 - fairPartial information (geoid).. Along-track only..
SRAL4 - fairPartial information (geoid).. Along-track only..
KaRIN4 - fairPartial information (geoid)..
SHIOSAI4 - fairPartial information (geoid)..
SWIM4 - fairPartial information (geoid)..
ATLAS4 - fairPartial information (geoid)..
GEDI Lidar4 - fairPartial information (geoid)..
GLAS4 - fairPartial information (geoid)..
MOLI lidar4 - fairPartial information (geoid)..
VCL4 - fairPartial information (geoid)..
DDMI5 - marginalHighly indirect..
GAP5 - marginalHighly indirect..
GPS (ESA)5 - marginalHighly indirect..
GPS (NASA)5 - marginalHighly indirect..
GPSDR5 - marginalHighly indirect..
PES5 - marginalHighly indirect..
TRSR5 - marginalHighly indirect..
AOPOD5 - marginalHighly indirect..
ARMA-MP5 - marginalHighly indirect..
BlackJack (CHAMP)5 - marginalHighly indirect..
BlackJack (GRACE)5 - marginalHighly indirect..
CION5 - marginalHighly indirect..
CORISS5 - marginalHighly indirect..
GNOS5 - marginalHighly indirect..
GNSS-RO5 - marginalHighly indirect..
GOLPE5 - marginalHighly indirect..
GPS/MET5 - marginalHighly indirect..
GRAS5 - marginalHighly indirect..
IGOR (COSMIC)5 - marginalHighly indirect..
IGOR (TacSat-2)5 - marginalHighly indirect..
IGOR (TanDEM)5 - marginalHighly indirect..
IGOR (TerraSAR)5 - marginalHighly indirect..
Radiomet5 - marginalHighly indirect..
RO5 - marginalHighly indirect..
ROHPP5 - marginalHighly indirect..
ROSA5 - marginalHighly indirect..
ROSA (OceanSat)5 - marginalHighly indirect..
STRATOS5 - marginalHighly indirect..
TGRS (COSMIC-2)5 - marginalHighly indirect..
Tri-G (GRACE-FO)5 - marginalHighly indirect..
Tri-G (JASON-CS)5 - marginalHighly indirect..
TRSR (Ørsted)5 - marginalHighly indirect..
ASC5 - marginalHighly indirect..
IST5 - marginalHighly indirect..
SCA (GRACE)5 - marginalHighly indirect..
STA5 - marginalHighly indirect..
STR (SWARM)5 - marginalHighly indirect..