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Ionospheric Propagation and Radio Noise

Results:38 total items.

Contributions��
�	Number�	Title	Source	AI/Question	Date
�	[ 38 ] � �	Liaison statement to Working Party 7C (copy to Working Parties 3L, 3M, 4C, 5A, 5B, 5C, 5D, 7B and 7D) - WRC-27 agenda item 1.17 � �	WP 6A �	AI1.17 �	2024-11-19
�	[ 37 ] � �	Reply liaison statement to Working Party 7B (copy to Working Parties 3L, 3M, 4A, 4B, 5A, 5B, 5C, 5D, 7C and 7D) - WRC-27 agenda item 1.11 � �	WP 4C �	AI1.11 �	2024-10-22
�	[ 36 ] � �	Reply liaison statement to Working Parties 3L, 3M, 4A, 4B, 5A, 5B, 5C, 6A, 7B, 7C and 7D (copy to Working Party 5D) - WRC-27 agenda item 1.13 � �	WP 4C �	AI1.13 �	2024-10-22
�	[ 35 ] � �	Reply liaison statement to Working Party 4C (copy to the SG 7 Chair, the CPM Chair and to Working Parties 3L, 3M, 4B, 5A, 5C, 5D, 7B for information) - WRC-27 agenda item 1.14 � �	WP 7C �	AI1.14 �	2024-09-30
�	[ 34 ] � �	Reply liaison statement to Working Party 4C (copy to Working Parties 3L, 3M, 4A, 4B, 5A, 5B, 5C, 5D, 6A, 7B, 7C for information) - Technical information to support the studies for WRC-27 agenda items 1.12 and 1.13 � �	WP 7D �	AI1.13, AI1.12 �	2024-09-27
�	[ 33 ] � �	Reply liaison statement to Working Party 5B (copy to Working Parties 3L, 5C, and 6A for information and copy to ICAO for information) - Information on the standard frequency and time signal service with regards to WRC-27 agenda item 1.9 on the modernization of RR Appendix 26 � �	WP 7A �	AI1.9 �	2024-09-23
�	[ 32 ] � �	Information on the preparation of texts for the draft CPM Report to WRC-27 � �	Chair, CPM-27 �	�	2024-07-09
�	[ 31 ] � +Ann.1-15�	Report on the meeting of Working Party 3L (Denver, Colorado, USA, 29 May - 7 June 2024) � �	Chair, WP 3L �	�	2024-06-08
�	[ 30 ] � �	Final list of participants WP 3L (Denver, Colorado, USA, 29 May - 7 June 2024) � �	Director, BR �	�	2024-06-08
�	[ 29 ] � �	List of documents issued (Documents 3L/1 - 3L/29) � �	BR, Study Groups Department �	�	2024-05-31
�	[ 28 ] � �	Reply liaison statement to Working Party 4C (copy to Working Parties 3L, 3M, 4A, 4B, 5A, 5B, 5D, 6A, 7B, 7C and 7D for information) - Fixed service characteristics for use in sharing studies under WRC-27 agenda item 1.13 � �	WP 5C �	AI1.13 �	2024-05-29
�	[ 27 ] � �	Liaison statement to ITU-R Working Parties 3L, 5C, 6A and 7A (copy to ICAO for information) - Request for relevant technical information to support studies under WRC-27 agenda item 1.9 in order to review Appendix 26 of the Radio Regulations to support modernization of high-frequency spectrum use in the aeronautical mobile (OR) service � �	WP 5B �	AI1.9 �	2024-05-28
�	[ 26 ] � �	Submission of external noise data to radio noise databank - 2024 � �	United Kingdom �	�	2024-05-17
�	[ 25 ] � �	Supporting documentation for MATLAB code for processing white gaussian noise recordings � �	United Kingdom �	�	2024-05-17
�	[ 24 ] � �	Ofcom's long-term radio noise measurement campaign in the United Kingdom - 2024 update � �	United Kingdom �	�	2024-05-17
�	[ 23 ] � �	Towards a set of machine learning methods for radiowave propagation modelling � �	Canada �	�	2024-05-17
�	[ 22 ] � �	Supplement for Recommendation ITU-R P.531 on modelling ionospheric scintillation occurrence variations with geomagnetic latitude � �	China , France �	�	2024-05-16
�	[ 21 ] � �	Supporting information document on Recommendation ITU-R P.1239 - Validation of computational method influence of R12 in foF2 prediction of Recommendation ITU-R P.1239 using ionospheric observations from Chinese region � �	China �	�	2024-05-16
