Modular Multispectral Imaging Array
Observation of Transient Luminous Events (TLE) that occur in the Earth's upper atmosphere accompanied by thunderstorms in the lower atmosphere.
The instrument monitors the 777.4 nm and 337 nm bands in bandwidths only 5 nm wide. It includes 4 cameras and 4 photometers looking forward towards the limb and 2 cameras and 2 photometers looking downwards towards the nadir.
MMIA works in association to the Modular X-ray and Gamma-ray Sensor (MXGS).
Array of 1024 x 1024 detectors looking either to the nadir within an 80° x 80° field of view, or at the limb within a 20° x 20 ° field of view. Time resolution: 65 ms.
300-400 m at s.s.p., or 300-600 m at limb.
Coverage / Cycle
Limited to latitudes consistent with the ISS orbit inclination (51.6°)
Flown on an R&D satellite
2018 to ≥2021
Satellites this instrument is flying on
Note: a red tag indicates satellites no longer operational, a
green tag indicates operational satellites, a blue tag indicates
Earth observation instrument Passive optical radiometer or spectrometer Lightning imager
No WIGOS subcomponents have been defined.
Tentative Evaluation of Measurements
The following list indicates which measurements can
retrieved from this category of instrument. To see a full Gap Analysis by Variable,
click on the respective variable.
Note: table can be sorted by clicking on the column headers
Variable Relevance for measuring this variable Operational limitations Explanation
Total lightning density 5 - marginal Discontinuous availability.. Night time only. Coincidence flashes in UV/VIS/NIR channels, exploited for Transient Luminous Events (TLE) in the upper atmosphere.