Informative | ionospheric | P.684, P.368 | LF-MF | Calculation of LF-MF field strength and phase with parabolic model | 4 | Software | ![Calculation of LF-MF field strength and phase with parabolic model.zip Calculation of LF-MF field strength and phase with parabolic model.zip](/_layouts/15/images/iczip.gif?rev=43) | |
Informative | ionospheric | P.1239 | ITU-R ionospheric characteristics | ITU-R ionospheric characteristics | 2 | Software | ![ITU-R ionospheric characteristics.zip ITU-R ionospheric characteristics.zip](/_layouts/15/images/iczip.gif?rev=43) | |
Informative | ionospheric | | HF | Databank D2 - HF field strength value measurements in Germany | 1 | Data | ![Databank D2 - HF field strength value measurements in Germany.zip Databank D2 - HF field strength value measurements in Germany.zip](/_layouts/15/images/iczip.gif?rev=43) | |
Informative | ionospheric | | LF-MF | LF-MF skywave databank | 1 | Data | ![LF-MF skywave databank.aspx LF-MF skywave databank.aspx](/_layouts/15/images/ichtm.gif?rev=43) | |
Informative | ionospheric | P.533, P.1239 | ITURHFPROP | Software for the prediction of the performance of HF circuits based on Recommendation ITU-R P.533 | 14.3 | Software | ![ITU-R-HF_14.3.zip ITU-R-HF_14.3.zip](/_layouts/15/images/iczip.gif?rev=43) | MD5Sum: 7CBF3FA7023C3B87F8035294CD7995A3 |
Informative | ionospheric | P.533 | HF | HF sky-wave propagation (available from the web site of U.S. Department of Commerce NTIA-ITS) | | Software | ![HF sky-wave propagation (available from the web site of U.S. Department of Commerce NTIA-ITS).html HF sky-wave propagation (available from the web site of U.S. Department of Commerce NTIA-ITS).html](/_layouts/15/images/ichtm.gif?rev=43) | |
Informative | tropospheric | P.835 | Atmospheric profile data | Atmospheric profile data | 6 | Data | ![Atmospheric profile data.zip Atmospheric profile data.zip](/_layouts/15/images/iczip.gif?rev=43) | |
Informative | tropospheric | | Rain scatter (SCAT) | Rain scatter (SCAT) | 1 | Software | ![Rain scatter (SCAT).zip Rain scatter (SCAT).zip](/_layouts/15/images/iczip.gif?rev=43) | |
Informative | tropospheric | P.1546 | Field strength values | Tabulated values for the field strength curves of Rec. ITU-R P.1546 | 6 | Data | ![Tabulated field strength values.xls Tabulated field strength values.xls](/_layouts/15/images/icxls.png?rev=43) | |
Informative | tropospheric | P.526 | Diffraction loss | UTD formulation for diffraction loss due to finitely conducting wedge | 15 | Software | ![UTD formulation for diffraction loss due to finitely conducting wedge.zip UTD formulation for diffraction loss due to finitely conducting wedge.zip](/_layouts/15/images/iczip.gif?rev=43) | |
Informative | tropospheric | P.837 | Characteristics of precipitation for propagation modelling | Annex 1: Prediction method for a given annual probability and location | 7 | Software | ![1_SW_itur_p0837_7_annex1.zip 1_SW_itur_p0837_7_annex1.zip](/_layouts/15/images/iczip.gif?rev=43) | |
Informative | tropospheric | P.526-15, P.452-18, P.1812-7, P.2001-5 | Diffraction prediction method | Validation examples for the delta Bullington diffraction prediction method | 13.2 | Validation example | ![Validation examples for the delta Bullington diffraction prediction method.docx Validation examples for the delta Bullington diffraction prediction method.docx](/_layouts/15/images/icdocx.png?rev=43) | |
Informative | tropospheric | P.453 | Radio Refractivity | Radio Refractivity – Elevated and surface duct data | 14 | Data | ![elevated_and_surface_duct.zip elevated_and_surface_duct.zip](/_layouts/15/images/iczip.gif?rev=43) | |
Informative | tropospheric | P.452 | Point-to-point (interference) | Excel implementation of a prediction procedure for the evaluation of interference between stations on the surface of the Earth at frequencies above about 0.1 GHz et version | 16.1 | Software | ![ITUR_P_452_16_V1_xls.zip ITUR_P_452_16_V1_xls.zip](/_layouts/15/images/iczip.gif?rev=43) | |
