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Propagation Fundamentals

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Contributions��
�	Number�	Title	Source	AI/Question	Date
�	[ 106 ] � �	Proposed revision of Recommendation ITU-R P.1409-2 - Propagation data and prediction methods for systems using high altitude platform stations and other elevated stations in the stratosphere at frequencies greater than about 1 GHz � �	Japan �	�	2022-05-23
�	[ 105 ] � �	Draft of a proposed revision to Recommendation ITU-R P.838-3 - New Annex on the variability of rain specific attenuation at 80-200 GHz � �	Spain �	�	2022-05-23
�	[ 104 ] � �	Characterization of the melting layer using a MRR-2 radar � �	Spain �	�	2022-05-23
�	[ 103 ] � �	Height of the 0� isotherm: Variability and comparison of estimations from radiosondes and ERAS � �	Spain �	�	2022-05-23
�	[ 102 ] � �	Proposed revision of Recommendation ITU-R P.525-4 - Calculation of free-space attenuation � �	Russian Federation �	�	2022-05-19
�	[ 101 ] � �	Proposal on slant path atmospheric attenuation � �	Russian Federation �	�	2022-05-19
�	[ 100 ] � (Rev.1)�	Proposed revision of Recommendation ITU-R P.2040-2 - Additional data of the electrical properties of the construction materials � �	Korea (Republic of) �	�	2022-05-17
�	[ 99 ] � �	Proposed revision to Recommendation ITU-R P.838-3 - Attenuation model proposal for rain at 240-300 GHz � �	Korea (Republic of) �	�	2022-05-17
�	[ 98 ] � �	Proposed revision to Recommendation ITU-R P.2040-2 - The measurement and proposal of electrical properties of building materials from 220 to 330 GHz � �	Korea (Republic of) �	�	2022-05-17
�	[ 97 ] � �	Submission of rain attenuation statistics at 240, 270 and 300 GHz for DBSG-3 Table I-1 � �	Korea (Republic of) �	�	2022-05-17
�	[ 96 ] � �	Discussion document on diffuse scattering model of random rough surface � �	Korea (Republic of) �	�	2022-05-17
�	[ 95 ] � �	Building entry loss measurements at 47 AND 65 MHz � �	Korea (Republic of) �	�	2022-05-17
�	[ 94 ] � �	Proposed revision to Recommedation ITU-R P.2109-1: Addition of a new building type to the building entry loss model � �	Korea (Republic of) �	�	2022-05-17
�	[ 93 ] � �	Proposed to revision Recommendation ITU-R P.2040-2 - The measurement of electrical properties of interior building material in the frequency range 220 GHz to 450 GHz � �	Korea (Republic of) �	�	2022-05-17
�	[ 92 ] � �	Proposed revision to Recommendation ITU-R P.833-10 - Statistical foliage effect measurements in various irregular shapes of broadleaf trees and empirical model proposal at 2-10 GHz � �	Korea (Republic of) �	�	2022-05-17
�	[ 91 ] � �	Preliminary draft revision of Recommendation ITU-R P.526-15 - Propagation by diffraction � �	United States of America �	�	2022-05-13
�	[ 90 ] � �	Draft revision of Recommendation ITU-R P.834-9 - Effects of tropospheric refraction on radiowave propagation � �	United States of America �	�	2022-05-13
�	[ 89 ] � �	Working document toward a preliminary draft new Question ITU-R [LUNAR_PERMITTIVITY] - Lunar complex relative permittivity prediction models � �	United States of America �	�	2022-05-13
�	[ 88 ] � �	Contributions to the propagation databanks: Path length turbulence statistics for goldstone, CA (Apollo site), Canberra, Australia, Madrid, Spain; and Kennedy Space Center, Florida � �	United States of America �	�	2022-05-13
�	[ 87 ] � �	Preliminary draft revision of Recommendation ITU-R P.638-9 - Ground-wave propagation prediction method for frequencies between 10 kHz and 30 MHz � �	United States of America �	�	2022-05-13
�	[ 86 ] � �	Machine learning role in ITU-R SG 3 � �	European Space Agency �	�	2022-05-16
�	[ 85 ] � �	Draft revision to ITU-R P. 2040-2 Plane wave reflection and transmission for a multi-layer slab � �	United States of America �	�	2022-05-16
�	[ 84 ] � �	Preliminary draft revision of ITU-R P. 310-10 - Definitions of terms relating to propagation in non-ionized media � �	United States of America �	�	2022-05-16
�	[ 83 ] � �	Draft revision to ITU-R P. 2040-2 - complex relative permittivity of building materials � �	United States of America �	�	2022-05-16
�	[ 82 ] � �	Adding symbol to the ninth ITU Radio Regulations band and revising Recommendation ITU-R V.431-8 - Nomenclature: Number 12, THF 300 to 3 000 GHz, Decimillimetric waves � �	ATDI �	Q228/3 �	2022-04-06
�	[ 81 ] � �	Working document towards a preliminary draft revision to Recommendation ITU-R P.839-4 - Rain height model for prediction methods � �	France �	�	2022-03-21
