Appendix 1: Terms and definitions relating to space radiocommunications
The information in this appendix was originally extracted from Report 204-6, of the same title, contained in Section 4A of Volume IV Part 1, Fixed Satellite Service and, more recently, updated with information from Recommendations 310-9 (Definitions of Terms Relating to Propagation in Non-Ionized Media) and 311-6 (Presentation of Data in Studies of Tropospheric-Wave Propagation), formerly in Volume V, 'Propagation in Non-Ionized Media', of the CCIR Green Books, and now in ITU-R Study Group 3 Recommendations.