�	[ 20 ] � �	Discussion document on the machine learning model in the field of radio wave propagation � �	China �	�	2024-05-16
�	[ 19 ] � �	Working document towards a preliminary draft revision of Recommendation ITU-R P.533-14 - Update L_y and L_z values � �	United States �	�	2024-05-13
�	[ 18 ] � �	Working document toward a preliminary draft revision of HDB-58 - Update of Handbook 58 on ITU-R propagation prediction methods for interference and sharing studies � �	United States �	�	2024-05-13
�	[ 17 ] � �	Activity Report of Correspondence Group 3M-4 - Software products, digital maps and reference numerical data products � �	CG 3M-4 �	�	2024-05-14
�	[ 16 ] � �	Report on activities during April 2023 to April 2024 � �	CG 3L-7 �	�	2024-05-05
�	[ 15 ] � �	Preliminary draft revision of Recommendation ITU-R P.372 - Step-by-step brightness temperature method - Radio noise � �	CG 3L-7 �	�	2024-05-05
�	[ 14 ] � �	Draft new fascicle on the brightness temperature prediction method in Recommendation ITU-R P.372 � �	CG 3L-7 �	�	2024-05-05
�	[ 13 ] � �	Correspondence Group 3L-20 Activity Report � �	CG 3L-20 �	�	2024-05-03
�	[ 12 ] � �	Liaison statement to Working Parties 3L, 4B, 5A, 5C, 5D, 7B, and 7C (copy to Working Party 4A for information, and action if any) - Relevant technical information to support studies under WRC-27 agenda item 1.14 � �	WP 4C �	AI1.14 �	2024-05-01
�	[ 11 ] � �	Liaison statement to Working Parties 3L, 3M, 4A, 4B, 5A, 5B, 5C, 5D, 6A, 7B, 7C and 7D - Technical information to support the studies for WRC-27 agenda item 1.13 � �	WP 4C �	AI1.13 �	2024-05-01
�	[ 10 ] � �	Liaison statement to Working Parties 3L, 3M, 4B, 5A, 5B, 5C, 5D, 7B, 7C and 7D (copy to Working Party 4A for information, and action if any) - Relevant technical information to support studies under WRC-27 agenda item 1.12 � �	WP 4C �	AI1.12 �	2024-05-01
�	[ 9 ] � �	Liaison statement to Working Parties 3L, 3M, 4A, 4B, 5A, 5B, 5C, 5D, 7B, 7C and 7D - WRC-27 agenda item 1.11 � �	WP 4C �	AI1.11 �	2024-05-01
�	[ 8 ] � �	Liaison statement to Radiocommunication Study Groups and Working Parties (copy for information to ITU-T and ITU-D Study Groups) � �	Chair, CCV �	�	2024-04-22
�	[ 7 ] � �	Liaison statement to Working Parties 3L, 3M, 4A, 4C, 5A, 5B, 5C, 5D, 6A, 7B and 7D - Relevant technical information to support studies under WRC-27 agenda item 1.17 � �	WP 7C �	AI1.17 �	2024-03-25
�	[ 6 ] � �	Liaison statement to Working Party 5B (copy to Working Parties 3L, 5C and 7A) - Protection requirements for the HF broadcasting service relative to WRC-27 agenda item 1.9 � �	WP 6A �	AI1.9 �	2024-03-18
�	[ 5 ] � �	Liaison statement to Working Party 4C (copy to Working Parties 3L, 3M, 4A, 4B, 5A, 5B, 5C, 5D, 7B, 7C and 7D) - WRC-27 agenda item 1.13 � �	WP 6A �	AI1.13 �	2024-03-18
�	[ 4 ] � �	Liaison statement to CPM Management Team (copy to Working Parties 3L, 3M, 4A, 4B, 4C, 5A, 5B, 5C, 5D, 7B, 7C and 7D) - WRC-27 agenda item 1.11 � �	WP 6A �	AI1.11 �	2024-03-18
�	[ 3 ] � �	Liaison statement to Working Party 7C (copy to Working Parties 3L, 3M, 4A, 4C, 5A, 5B, 5C, 5D, 7B and 7D) - WRC-27 agenda item 1.17 � �	WP 6A �	AI1.17 �	2024-03-18
�	[ 2 ] � �	Text from WRC-23 Plenary for the attention of the ITU-R Working Parties that are either responsible for or contributing to studies relevant to items of the WRC-27 agenda or the WRC-31 preliminary agenda � �	Director, BR �	�	2024-01-30
�	[ 1 ] � �	Documents to be carried over from the 2019-2023 Study Period � �	WP 3L �	�	2023-12-06
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