ANNEX 1 - Feasibility of sharing between the Earth
exploration-satellite service (EESS) (spaceborne passive sensors) and the ISS
operating near 118 and 183 GHz
1
Introduction
2
Equipment
characteristics
2.1
Passive
sensors
2.1.1 Low-Earth orbiting (LEO) scanning sensors
2.1.2 Geostationary orbiting sensors
2.1.3 Push‑broom sensors
2.1.4 Limb sounding sensors
2.1.5
Sensor
characteristics
2.2
Inter-satellite
systems
2.2.1 Modelled systems
2.2.2 Operational systems in other bands
3
Approach
3.1
Analysis
organization
3.2
Establishment
of geometries causing interference
3.3
Temporal
analysis of interference-causing constellations
3.4
Comparison
4
Analysis
4.1
Interference
to LEO sensors
4.1.1 Identification of circumstances causing interference
4.1.2 Temporal analysis
4.1.3 Analysis of interference avoidance for ISLs
4.1.4 Restrictions on sensor calibration angle and antenna
gain to facilitate sharing
4.1.5 Limitations on ISLs in the GSO
4.1.6 Compatibility summary on LEO sensors
4.2
Interference
to geostationary orbiting sensors
4.2.1 Identification of interference situations
4.2.2 Static analysis of interference from non-GSO ISLs
4.2.3 Temporal analysis of non-GSO interference
4.2.4 Interference from other GSO ISLs
4.2.5 Comparison and conclusions on sharing with
geostationary orbiting sensors
5
Conclusions
5.1
Sharing
in the 116‑126 GHz frequency band
5.2
Sharing
in the frequency bands between 174.5 and 190 GHz
5.3
Restricting
sensor techniques to facilitate sharing