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Efficient orbit/spectrum utilization

Results:30 total items.

Contributions �[�Source:�Japan�]���
�	Number�	Title	Source	AI/Question	Date
�	[ 410 ] � �	Comments/proposal to the preliminary draft revision to Recommendation ITU-R S.465-5 - Reference earth-station radiation pattern for use in coordination and interference assessment in the frequency range from 2 to 31 GHz � �	Japan �	�	2007-05-25
�	[ 285 ] � �	Proposal for draft revision of Recommendation ITU-R S.1713 - "Methodology to calculate the minimum separation angle at the Earth's surface between a non-geostationary satellite in a HEO "active" arc and a geostationary satellite" � �	Japan �	241/4 �	2006-03-09
�	[ 283 ] � �	Impact of a proposed pfd mask on the design and operation of HIO FSS systems � �	Japan �	�	2006-03-07
�	[ 232 ] � �	Revisions to PDNR ITU-R S.[HEO_TT&C] in Annex 3 of the June 2005 WP 4A Chairman's Report (Doc. 4A/196) - Proposed draft new Recommendation: analysis of interference from HEO system routine TT&C transmissions in FSS bands into GSO networks and guidelines to be used for designing and operating HEO system TT&C � �	Japan �	241/4, 240/4 �	2005-10-25
�	[ 231 ] � �	Proposed draft two liaison statements to Working Patries 4-9S, 6S, 7B and 8D � �	Japan �	�	2005-10-25
�	[ 230 ] � �	Review of S and SF Series ITU-R Recommendations for consistency with the chracterizations and terminology used in proposed draft new Recommendation ITU-R S.[HEO_SYS_CHAR] � �	Japan �	241/4 �	2005-10-25
�	[ 229 ] � �	Proposed draft new Recommendation ITU-R S.[HEO_SYS_CHAR] - Characterization of HEO type non-GSO FSS systems � �	Japan �	241/4 �	2005-10-25
�	[ 227 ] � �	Proposal for preliminary draft revision of Recommendation ITU-R S.1713 - Methodology to calculate the minimum separation angle at the Earth's surface between a non-geostationary satellite in HEO "Active" arc and a geostationary satellite" � �	Japan �	241/4 �	2005-10-24
�	[ 225 ] � �	Measurement data for small earth station antenna radiation patterns in the 29, 19.2, 14 and 12 GHz frequency bands � �	Japan �	42-1/4 �	2005-10-25
�	[ 218 ] � �	proposed modification of preliminary draft revision to Recommendation ITU-R S.1001 - Use of systems in the fixed-satellite service in the event of natural disasters and similar emergencies for warning and relief operations � �	Japan �	�	2005-10-25
�	[ 178 ] � �	Working document towards a PDNR - Characteristics of fixed satellite service systems using wideband spreading signals � �	Japan �	270/4 �	2005-05-23
�	[ 177 ] � �	Proposed preliminary draft new Recommendation ITU-R S.[HEO_SYS_CHAR] - Characterization of HEO type non-GSO fixed-satellite service systems � �	Japan �	241/4 �	2005-05-25
�	[ 175 ] � �	Examples of measurement data for small earth station antenna radiation patterns in the 29, 19.2, 14 and 12 GHz frequency bands � �	Japan �	42-1/4 �	2005-05-23
�	[ 174 ] � �	Proposed preliminary draft new Recommendation ITU-R S. [HEO_TT&C] - Analysis of interference from HEO system TT&C transmissions into GSO/FSS networks and guidelines to be used for designing and operating HEO system TT&C � �	Japan �	241/4, 240/4 �	2005-05-23
�	[ 173 ] � �	Consideration to Working document towards a PDNR on earth station antenna patterns based on measured antenna data � �	Japan �	42-1/4 �	2005-05-23
�	[ 172 ] � �	Working document towards a PDNR - Use of systems in the fixed-satellite service in the event of natural disasters and similar emergencies for warning and relief operations � �	Japan �	�	2005-05-20
�	[ 92 ] � �	Proposed revision of Recommendation ITU-R S.1432 - Apportionment of the allowable error performance degradations to fixed-satellite service (FSS) hypothetical reference digital paths (HRDP) arising from time invariant interference � �	Japan �	�	2004-09-28
�	[ 88 ] � �	Proposed amendments to the PDNR in Annex 7 to the WP 4A Chairman's report (Doc. 4A/78) - Methodology to calculate the minimum separation angle at the Earth's surface between the direction of a satellite in a HEO "active" arc and the direction of a satellite in the GSO, and thus to find the maximum delta T/T that the HEO satellite could cause � �	Japan �	241/4 �	2004-09-22
�	[ 87 ] � �	Additional study for the working document in Annex 21 of the WP 4A Chairman's report (4A/78) - Analysis of interference from HEO system TT&C transmissions into GSO/FSS networks � �	Japan �	241/4, 240/4 �	2004-09-22
�	[ 86 ] � �	Proposed preliminary draft new Recommendation - Definitions of highly-inclined elliptical orbits and satellite systems using these orbits to provide fixed-satellite service � �	Japan �	241/4 �	2004-09-22
�	[ 85 ] � (Rev.1)�	Proposed upgrade to DNR of the PDNR in Annex 14 to the 4A Chairman's report (4A/78) - Guidelines for protection of FSS satellite networks using the geostationary-satellite orbit (GSO) from interference caused by HEO satellite systems in highly inclined orbits in the frequency band 19.7-10.2 GHz in connection with the application of RR 22.5 CA (WRC-03) � �	Japan �	�	2004-09-22
�	[ 84 ] � �	Working document towards a PDNR - Fixed-satellite service using wideband spreading signals � �	Japan �	270/4 �	2004-09-22
�	[ 83 ] � �	Interference from ultra-wideband devices into networks of fixed-satellite services � �	Japan �	227/1 �	2004-09-22
�	[ 54 ] � �	Working document towards preliminary draft new Recommendation - Methodology to calculate minimum separation angles at the Earth's surface between the direction of a satellite in the HEO "active" arc and the direction of a satellite in the GSO and thus to find the maximum AT/T that the HEO satellite could cause � �	Japan �	241/4 �	2004-04-07
�	[ 52 ] � �	Draft revision to Question ITU-R 270/4 (fixed -satellite service systems using very wideband spreading signals) � �	Japan �	270/4 �	2004-04-07
�	[ 49 ] � �	Proposed revision to preliminary draft new Recommendation - Protection of satellite networks using the geostationary satellite orbits (GSO) from interference caused by HEO satellites systems in highly inclined orbits in the frequency band 19.7-20.2 GHz � �	Japan �	�	2004-04-07
�	[ 48 ] � �	Working document towards a preliminary draft new Recommendation on definition of HEO � �	Japan �	241-1/4, 240-1/4 �	2004-04-07
�	[ 47 ] � �	Analysis of interference from HEO system TT&C transmissions into GSO/FSS networks � �	Japan �	241/4, 240/4 �	2004-04-07
�	[ 46 ] � �	Interference from ultra-wideband devices into networks of fixed satellite services (FSS) � �	Japan �	261/4 �	2004-04-07
�	[ 45 ] � �	Preliminary analysis on interference from the ultra-wideband (UWB) devices into the fixed satellite service (FSS) networks operating in the 7-30 GHz frequency bands � �	Japan �	261/4 �	2004-04-07
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