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ANNEX 1
Methods for the determination of the coordination area of an earth station
1 Introduction
1.1 Overview
1.2 Structure
1.3 Basic concepts
1.4 Sharing scenarios
1.4.1 Earth
stations operating with geostationary space stations
1.4.2 Earth
stations operating with non-geostationary space stations
1.4.3 Earth
stations operating with both geostationary and non-geostationary space stations
1.4.4 Earth
stations operating in bidirectionally allocated frequency bands
1.4.5 Broadcasting-satellite
service earth stations
1.4.6 Mobile
(except aeronautical mobile) earth stations
1.4.7 Aeronautical
mobile earth stations
1.4.8 Transportable
earth stations
1.4.9 Fixed
earth stations operated at unspecified locations within a specific service area
1.5 Propagation model
concepts
1.5.1 Propagation
mode (1)
1.5.2 Propagation
mode (2)
1.5.3 Distance
limits
1.6 The coordination
contour: concepts and construction
1.6.1 Supplementary
contours
1.6.2 Auxiliary
contours
2 Determination of the earth
station coordination area with respect to terrestrial stations
2.1 Earth stations operating
with geostationary space stations
2.1.1 Determination
of the coordinating earth station’s propagation mode (1) contour
2.1.2 Determination
of the coordinating earth station’s propagation mode (2) contour
2.2 Earth stations
operating with non-geostationary space stations
2.2.1 Determination
of coordination area using the TIG method
2.2.2 Determination
of coordination area using the TVG method
3 Determination of the
coordination area between earth stations operating in bidirectionally allocated
frequency bands
3.1 Coordinating and
unknown earth stations operating with geostationary space stations
3.1.1 Determination
of the coordinating earth station’s propagation mode (1) contour
3.1.2 Determination
of the coordinating earth station’s propagation mode (2) contour
3.2 Coordinating or
unknown earth stations operating with non-geostationary space stations
3.2.1 Coordinating
earth station operating with a geostationary space station with respect to
unknown earth stations operating with non-geostationary space stations
3.2.2 Coordinating
earth station operating with a non-geostationary space station with respect to
unknown earth stations operating with geostationary space stations
3.2.3 Coordinating
and unknown earth stations operating with non-geostationary space stations
4 General considerations for the
determination of the propagation mode (1) required distance
4.1 Radio-climatic
information
4.2 Minimum coordination
distance for propagation modes (1) and (2)
4.3 Maximum coordination
distance for propagation mode (1)
4.4 Guidance on
application of propagation mode (1) procedures
5 General considerations for the
determination of the propagation mode (2) required distance
5.1 The required distance
for propagation mode (2)
APPENDIX 1 TO ANNEX 1
Determination of the required distance for propagation mode
(1)
1 Adjustments for earth station
horizon elevation angle and distance
2 Frequencies between 100 MHz and
790 MHz
3 Frequencies between 790 MHz and
60 GHz
4 Frequencies between 60 GHz and
105 GHz
APPENDIX 2 TO ANNEX 1
Determination of the required distance for propagation mode
(2)
1 Overview
2 Maximum calculation distance
3 Calculation of the propagation
mode (2) contour
3.1 Iterative calculations
4 Construction of the propagation
mode (2) contour
APPENDIX 3 TO ANNEX 1
Antenna gain towards the horizon for an earth station
operating with a geostationary space station
1 General
2 Determination of the angular
separation j(a)
3 Determination of antenna gain
APPENDIX 4 TO ANNEX 1
Antenna gain toward the horizon for earth stations operating
with non‑geostationary space stations
1 Determination of the horizon
antenna gain using the TIG method
1.1 Determination of
satellite visibility limits
1.2 Determination of
minimum and maximum horizon gain from the minimum visible elevation angle
profile
1.3 Example calculation of
the horizon antenna gain using the TIG method
2 Determination of the horizon
antenna gain distribution for the TVG method
3 Equations for use in
determining the locations of orbiting satellites
APPENDIX 5 TO ANNEX 1
Determination of the coordination distance using the TVG method
1 Determination of the required
distance using the TVG method
2 Example of the calculation of a
coordination contour using the TVG method
APPENDIX 6 TO ANNEX 1
Determination of the coordination area for a transmitting
earth station with respect to receiving earth stations operating with
geostationary space stations in bidirectionally allocated frequency bands
1 Introduction
2 Determination of the
bidirectional coordination contour for propagation mode (1)
2.1 Calculation of horizon
gain for unknown receiving earth stations operating with geostationary space
stations
2.2 Example coordination
contour calculation for both earth stations operating with geostationary space
stations
2.3 Example coordination
contour calculation for a transmitting earth station operating with non‑geostationary
space stations and a receiving earth station operating with geostationary space
stations using the TVG method
3 Determination of the
bidirectional rain scatter contour
APPENDIX 7 TO ANNEX 1
Determination of auxiliary contours for propagation mode (2)
1 Determination of auxiliary
contours for propagation mode (2)
2 The step-by-step algorithm
3 Reference radiation patterns
for line-of-sight radio-relay system antennas
APPENDIX 8 TO ANNEX 1
Parameters
ANNEX 2
System parameters for determination of the coordination area
around an earth station
1 Introduction
2 Calculation of the permissible
interference power of an interfering emission
2.1 Calculation of the
noise temperature of the receiving system
2.2 Determination of the
factor NL
2.3 Determination of the
factor Ms
2.4 Determination of the
factor W
3 Horizon antenna gain for a
receiving earth station with respect to a transmitting earth station