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Resources – EPFD Support

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Questions & Answers

Resources

About ITU

Radiocommunication

Standardization

Development

Resources

On this page you may find reference, training or educational materials relating to EPFD examination.

Input data

Data required for satellite networks subject Article 22 EPFD limits (Nos. 22.5C, 22.5D, 22.5E and 22.5L) (link)

Presentation materials

Presentation materials are provided below.

World Radiocommunication Seminar 2022 (October 2022)

Submission of non-geostationary satellite systems and networks subject to coordination (link)

the apogee and perigee (animated gif)

the inclination angle (animated gif)

the argument of perigee (animated gif)

the phase angles (animated gif)

the RAAN and LAN (animated gif)

Examination of non-geostationary satellite systems and networks including EPFD (link to presentation and exercise, YouTube live demo)

World Radiocommunication Seminar 2020 (November 2020)

Non-geostationary satellite systems and networks (link, exercise, YouTube video)

Submission of non-geostationary satellite systems and networks subject to coordination (link)

Other events

Workshop on non-geostationary satellite issues, 21st April 2016

YouTube videos

Non-geostationary satellite systems and networks

Examination of non-geostationary satellite systems and networks including EPFD

Additional resources

EPFD Prepare data preparation and validation software (also distributed within Space Software GIBC package)

Version 1.8.0 (SNS v10)

In case of using databases in SNS v9.1 format please download EPFD Prepare v1.5.9.

EPFDPrepareSetup v1.8.0 (SNS v10)

EPFDPrepare Setup v1.5.9 (SNS v9.1)

EPFD Static software to calculate RR No. 9.7B coordination tresholds using ITU-R Recommendation S.1714

Version 1.8.8 – Update supporting new SNS v10 structure.

EPFDStatic Setup v1.8.8 (June 2026)

EPFDStatic Technical Annex and Guide

PFD Mask Viewer a software tool to view PFD masks used in EPFD examination

PFD Mask Viewer v2.5.3 (September 2025)

PFD Mask Viewer User Guide

radians.vis a small tool to visualyse orbits presented in non-GSO submission using RR Appendix 4 data elements to propagate orbits, provide coverage and visibility statistics.

radians.vis

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