CONTENTS - RECOMMENDATION ITU-R S.1503-3 - Functional description to be used in developing software tools for determining conformity of non-geostationary-satellite orbit fixed-satellite service systems or networks with limits contained in Article 22 of the Radio Regulations

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
       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     Article 9.7A
       D2.3     Article 9.7B
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 epfd_IS
                  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 N_hit
       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     Outputs
       D5.3     epfd_is 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
                  D6.3.3     Non-GSO satellite orbit predictor
                  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