Policy on Intellectual Property Right (IPR)
ANNEX 1
Calculation of pfd interference levels to aeronautical mobile
telemetry systems from geostationary satellite emissions
1 Introduction
2 Development of values
2.1 Telemetry system
characteristics
2.2 Interference from
geostationary satellites
2.2.1 Time-gain
function of interference
2.2.2 C/I analysis
2.2.3 Impact on
telemetry link design
2.2.4 Interference
allowances
2.2.5 Minimum S
versus angle of arrival, α
2.2.6 pfd versus
angle of arrival
2.2.7 Multiple
entries
2.3 Single entry pfd values
ANNEX 2
Mitigation techniques
1 Mitigation techniques for
telemetry systems in the aeronautical mobile service
1.1 Frequency avoidance
1.2 Polarization
discrimination
1.3 Modulation and
bandwidth considerations
1.4 Telemetry airborne
transmit antenna diversity
1.5 Telemetry site
diversity
1.6 Aeronautical telemetry
test range geometry
1.7 Aeronautical telemetry
receiver interference cancelling techniques
1.8 General sharing assessment
2 Mitigation techniques to
facilitate sharing with BSS (DSB) systems
2.1 BSS (sound) systems
2.2 Orbit location
2.3 Modulation and
implementation
2.4 Spectrum spreading
2.5 Receiver performance
2.6 Satellite transmit
antenna and coverage area
2.7 Highly-inclined
elliptical orbit (HEO) BSS (sound) systems
2.8 Frequency avoidance
3 Practical measures to permit
inter-service sharing