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 Ionospheric Vertical Total Electron Content (VTEC)

Definition:

Number of electrons between two points. 

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

Found 64 results

Instrument NRT? Relevance Satellite Orbit
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CERTO1 - primaryC/NOFS13 °
X
XXXXXX
X
CERTO/TBB Important noteNo1 - primaryCOSMIC-172 °
X
XXXXXXXXXXXXX
X
CITRIS1 - primarySTPSat-137.4 °
X
X
X
LAERTES1 - primaryIonosphere N1 & N2TBDXXXX
LAERTES1 - primaryIonosphere N3 & N4TBDXXXX
MAYAK1 - primaryIonosphere N1 & N2TBDXXXX
MAYAK1 - primaryIonosphere N3 & N4TBDXXXX
RFB1 - primaryCOSMIC-2a24 °
X
XXXXXXX
RPI1 - primaryIMAGE90 °
X
XXXX
X
WHISPER1 - primaryCLUSTER A&B Important note90 °
X
XXXXXXXXXXXXXXXXXXXX
WHISPER1 - primaryCLUSTER C&D Important note90 °
X
XXXXXXXXXXXXXXXXXXXX
CER1 - primaryCASSIOPE80 °
X
XXXXXXX
CION2 - very highCICEROTBD
X
XXXXXXXXXXXXXXXXXXXXXXX
STRATOS2 - very highLemur-2TBD
X
XXXXXXXXXXXXXXXXXXXXXXXXX
IGOR (COSMIC) Important noteNo2 - very highCOSMIC-172 °
X
XXXXXXXXXXXXX
X
TGRS (COSMIC-2)2 - very highCOSMIC-2a24 °
X
XXXXXXX
ARMA-MP3 - highMeteor-MP N115:30 ascXXXXXXXX
ARMA-MP3 - highMeteor-MP N209:30 descXXXXXXXX
Tri-G (JASON-CS)3 - highJASON-CS-A66 °
X
XXXXXXX
Tri-G (JASON-CS)3 - highJASON-CS-B66 °XXXXXXXX
AOPOD3 - highKOMPSAT-506:00 asc
X
XXXXXXX
GNOSYes3 - highFY-3C10:15 desc
X
XXXXXXX
GNOSYes3 - highFY-3D14:00 asc
X
XXXXX
GNOS-23 - highFY-3RM-150 °XXXXXX
GNOS-23 - highFY-3RM-250 °XXXXXX
GNOS-23 - highFY-3E06:00 descXXXXXX
GNOS-23 - highFY-3F10:00 descXXXXXX
GNOS-23 - highFY-3G14:00 ascXXXXXX
GNOS-23 - highFY-3H06:00 descXXXXXX
RO3 - highMetop-SG-A109:30 descXXXXXXXX
RO3 - highMetop-SG-A209:30 descXXXXXXXX
RO3 - highMetop-SG-A309:30 descXXXXXXXX
RO3 - highMetop-SG-B109:30 descXXXXXXXX
RO3 - highMetop-SG-B209:30 descXXXXXXXX
RO3 - highMetop-SG-B309:30 descXXXXXXXX
GOLPE3 - highSAC-C10:20 desc
X
XXXXXXXXXXXX
X
IGOR (TacSat-2)3 - highTacSat-240 °
X
X
ROSA Important note3 - highSAC-D06:00 desc
X
XXX
X
ROSA Important note3 - highMegha-Tropiques20 °
X
XXXXXXX
X
GPS/MET3 - highOrbView-1/MicroLab70 °
X
XX
ROSA (OceanSat)No3 - highOceanSat-211:53 desc
X
XXXXXXXXXXX
TRSR (Ørsted) Important noteNo3 - highØrsted96.5 °
X
XXXXXXX
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 (HY-2A)4 - fairHY-2A06:00 desc
X
XXXXXXXXX
Altimeter4 - fairSWOT78 °XXXX
Altimeter (COMPIRA)4 - fairCOMPIRA51 °XXXXXX
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
RA-24 - fairEnvisat10:00 desc
X
XXXXXXXXX
X
SRALYes4 - fairSentinel-3B10:00 desc
X
XXXXXXX
SRAL4 - fairSentinel-3C10:00 descXXXXXXXX
SRAL4 - fairSentinel-3D10:00 descXXXXXXXX
SRALYes4 - fairSentinel-3A10:00 desc
X
XXXXXXX
SRAL (JASON)4 - fairJASON-CS-A66 °
X
XXXXXXX
SRAL (JASON)4 - fairJASON-CS-B66 °XXXXXXXX
CORISS4 - fairC/NOFS13 °
X
XXXXXX
X
TPMU Important note5 - marginalPROBA-206:00 asc
X
XXXXXXXXXXX
All instruments for measuring Ionospheric Vertical Total Electron Content (VTEC)
Instruments Relevance Operational limitations
CERTO1 - primaryNo specific limitation..
CERTO/TBB1 - primaryNo specific limitation..
CITRIS1 - primaryNo specific limitation..
LAERTES1 - primaryNo specific limitation..
MAYAK1 - primaryNo specific limitation..
RFB1 - primaryNo specific limitation..
RPI1 - primaryNo specific limitation..
WHISPER1 - primaryNo specific limitation..
CER1 - primaryNo specific limitation..
CION2 - very highNo specific limitation..
STRATOS2 - very highNo specific limitation..
IGOR (COSMIC)2 - very highNo specific limitation..
TGRS (COSMIC-2)2 - very highNo specific limitation..
ARMA-MP3 - highNo specific limitation..
Tri-G (JASON-CS)3 - highNo specific limitation..
AOPOD3 - highNo specific limitation..
GNOS3 - highNo specific limitation..
GNOS-23 - highNo specific limitation..
GNSS-RO3 - highNo specific limitation..
Radiomet3 - highNo specific limitation..
RO3 - highNo specific limitation..
GOLPE3 - highNo specific limitation..
IGOR (TacSat-2)3 - highNo specific limitation..
ROSA3 - highNo specific limitation..
GPS/MET3 - highNo specific limitation..
ROSA (OceanSat)3 - highNo specific limitation..
TRSR (Ørsted)3 - highNo specific limitation..
ALT (HY-2A)4 - fairAlong-track only..
Altimeter4 - fairAlong-track only..
Altimeter (COMPIRA)4 - fairAlong-track only..
NRA4 - fairAlong-track only..
Poseidon-24 - fairAlong-track only..
Poseidon-34 - fairAlong-track only..
Poseidon-3B4 - fairAlong-track only..
RA-24 - fairAlong-track only..
SRAL4 - fairAlong-track only..
SRAL (JASON)4 - fairAlong-track only..
CORISS4 - fairNo specific limitation..
TPMU5 - marginalNo specific limitation..