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Efficient orbit/spectrum utilization

Results:30 total items.
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Contributions  [ Source: Japan ]   Documents / Contributions
 
Number 
Received Source Title Questions
[ 410 ]  
 
2007-05-25 Japan   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     N/A  
[ 285 ]  
 
2006-03-09 Japan   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"     241/4  
[ 283 ]  
 
2006-03-07 Japan   Impact of a proposed pfd mask on the design and operation of HIO FSS systems     N/A  
[ 232 ]  
 
2005-10-25 Japan   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     241/4, 240/4  
[ 231 ]  
 
2005-10-25 Japan   Proposed draft two liaison statements to Working Patries 4-9S, 6S, 7B and 8D     N/A  
[ 230 ]  
 
2005-10-25 Japan   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]     241/4  
[ 229 ]  
 
2005-10-25 Japan   Proposed draft new Recommendation ITU-R S.[HEO_SYS_CHAR] - Characterization of HEO type non-GSO FSS systems     241/4  
[ 227 ]  
 
2005-10-24 Japan   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"     241/4  
[ 225 ]  
 
2005-10-25 Japan   Measurement data for small earth station antenna radiation patterns in the 29, 19.2, 14 and 12 GHz frequency bands     42-1/4  
[ 218 ]  
 
2005-10-25 Japan   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     N/A  
[ 178 ]  
 
2005-05-23 Japan   Working document towards a PDNR - Characteristics of fixed satellite service systems using wideband spreading signals     270/4  
[ 177 ]  
 
2005-05-25 Japan   Proposed preliminary draft new Recommendation ITU-R S.[HEO_SYS_CHAR] - Characterization of HEO type non-GSO fixed-satellite service systems     241/4  
[ 175 ]  
 
2005-05-23 Japan   Examples of measurement data for small earth station antenna radiation patterns in the 29, 19.2, 14 and 12 GHz frequency bands     42-1/4  
[ 174 ]  
 
2005-05-23 Japan   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     241/4, 240/4  
[ 173 ]  
 
2005-05-23 Japan   Consideration to Working document towards a PDNR on earth station antenna patterns based on measured antenna data     42-1/4  
[ 172 ]  
 
2005-05-20 Japan   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     N/A  
[ 92 ]  
 
2004-09-28 Japan   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     N/A  
[ 88 ]  
 
2004-09-22 Japan   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     241/4  
[ 87 ]  
 
2004-09-22 Japan   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     241/4, 240/4  
[ 86 ]  
 
2004-09-22 Japan   Proposed preliminary draft new Recommendation - Definitions of highly-inclined elliptical orbits and satellite systems using these orbits to provide fixed-satellite service     241/4  
[ 85 ]  
(Rev.1) 
2004-09-22 Japan   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)     N/A  
[ 84 ]  
 
2004-09-22 Japan   Working document towards a PDNR - Fixed-satellite service using wideband spreading signals     270/4  
[ 83 ]  
 
2004-09-22 Japan   Interference from ultra-wideband devices into networks of fixed-satellite services     227/1  
[ 54 ]  
 
2004-04-07 Japan   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     241/4  
[ 52 ]  
 
2004-04-07 Japan   Draft revision to Question ITU-R 270/4 (fixed -satellite service systems using very wideband spreading signals)     270/4  
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