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Instrument details
Acronym
SEM/IMS
Full name
Space Environment Monitor - Ionosphere Measurement Sensor
Purpose
To measure ionospheric electron temperature and density, and platform charge and dose
Short description
Specially arranged Lanfmuir Probe for electron temperature (0-1 eV) and density in the 10- 10^6 e/cm3 range
Background
Part of the Space Environment Monitor of FY-1 and FY-3 A/B satellites
Scanning Technique
In-situ measurement in a sunsynchronous orbit
Resolution
N/A
Coverage / Cycle
N/A
Mass
Power
Data Rate
Providing Agency
CMA
Instrument Maturity
Flown on operational programme
Utilization Period:
1988-12-07 to 1988-10-16
Last update:
2017-04-21
Detailed characteristics
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
future satellites
Instrument classification
Solar and space environment monitors Field or radiowave sensor
WIGOS Subcomponents
No WIGOS subcomponents have been defined.
Mission objectives
Primary mission objectives Electrostatic charge Radiation Dose Rate Secondary mission objectives Show all Show fewer
Tentative Evaluation of Measurements
The following list indicates which measurements can typically be
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
Electron Density 4 - fair No specific limitation. Platform. Electron density
Radiation Dose Rate 3 - high No specific limitation. Platform. Dose
Electrostatic charge 3 - high No specific limitation. Platform. Electrostatic charge
Instrument: SEM/IMS