Informative | tropospheric | P.368 | Ground-wave propagation curves for frequencies between 10 kHz and 30 MHz | M-script implementation for the calculation of the field strength and basic transmission losses based on the LFMF-smoothEarth model | 1 | Software | ![M-script implementation for the calculation of the field strength and basic transmission losses based on the LFMF smooth Earth model.zip M-script implementation for the calculation of the field strength and basic transmission losses based on the LFMF smooth Earth model.zip](/_layouts/15/images/iczip.gif?rev=43) | |
Informative | tropospheric | P.528 | Propagation curves for aeronautical mobile and radionavigation services | Executable software to generate basic transmission loss values and field strength curves of Rec. ITU-R P.528 | 5.0.1 | Software | ![R19-WP3K-C-0264!N06-P1!ZIP-E.zip R19-WP3K-C-0264!N06-P1!ZIP-E.zip](/_layouts/15/images/iczip.gif?rev=43) | |
Informative | tropospheric | P.528 | Propagation curves for aeronautical mobile and radionavigation services | M-script software implementation of Rec. ITU-R P.528 | 5 | Software | ![Matlab implementation of Recommendation ITU-R P.528-5 - Ver 5.0.1.zip Matlab implementation of Recommendation ITU-R P.528-5 - Ver 5.0.1.zip](/_layouts/15/images/iczip.gif?rev=43) | |
Informative | tropospheric | P.1546 | Path general propagation method | M-file script implementation of a method for point-to-area predictions for terrestrial services in the frequency range 30 MHz to 3 000 MHz | 6.2 | Software | ![R19-WP3K-C-0264!N05-P1!ZIP-E.zip R19-WP3K-C-0264!N05-P1!ZIP-E.zip](/_layouts/15/images/iczip.gif?rev=43) | |
Informative | tropospheric | P.1546 | Validation examples | Validation examples for software implementations of Recommendation ITU-R P.1546 | 6.2 | Validation example | ![R19-WP3K-C-0264!N05-P2!ZIP-E.zip R19-WP3K-C-0264!N05-P2!ZIP-E.zip](/_layouts/15/images/iczip.gif?rev=43) | |
Informative | tropospheric | P.368 | Ground-wave propagation method for frequencies between 10 kHz and 30 MHz | Executable for the calculation of the field strength and basic transmission losses based on the LFMF-smoothEarth model | 10 | Software | ![R19-WP3L-C-0072!P2!ZIP-E.zip R19-WP3L-C-0072!P2!ZIP-E.zip](/_layouts/15/images/iczip.gif?rev=43) | |
Informative | tropospheric | P.453-14, P.618-14, P.676-13, P.836-6, P.837-7, P.838-3, P.839-4, P.840-9, P.1511-2, P.1623-1, P.1815-1, P.2145-0 | Earth-space prediction methods | Validation examples for parts of Recs. ITU-R P.453-14, P.618-14, P.676-13, P.836-6, P.837-7, P.838-3, P.839-4, P.840-9, P.1511-2, P.1623-1, P.1815-1, P.2145-0 | 8.1.0 | Validation example | ![CG-3M3J-13-ValEx-Rev8.1.0.xlsx CG-3M3J-13-ValEx-Rev8.1.0.xlsx](/_layouts/15/images/icxlsx.png?rev=43) | |
Informative | tropospheric | P.618 | Joint probability of attenuation exceeded | Python implementation of an estimation of the joint probability for two stations in a diversity configuration, Section 2.2.4.1 of Rec. ITU-R P.618-14 | 14.2241_v2 | Software | ![P_618_14_joint_prob_py.zip P_618_14_joint_prob_py.zip](/_layouts/15/images/iczip.gif?rev=43) | See README file |
Informative | tropospheric | P.618 | Joint probability of attenuation exceeded | M-file script implementation of an estimation of the joint probability for two stations in a diversity configuration, Section 2.2.4.1 of Rec. ITU-R P.618-14 | 14.2241_v2 | Software | ![P_618_14_joint_prob_m.zip P_618_14_joint_prob_m.zip](/_layouts/15/images/iczip.gif?rev=43) | See README file |
Informative | tropospheric | P.1144 | Numerical integration | Gaussian quadrature points and weights for numerical integration | 12 | Data | ![Gaussian quadrature points and weights for numerical integration_V12.zip Gaussian quadrature points and weights for numerical integration_V12.zip](/_layouts/15/images/iczip.gif?rev=43) | |