�	[ 80 ] � �	Working document towards a preliminary draft revision to Recommendation ITU-R P.678-3 - Characterization of the variability of propagation phenomena and estimation of the risk associated with propagation margin � �	France �	�	2022-03-21
�	[ 79 ] � �	Preliminary draft revision to Recommendation ITU-R P.1057-6 - Probability distributions relevant to radiowave propagation modelling � �	France �	�	2022-03-21
�	[ 78 ] � �	Proposed editorial amendment of Recommendation ITU-R P.676-12 - Attenuation by atmospheric gases and related effects - Annex 2: Approximate estimation of gaseous attenuation in the frequency range 1-350 GHz � �	Canada �	�	2021-06-14
�	[ 77 ] � �	Supplement on attenuation and reflection characteristics of clothing materials - Technology trends of active services in the frequency range 275-3 000 GH � �	National Institute of Information and Communications Technology (NICT) �	�	2021-06-14
�	[ 76 ] � �	Variability of rain specific attenuation evaluated from experimental drop size distributions � �	Spain �	�	2021-06-14
�	[ 75 ] � �	Draft reply liaison statement to Working Party 5D - WRC-23 agenda item 1.4 � �	Japan �	AI1.4 �	2021-06-14
�	[ 74 ] � �	Discussion document - Site specific model of building entry loss - Prediction of building entry loss � �	Japan �	�	2021-06-14
�	[ 73 ] � �	Supports document for Annex 18 to Document 3M/180 - Proposed draft revision of Recommendation ITU-R P.2108-0 - Prediction of clutter loss � �	N/A �	�	2021-06-14
�	[ 72 ] � �	[WORKING DOCUMENT TOWARDS A] preliminary draft revision of Recommendation ITU-R P.1409-1 - Propagation data and prediction methods for systems using high altitude platform stations and other elevated stations in the stratosphere at frequencies greater than about 1 GHz � �	Japan �	�	2021-06-14
�	[ 71 ] � �	[DRAFT] reply liaison to Working Party 7C - Earth surface bistatic scattering coefficient prediction � �	Institute of Electrical and Electronics Engineers, Inc. �	�	2021-06-14
�	[ 70 ] � �	Proposals on [WORKING DOCUMENT TOWARDS A] preliminary draft revision of Recommendation ITU-R P/1409-1 - Propagation data and prediction methods for systems using high altitude platform stations and other elevated stations in the stratosphere at frequencies greater than about 1 GHz � �	Russian Federation �	�	2021-06-10
�	[ 68 ] � �	Submission of ERA5 derived global database of 10 metre wind speed � �	Italy �	�	2021-06-10
�	[ 67 ] � �	Working document towards a preliminary draft revision to Recommendation ITU-R P.840-8 � �	France �	�	2021-06-09
�	[ 66 ] � �	Submission of rain statistics for DBSG-3 � �	United Kingdom of Great Britain and Northern Ireland �	�	2021-06-09
�	[ 65 ] � �	Draft revision to Recommendation ITU-R P.1407-7 - Multipath propagation and parameterisation of its characteristics Estimation of Rice factor for fading models � �	United Kingdom of Great Britain and Northern Ireland �	�	2021-06-09
�	[ 64 ] � �	Discussion document - Calibration of terrain loss measurement between NGSO satellite and Earth station � �	China (People's Republic of) �	�	2021-06-09
�	[ 63 ] � �	Proposed modification to Recommendation ITU-R P.676-12 - Attenuation by atmospheric gases � �	China (People's Republic of) �	�	2021-06-09
�	[ 62 ] � �	Propsal to amend the Recommendation UIT-R P.2040-1 � �	Spain �	�	2021-06-11
�	[ 61 ] � �	Analysis of rain attenuation models and proposed modifications to Recommendation ITU-R P.618-13 � �	China (People's Republic of) �	�	2021-06-09
�	[ 60 ] � �	Proposed modification to Recommendation ITU-R P.1622: Prediction methods required for the design of Earth space systems operating between 20 THz and 375 THz � �	China (People's Republic of) �	�	2021-06-09
�	[ 59 ] � �	Proposed modification to Recommendation ITU-R P.453-14 - Global digital maps of surface and elevated ducts � �	China (People's Republic of) �	�	2021-06-09
�	[ 58 ] � �	Proposed draft modification to Recommendation IT-R P.834-9 - Excess radio path length and its variations � �	China (People's Republic of) �	�	2021-06-09
�	[ 57 ] � �	Proposed modification to Recommendation ITU-R P.834-9 - The refraction correction of elevation angle for the mean annual global reference atmosphere � �	China (People's Republic of) �	�	2021-06-09
�	[ 56 ] � �	Proposed modification to Recommendation ITU-R P.841-6 and P.581-2 - Conversion of annual statistics to worst-month statistics for two statistical methods � �	China (People's Republic of) �	�	2021-06-09
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