Recommendation ITU-R S.1503-4
Policy on Intellectual Property Right (IPR)
Annex 1� Functional description of software for use by
the BR in checking� compliance of non-GSO FSS systems with epfd limits
PART A
A1����
General
������ A1.1���� Purpose
������ A1.2���� Software block-diagram
������ A1.3���� Allocation of responsibilities between
Administrations and the BR for software employment
A2����
Fundamental assumptions
������ A2.1���� Units of measurement
������ A2.2���� Constants
������ A2.3���� The Earth model
������ A2.4���� Constellation types
A3����
Modelling methodology
PART B
B1����
Introduction
������ B1.1���� Background
������ B1.2���� Scope and overview
B2����
BR supplied parameters to software
B3����
Non-GSO system inputs to software
������ B3.1���� Non-GSO constellation parameters
������ B3.2���� Non-GSO space station parameters
������ B3.3���� Non-GSO system operating parameters
B4����
pfd/e.i.r.p. masks
������ B4.1���� Non-GSO downlink pfd mask
������ B4.2���� Non-GSO uplink e.i.r.p. mask
������ B4.3���� Non-GSO inter-satellite e.i.r.p. mask
B5����
Validation of input parameters
������ B5.1���� Non-GSO space station parameters
Test for circular or near-circular orbit:
Test HEO system has w = �p/2:
������ B5.2���� Non-GSO system operating parameters ranges
������ B5.3���� Masks and system operating parameters XML
files
Attachment� to Part B
PART C
C1����
Definition
C2����
Generation of satellite pfd masks
C2.1������ General presentation
C2.2������ Mitigation techniques description
C2.3������ pfd calculation
C2.3.1��� pfd calculation
C2.3.2��� Satellite antenna gain at the point considered at the Earth�s
surface
C2.4������ Methodology
C2.4.1��� Option 1
C2.4.2��� Option 2
C3���������� Generation of e.i.r.p. masks
C3.1������ Generation of earth station e.i.r.p. masks
C3.1.1��� General presentation
C3.1.2��� Mitigation techniques description
C3.1.3��� Earth station antenna pattern
C3.1.4��� Methodology
C3.2������ Generation of space station e.i.r.p. masks
C4���������� pfd and e.i.r.p. mask format
C4.1������ General structure of masks
C4.2������ pfd mask for epfd(down)
C4.3������ e.i.r.p. mask for epfd(up)
C4.4������ e.i.r.p. mask for epfd(IS)
PART D
D1���������� Introduction
D1.1������ Scope
D1.2������ Background
D1.3������ Overview
D1.4������ General assumptions and limitations
D1.5������ Database and interface
D2���������� Determination of runs to execute
D2.1������ Article 22 runs
D2.2������ Number 9.7A of the Radio Regulations
D2.3������ Number 9.7B of the Radio Regulations
D3���������� Worst-case geometry
D3.1������ WCG epfd↓
D3.1.1�� Inputs
D3.1.2�� Algorithm
D3.1.3�� Geometry
D3.2������ WCG epfd↑
D3.2.1�� Inputs
D3.2.2�� GSO system parameters
����������������� D3.2.3���� Algorithm
������ D3.3���� WCG epfdIS
����������������� D3.3.1���� Inputs
����������������� D3.3.2���� Algorithm
����������������� D3.3.3���� Geometry
D4����
Calculation of time step size and number of time steps
������ D4.1���� Simulation time increment and accuracy
������ D4.2���� Description of the procedure for the
determination of minimum downlink simulation time increment
������ D4.3���� Description of the procedure for the
determination of minimum uplink simulation time increment
������ D4.4���� Description of the procedure for the
determination of minimum inter-satellite simulation time increment
������ D4.5���� Derivation of Nhit
������ D4.6���� Total simulation run time
����������������� D4.6.1���� Repeating orbits
����������������� D4.6.2���� Non-repeating orbits
������ D4.7���� Dual time step option
����������������� D4.7.1���� Dual time step option
epfd(down)
����������������� D4.7.2���� Dual time step option
epfd(up)
D5����
epfd calculation description
������ D5.1���� epfd↓ software description
����������������� D5.1.1���� Configuration parameters
����������������� D5.1.2���� Non-GSO system parameters
����������������� D5.1.3���� Run time step parameters
����������������� D5.1.4���� Algorithms and
calculation procedures
����������������� D5.1.5���� pfd mask calculation
����������������� D5.1.6���� Outputs
������ D5.2���� epfd↑ software description
����������������� D5.2.1���� Configuration parameters
����������������� D5.2.2���� Determination of maximum
epfd configuration
����������������� D5.2.3���� Calculation of run steps
����������������� D5.2.4���� Inputs
����������������� D5.2.5���� Production of non-GSO
earth station distribution
����������������� D5.2.6���� Algorithms and
calculation procedures
����������������� D5.2.7���� Calculation of e.i.r.p.
����������������� D5.2.8���� Outputs
������ D5.3���� epfdis software description
����������������� D5.3.1���� Configuration parameters
D5.3.2�� Determination of maximum epfd configuration
D5.3.3�� Calculation of run steps
D5.3.4�� Input parameters
D5.3.5�� Algorithms and calculation procedures
D5.3.6�� Outputs
D6���������� Geometry and algorithms
D6.1������ Earth coordinates system
D6.2������ GSO satellite coordinate system
D6.3������ Non-GSO satellite coordinate system
D6.3.1�� Non-GSO satellite orbit parameters
D6.3.2�� Non-GSO satellite orbit predictor
Line of nodes
Orbit precession in ascending node longitude
Perigee argument precession
Use of precession terms
D6.3.3�� Conversion to Generic Cartesian-based Vectors
D6.3.4�� Non-GSO satellite orbit station keeping
D6.3.5�� Forced orbit precession
D6.3.6�� Combining the orbit models
D6.3.7�� Mapping orbit parameters from SRS data
D6.4������ Geometry
D6.4.1�� Distance between two stations
D6.4.2�� Distance to Earth horizon
D6.4.3�� Satellite visibility check
D6.4.4�� Angle to GSO arc and DLongitude
D6.4.5�� Satellite and earth station azimuth and elevation
D6.5������ Gain patterns
D6.5.1�� GSO earth station gain patterns
D6.5.2�� GSO satellite gain pattern
D7���������� Structure and format of results
D7.1������ Go/No-go decision
D7.1.1�� Overall description of the decision process
D7.1.2�� Production of the CDF
D7.1.3�� Comparison procedure
D7.1.4�� Decision process
D7.2������ Background information to decision
D7.3������ Format for output
D7.3.1�� Statement of the result of the compliance test
D7.3.2�� Summary table
����������������� D7.3.3���� Probability table
PART E
E1����
Evaluation of the computation accuracy of the candidate
software
E2����
Evaluation of the epfd(↓/↑) statistics
obtained by the BR
E3����
Verification of the pfd masks
E4����
Re-testing of the BR software after any modifications
or upgrades
PART F
F1����
Operating system
F2����
Interfaces to existing software and databases
F3����
User manual