Informative | tropospheric | P.1812 | Path specific propagation method | M-file script implementation of a path-specific propagation prediction method for point-to-area terrestrial services in the VHF and UHF bands | 6.1 | Software | ![R19-WP3K-C-0335!N02-P1!ZIP-E.zip R19-WP3K-C-0335!N02-P1!ZIP-E.zip](/_layouts/15/images/iczip.gif?rev=43) | |
Informative | tropospheric | P.1812 | Validation examples | Validation examples for software implementations of Recommendation ITU-R P.1812 | 6.1 | Validation example | ![R19-WP3K-C-0335!N02-P2!ZIP-E.zip R19-WP3K-C-0335!N02-P2!ZIP-E.zip](/_layouts/15/images/iczip.gif?rev=43) | |
Informative | tropospheric | P.452 | Point-to-point (interference) | M-file script implementation of a prediction procedure for the evaluation of interference between stations on the surface of the Earth at frequencies above about 100 MHz | 17.1 | Software | ![R19-WP3M-C-0449!N27-P1!ZIP-E.zip R19-WP3M-C-0449!N27-P1!ZIP-E.zip](/_layouts/15/images/iczip.gif?rev=43) | |
Informative | tropospheric | P.452 | Validation examples | Validation examples for software implementation of Recommendation ITU-R P.452 | 17.1 | Validation example | ![R19-WP3M-C-0449!N27-P2!ZIP-E.zip R19-WP3M-C-0449!N27-P2!ZIP-E.zip](/_layouts/15/images/iczip.gif?rev=43) | |
Informative | tropospheric | P.2001 | Wide range propagation model | M-file script implementation of a general purpose wide-range terrestrial propagation model in the frequency range 30 MHz to 50 GHz | 4.1 | Software | ![R19-WP3M-C-0449!N28-P1!ZIP-E.zip R19-WP3M-C-0449!N28-P1!ZIP-E.zip](/_layouts/15/images/iczip.gif?rev=43) | |
Informative | tropospheric | P.2001 | Wide range propagation model | Validation examples for software implementations of Recommendation ITU-R P.2001 | 4.1 | Validation example | ![R19-WP3M-C-0449!N28-P2!ZIP-E.zip R19-WP3M-C-0449!N28-P2!ZIP-E.zip](/_layouts/15/images/iczip.gif?rev=43) | |
Informative | tropospheric | P.2108, P.2109 | Calculation of clutter and building entry loss | Implementations of the calculation methods for clutter and building entry losses | 2 | Software | ![Clutter and BEL workbook_V2.xlsx Clutter and BEL workbook_V2.xlsx](/_layouts/15/images/icxlsx.png?rev=43) | |
Informative | tropospheric | P.372 | Radio noise | M-file script for processing white Gaussian noise measurements | 1 | Software | ![P.372_M-file script for processing white Gaussian noise measurements.docx P.372_M-file script for processing white Gaussian noise measurements.docx](/_layouts/15/images/icdocx.png?rev=43) | |
Informative | tropospheric | P.452 | Validation examples | Validation examples for software implementation of Recommendation ITU-R P.452 | 18.0 | Validation example | ![Validation examples for Recommendation ITU-R P.452-18 - Ver 18.0.zip Validation examples for Recommendation ITU-R P.452-18 - Ver 18.0.zip](/_layouts/15/images/iczip.gif?rev=43) | |
Informative | tropospheric | P.452 | Point-to-point (interference) | M-file script implementation of a prediction procedure for the evaluation of interference between stations on the surface of the Earth at frequencies above about 100 MHz | 18.0 | Software | ![Matlab implementation of Recommendation ITU-R P.452-18 - Ver 18.0.zip Matlab implementation of Recommendation ITU-R P.452-18 - Ver 18.0.zip](/_layouts/15/images/iczip.gif?rev=43) | |
Informative | tropospheric | P.2146 | Sea surface bistatic scattering | M-file script implementation of the sea surface bistatic scattering | 1 | Software | ![sea_surface_bistatic_scattering.zip sea_surface_bistatic_scattering.zip](/_layouts/15/images/iczip.gif?rev=43) | |
Informative | tropospheric | P.837 | Rainfall rate exceeded for a given probability of the average year and a given location | Excel implementation of Recommendation ITU-R P.837-6, Annex 1 | 6.1 | Software | ![P_837-6_Annex_1.ZIP P_837-6_Annex_1.ZIP](/_layouts/15/images/iczip.gif?rev=43) | |
Informative | tropospheric | P.838 | Specific attenuation model for rain for use in prediction methods | Excel implementation of Recommendation ITU-R P.838-3 | 3.1 | Software | ![p_838_3.zip p_838_3.zip](/_layouts/15/images/iczip.gif?rev=43) | |
