CONTENTS

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
 1 General
        1.1 Purpose
        1.2 Software block-diagram
        1.3 Allocation of responsibilities between Administrations and the BR for software employment
 2 Fundamental assumptions
        2.1 Units of measurement
        2.2 Constants
        2.3 The Earth model
        2.4 Constellation types
 3 Modelling methodology
 1 Introduction
        1.1 Background
        1.2 Scope and overview
 2 BR supplied parameters to software
 3 Non-GSO system inputs to software
        3.1 Non-GSO constellation parameters
        3.2 Non-GSO space station parameters
 4 pfd / e.i.r.p. masks
        4.1 Non-GSO downlink pfd mask
        4.2 Non-GSO uplink e.i.r.p. mask
        4.3 Non-GSO inter-satellite e.i.r.p mask
Attachment to Part B
 1 Definition
 2 Generation of satellite pfd masks
        2.1 General presentation
        2.2 Mitigation techniques description
        2.3 pfd calculation
                  2.3.1 pfd calculation
                  2.3.2 Satellite antenna gain at the point considered at the Earth’s surface
        2.4 Methodology
                  2.4.1 Option 1
                  2.4.2 Option 2
 3 Generation of e.i.r.p. masks
        3.1 Generation of earth station e.i.r.p. masks
                  3.1.1 General presentation
                  3.1.2 Mitigation techniques description
                  3.1.3 Earth station antenna pattern
                  3.1.4 Methodology
        3.2 Generation of space station e.i.r.p. masks
 4 pfd and e.i.r.p. mask format
        4.1 General structure of masks
        4.2 pfd mask for epfd(down)
        4.3 e.i.r.p. mask for epfd(up)
        4.4 e.i.r.p. mask for epfd(IS)
 1 Introduction
        1.1 Scope
        1.2 Background
        1.3 Overview
        1.4 General assumptions and limitations
        1.5 Database and interface
 2 Determination of runs to execute
        2.1 Article 22 runs
        2.2 Article 9.7A
        2.3 Article 9.7B
 3 Worst case geometry
        3.1 WCG epfd↓
                  3.1.1 Inputs
                  3.1.2 Algorithm
                  3.1.3 Geometry
        3.2 WCG epfd↑
                  3.2.1 Inputs
                  3.2.2 Algorithm
                  3.2.3 Geometry
        3.3 WCG epfd_IS
                  3.3.1 Inputs
                  3.3.2 Algorithm
 4 Calculation of time step size and number of time steps
        4.1 Simulation time increment and accuracy
        4.2 Description of the procedure for the determination of minimum downlink simulation time increment
        4.3 Description of the procedure for the determination of minimum uplink simulation time increment
        4.4 Description of the procedure for the determination of minimum inter-satellite simulation time increment
        4.5 Derivation of N_hit
        4.6 Total simulation run time
                  4.6.1 Repeating orbits
                  4.6.2 Non-repeating orbits
        4.7 Dual time step option
                  4.7.1 Dual time step option epfd(down)
                  4.7.2 Dual time step option epfd(up)
 5 epfd calculation description
        5.1 epfd¯ software description
                  5.1.1 Configuration parameters
                  5.1.2 Non-GSO system parameters
                  5.1.3 Run time step parameters
                  5.1.4 Algorithms and calculation procedures
                  5.1.5 pfd mask calculation
                  5.1.6 Outputs
        5.2 epfd↑ software description
                  5.2.1 Configuration parameters
                  5.2.2 Determination of maximum epfd configuration
                  5.2.3 Calculation of run steps
                  5.2.4 Inputs
                  5.2.5 Production of non-GSO earth station distribution
                  5.2.6 Algorithms and calculation procedures
                  5.2.7 Outputs
        5.3 epfd_is software description
                  5.3.1 Configuration parameters
                  5.3.2 Determination of maximum epfd configuration
                  5.3.3 Calculation of run steps
                  5.3.4 Input parameters
                  5.3.5 Algorithms and calculation procedures
                  5.3.6 Outputs
 6 Geometry and algorithms
        6.1 Earth coordinates system
        6.2 GSO satellite coordinate system
        6.3 Non-GSO satellite coordinate system
                  6.3.1 Non-GSO satellite orbit parameters
                  6.3.2 Non-GSO satellite orbit predictor
Line of nodes
Use of precession terms
                  6.3.3 Non-GSO satellite orbit station keeping
                  6.3.4 Forced orbit precession
                  6.3.5 Combining the orbit models
                  6.3.6 Mapping orbit parameters from SRS data
        6.4 Geometry
                  6.4.1 Distance between two stations
                  6.4.2 Distance to Earth horizon
                  6.4.3 Satellite visibility check
                  6.4.4 Angle to GSO arc and DLongitude
                  6.4.5 Satellite azimuth and elevation
        6.5 Gain patterns
                  6.5.1 GSO earth station gain patterns
                  6.5.2 GSO satellite gain pattern
 7 Structure and format of results
        7.1 Go/No-go decision
                  7.1.1 Overall description of the decision process
                  7.1.2 Production of the CDF
                  7.1.3 Comparison procedure
                  7.1.4 Decision process
        7.2 Background information to decision
        7.3 Format for output
                  7.3.1 Statement of the result of the compliance test
                  7.3.2 Summary table
                  7.3.3 Probability table
 1 Evaluation of the computation accuracy of the candidate software
 2 Evaluation of the epfd(↓/↑) statistics obtained by the BR
 3 Verification of the pfd masks
 4 Re-testing of the BR software after any modifications or upgrades
 1 Operating system
 2 Interfaces to existing software and databases
 3 User manual