Gap analyses by variable or by type of mission or by WIGOS subcomponent

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

Select WIGOS subcomponents

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.

Variable sorting criteria

 

Each instrument is assigned with a 5-step rating, evaluated as a blend of several elements.  For this particular Variable, the rating is driven by:

  • the involved particles (electrons, protons, alpha-particles);
  • the observed region (interplanetary space, Sun).

 

RATING CRITERIA:

1

  • Spectrometer for electrons, protons and alpha particles, viewing the interplanetary space
  • Solar-pointingspectrometer for electrons, protons and alpha particles

2

  • Spectrometer for electrons and protons, viewing the interplanetary space
  • Solar-pointing spectrometer for electrons and protons

3

  • Spectrometer for protons and alpha particles, viewing the interplanetary space
  • Solar-pointing spectrometer for protons and alpha particles

4

  • Magnetic and electric oscillators flown in a solar orbit

5

  • Low-noise radio receiver
Measurement timeline for Solar wind density

Definition:

Density of solar wind plasma

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

Found 31 results

This table has a large number of results.
Hide inactive instruments
Instrument NRT? Relevance Satellite Orbit
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
EPACT Important note1 - primaryWIND
X
XXXXXXXXXXXXXXXXXXXXXXXXXXX
EPAM Important note1 - primaryACE
X
XXXXXXXXXXXXXXXXXXXXXXXXXXXXX
EPD1 - primarySolar Orbiter25 °
X
XXXXXXXXXX
ERNE1 - primarySOHO
X
XXXXXXXXXXXXXXXXXXXXXXXXXX
IMPACT/SEP1 - primarySTEREO-B23.44 °
X
XXXXXXX
X
IMPACT/SEP1 - primarySTEREO-A23.44 °
X
XXXXXXXXXXXXXXX
PAPA1 - primaryAditya-1XXXXXX
SWA1 - primarySolar Orbiter25 °
X
XXXXXXXXXX
SWE Important note1 - primaryWIND
X
XXXXXXXXXXXXXXXXXXXXXXXXXXX
SWIS/SWiPS1 - primarySWFO-L1XXXXXX
COSTEP1 - primarySOHO
X
XXXXXXXXXXXXXXXXXXXXXXXXXX
Electron-M-PESCA1 - primaryCoronas-Photon82.5 °
X
SKL-particles1 - primaryCoronas-I82.5 °
X
SKL-particles1 - primaryCoronas-F82.5 °
X
XXX
X
SWEAPI1 - primaryParker Solar Probe3.4 °
X
XXXXXXX
SWEPAM Important note1 - primaryACE
X
XXXXXXXXXXXXXXXXXXXXXXXXXXXXX
PLASMA2 - very highWIND
X
XXXXXXXXXXXXXXXXXXXXXXXXXXX
ASPEX3 - highAditya-1XXXXXX
CRIS (ACE)3 - highACE
X
XXXXXXXXXXXXXXXXXXXXXXXXXXXXX
FCYes3 - highDSCOVRN/A
X
XXXXXXXX
PLASTIC3 - highSTEREO-B23.44 °
X
XXXXXXX
X
PLASTIC3 - highSTEREO-A23.44 °
X
XXXXXXXXXXXXXXX
SMS Important note3 - highWIND
X
XXXXXXXXXXXXXXXXXXXXXXXXXXX
SWICS3 - highACE
X
XXXXXXXXXXXXXXXXXXXXXXXXXXXXX
CELIAS3 - highSOHO
X
XXXXXXXXXXXXXXXXXXXXXXXXXX
ISIS-EPI3 - highParker Solar Probe3.4 °
X
XXXXXXX
SIS Important note3 - highACE
X
XXXXXXXXXXXXXXXXXXXXXXXXXXXXX
FIELDS Important note4 - fairParker Solar Probe3.4 °
X
XXXXXXX
S/WAVES5 - marginalSTEREO-B23.44 °
X
XXXXXXX
X
S/WAVES5 - marginalSTEREO-A23.44 °
X
XXXXXXXXXXXXXXX
WAVES5 - marginalWIND
X
XXXXXXXXXXXXXXXXXXXXXXXXXXX
All instruments for measuring Solar wind density
Instruments Relevance Operational limitations
EPACT1 - primary
EPAM1 - primary
EPD1 - primary
ERNE1 - primary
IMPACT/SEP1 - primary
PAPA1 - primary
SWA1 - primary
SWE1 - primary
SWIS/SWiPS1 - primary
COSTEP1 - primary
Electron-M-PESCA1 - primary
SKL-particles1 - primary
SWEAPI1 - primary
SWEPAM1 - primary
PLASMA2 - very high
GGAK-E/SKL-E2 - very high
ASPEX3 - high
CRIS (ACE)3 - high
FC3 - high
PLASTIC3 - high
SMS3 - high
SWICS3 - high
CELIAS3 - high
ISIS-EPI3 - high
SIS3 - high
FIELDS4 - fair
S/WAVES5 - marginal
WAVES5 - marginal