Informative | tropospheric | P.839 | Rain height model for prediction methods | Excel implementation of Recommendation ITU-R P.839-4 | 4.1 | Software | ![p_839_4.zip p_839_4.zip](/_layouts/15/images/iczip.gif?rev=43) | |
Normative | ionospheric | P.534 | Method for calculating sporadic-E field strength | Digital maps of the sporadic E critical frequency, exceeded for annual average time percentages of 50%, 10%, 1% and 0.1% | 6 | Data | ![P.534 _ Method for calculating sporadic-E field strength.html P.534 _ Method for calculating sporadic-E field strength.html](/_layouts/15/images/ichtm.gif?rev=43) | |
Normative | ionospheric | P.531 | Ionospheric propagation data and prediction methods required for the design of satellite services and systems | Electron density distribution (NeQuick2) | 12 | Software | ![P.531 _ Ionospheric propagation data and prediction methods required for the design of satellite networks and systems_08-2023.html P.531 _ Ionospheric propagation data and prediction methods required for the design of satellite networks and systems_08-2023.html](/_layouts/15/images/ichtm.gif?rev=43) | |
Normative | ionospheric | P.531 | Ionospheric propagation data and prediction methods required for the design of satellite services and systems | Ionospheric scintillations (GISM) | 5.1 | Software | ![P.531 _ Ionospheric propagation data and prediction methods required for the design of satellite networks and systems_GISM.html P.531 _ Ionospheric propagation data and prediction methods required for the design of satellite networks and systems_GISM.html](/_layouts/15/images/ichtm.gif?rev=43) | |
Normative | tropospheric | P.839 | Rain height model for prediction methods | 0 degree isotherm height (in km and above mean sea level) | 4 | Data | ![0 degree isotherm height (in km and above mean sea level).html 0 degree isotherm height (in km and above mean sea level).html](/_layouts/15/images/ichtm.gif?rev=43) | |
Normative | tropospheric | P.678 | Characterization of the natural variability of propagation phenomena | Climatic ratio | 3 | Data | ![Climatic ratio.html Climatic ratio.html](/_layouts/15/images/ichtm.gif?rev=43) | |
Normative | tropospheric | P.837 | Characteristics of precipitation for propagation modelling | Annex 1: Maps of monthly total rainfall | 7 | Data | ![Annex1.html Annex1.html](/_layouts/15/images/ichtm.gif?rev=43) | |
Normative | tropospheric | P.837 | Characteristics of precipitation for propagation modelling | Annex 2: Conversion of rain rate statistics with different integration time | 7 | Software | ![Annex2.html Annex2.html](/_layouts/15/images/ichtm.gif?rev=43) | |
Normative | tropospheric | P.1510 | Mean surface temperature | Annex 1: Annual and Monthly maps | 1 | Data | ![Rec. P.1510-1 Supplement.html Rec. P.1510-1 Supplement.html](/_layouts/15/images/ichtm.gif?rev=43) | |
Normative | tropospheric | P.834 | Meteorological parameters | Coefficients required to calculate excess radio path length | 9 | Data | ![Coefficients required to calculate excess radio path length.html Coefficients required to calculate excess radio path length.html](/_layouts/15/images/ichtm.gif?rev=43) | |
Normative | tropospheric | P.836 | Water vapour: surface density and total columnar content | Annual and monthly surface water vapour density and total columnar content | 6 | Data | ![Annual and monthly surface water vapour density and total solumnar content.html Annual and monthly surface water vapour density and total solumnar content.html](/_layouts/15/images/ichtm.gif?rev=43) | |
Normative | tropospheric | P.836 | Topographical altitude digital map | Topographical altitudes for surface density and total columnar content | 6 | Data | ![Topographical altitudes for surface density and total columnar content.html Topographical altitudes for surface density and total columnar content.html](/_layouts/15/images/ichtm.gif?rev=43) | |
