Recommendation ITU-R P.2170-0 (09/2025) - Propagation characteristics and prediction methods required for lunar radiocommunication
Foreword
Policy on Intellectual Property Right (IPR)
Scope
Annex
TABLE OF CONTENTS
PART A
The Irregular Lunar Model (ILM): Point-to-area mode
     A.1 Introduction
          A.1.1 Preparatory calculations
          A.1.2 Reference attenuation
          A.1.3 Coefficients for the diffraction range
          A.1.4 Diffraction attenuation function
          A.1.5 Coefficients for the line-of-sight range
          A.1.6 The line-of-sight range attenuation function
          A.1.7 Location variability
     A.2 Functions Gx, Fx, Κ, C1Κ, and BΚ.
PART B
The irregular lunar model (ILM): Point-to-point mode
     B.1  Introduction
          B.1.1 Preparatory calculations
          B.1.2 Reference attenuation
          B.1.3 Coefficients for the diffraction range
          B.1.4 Diffraction attenuation function
          B.1.5 Coefficients for the line-of-sight range
          B.1.6 The line-of-sight range attenuation function
          B.1.7 Location variability
     B.2 Functions Gx, Fx, Κ, C1Κ, and BΚ.
PART C
Electrical characteristics of the surface of the Moon
     C.1 Regolith complex relative permittivity
          C.1.1 Inputs to regolith complex relative permittivity
          C.1.2 Regolith depth
          C.1.3 Mineral content
          C.1.4 Bulk density
          C.1.5 Temperature
          C.1.6 Regolith complex relative permittivity at frequencies between 1 MHz and 37 GHz
     C.2 Lunar rock complex relative permittivity
     C.3 Lunar regolith complex relative permeability
     C.4 Complex relative permittivity of regolith and rock mixture
PART D
Prediction of other propagation losses
     D.1 Free-space propagation loss
     D.2 Propagation loss considering the atmosphere of the Earth