Normative | tropospheric | P.835 | Pressure, Temperature and Water Vapour data | Meteorological parameters Pressure, Temperature and Water Vapour data for atmospheric vertical profiles | 6 | Data | ![Meteorological parameters Pressure, Temperature and Water Vapour data for atmospheric vertical profiles.html Meteorological parameters Pressure, Temperature and Water Vapour data for atmospheric vertical profiles.html](/_layouts/15/images/ichtm.gif?rev=43) | |
Normative | tropospheric | P.681 | Mixed propagation conditions | Physical-statistical wideband model for mixed propagation conditions | 11.4 | Software | ![P.681 _ Propagation data required for the design systems in the land mobile-satellite service.html P.681 _ Propagation data required for the design systems in the land mobile-satellite service.html](/_layouts/15/images/ichtm.gif?rev=43) | |
Normative | tropospheric | P.840 | Attenuation due to clouds and fog | Annual and monthly statistics (mean, standard deviation and CCFD) of integrated cloud liquid water content (Parts 01 to 13) | 9 | Data | ![P.840 _ Attenuation due to clouds and fog.html P.840 _ Attenuation due to clouds and fog.html](/_layouts/15/images/ichtm.gif?rev=43) | |
Normative | tropospheric | P.840 | Integrated cloud liquid water content | Annual statistics of integrated cloud liquid water content approximated by a log-normal distribution (Part 14) | 9 | Data | ![P.840 _ Attenuation due to clouds and fog_2.html P.840 _ Attenuation due to clouds and fog_2.html](/_layouts/15/images/ichtm.gif?rev=43) | |
Normative | tropospheric | P.1511 | Topography | Topography (0.08333° resolution) | 2 | Data | ![P.1511 _ Topography for Earth-to-space propagation modelling.html P.1511 _ Topography for Earth-to-space propagation modelling.html](/_layouts/15/images/ichtm.gif?rev=43) | |
Normative | tropospheric | P.617 | Propagation prediction techniques and data required for the design of trans-horizon radio-relay systems | Climatic zone map | 5 | Data | ![P.617 _ Propagation prediction techniques and data required for the design of trans-horizon radio-relay systems.html P.617 _ Propagation prediction techniques and data required for the design of trans-horizon radio-relay systems.html](/_layouts/15/images/ichtm.gif?rev=43) | |
Normative | tropospheric | P.1511 | Topography | Undulation in the 2008 version of the U.S. National Geospatial-Intelligence Agency Earth Gravitational Model) | 2 | Data | ![P.1511 _ Topography for Earth-to-space propagation modelling_2.html P.1511 _ Topography for Earth-to-space propagation modelling_2.html](/_layouts/15/images/ichtm.gif?rev=43) | |
Normative | tropospheric | P.453 | Radio Refractivity | Monthly and annual radio refractivity gradient in the lowest (65 m) and 1 km layers of the atmosphere | 14 | Data | ![P.453 _ The radio refractive index_ its formula and refractivity dataV14.html P.453 _ The radio refractive index_ its formula and refractivity dataV14.html](/_layouts/15/images/ichtm.gif?rev=43) | |
Normative | tropospheric | P.453 | Radio Refractivity | Radio Refractivity - Wet term of surface refractivity | 14 | Data | ![P.453 _ The radio refractive index_ its formula and refractivity dataV3.html P.453 _ The radio refractive index_ its formula and refractivity dataV3.html](/_layouts/15/images/ichtm.gif?rev=43) | |
Normative | tropospheric | P.528 | Propagation curves for aeronautical mobile and radionavigation services | Tabulated values for the field strength curves of Rec. ITU-R P.528 | 5 | Data | ![Tabulated values for the field strength curves of Rec. ITU-R P.528.html Tabulated values for the field strength curves of Rec. ITU-R P.528.html](/_layouts/15/images/ichtm.gif?rev=43) | |
Normative | tropospheric | P.528 | Propagation prediction for aeronautical mobile and radionavigation services | Software code to generate basic transmission loss values and curves of Rec. ITU-R P.528 | 5 | Software | ![Software code to generate basic transmission loss values and curves of Rec. ITU-R P.528.html Software code to generate basic transmission loss values and curves of Rec. ITU-R P.528.html](/_layouts/15/images/ichtm.gif?rev=43) | |
Normative | tropospheric | P.2148 | Digital maps related to surface wind speed statistics | Digital maps of the worldwide average annual statistics of wind speed at a height of 10 m above the surface of the Earth | 0 | Data | ![Digital maps of the worldwide average annual statistics of wind speed at a height of 10 m above the surface of the Earth.html Digital maps of the worldwide average annual statistics of wind speed at a height of 10 m above the surface of the Earth.html](/_layouts/15/images/ichtm.gif?rev=43) | |
Normative | tropospheric | P.2145 | Digital maps related to the calculation of gaseous attenuation and related effects | Monthly and annual maps for total (barometric) pressure, surface temperature and surface water vapour density, integrated water vapour content and annual statistics of integrated water vapour content approximated by a Weibull distribution | 0 | Data | ![Monthly and annual maps for total (barometric) pressure, surface temperature and surface water vapour density, integrated water vapour content and annual statistics of integrated water vapour content approximated by a Weibull distribution.html Monthly and annual maps for total (barometric) pressure, surface temperature and surface water vapour density, integrated water vapour content and annual statistics of integrated water vapour content approximated by a Weibull distribution.html](/_layouts/15/images/ichtm.gif?rev=43) | |
Normative | tropospheric | P.368 | Ground-wave propagation method for frequencies between 10 kHz and 30 MHz | Software code for the calculation of the field strength and basic transmission losses based on the LFMF-smoothEarth model | 10 | Software | ![Software code for the calculation of the field strength and basic transmission losses based on the LFMF-smoothEarth model.html Software code for the calculation of the field strength and basic transmission losses based on the LFMF-smoothEarth model.html](/_layouts/15/images/ichtm.gif?rev=43) | |
Normative | tropospheric | P.452 | Point-to-point (interference) | Atmospheric radio refractivity maps used to predict anomalous propagation | 18 | Data | ![Atmospheric radio refractivity maps used to predict anomalous propagation_V18.html Atmospheric radio refractivity maps used to predict anomalous propagation_V18.html](/_layouts/15/images/ichtm.gif?rev=43) | |
Normative | tropospheric | P.1812 | A path-specific propagation prediction method for point-to-area terrestrial services in the VHF and UHF bands | Average sea level surface refractivity and average annual difference in values of refractivity | 7 | Data | ![Average sea level surface refractivity and average annual difference in values of refractivity_V7.html Average sea level surface refractivity and average annual difference in values of refractivity_V7.html](/_layouts/15/images/ichtm.gif?rev=43) | |
Normative | tropospheric | P.2001 | Wide range propagation model | Digital map files for the wide range propagation model in Recommendation ITU-R P.2001 | 5 | Data | ![Digital map files for the wide range propagation model in Recommendation ITU-R P.2001_V5.html Digital map files for the wide range propagation model in Recommendation ITU-R P.2001_V5.html](/_layouts/15/images/ichtm.gif?rev=43) | |
Normative | tropospheric | P.530 | Propagation data and prediction methods required for the design of terrestrial line-of-sight systems | Logarithm of the geoclimatic factor and the average worst month refractivity increase with height over the lowest 75 m of the atmosphere | 18 | Data | ![P.530 _ Propagation data and prediction methods required for the design of terrestrial line-of-sight systems.html P.530 _ Propagation data and prediction methods required for the design of terrestrial line-of-sight systems.html](/_layouts/15/images/ichtm.gif?rev=43) | |