M35 卫星通信设备 标准查询与下载



共找到 1131 条与 卫星通信设备 相关的标准,共 76

The ITU Radiocommunication Assembly considering a) that the frequency bands 11-14 GHz and 20-30 GHz are available to systems in the fixed-satellite service (FSS) employing satellites in both geostationary (GSO) and non-GSO orbits; b) that earth stations in the FSS employing satellites in GSO orbits need to be protected from unacceptable interference by satellites in non-GSO orbits transmitting in the shared frequency bands; c) that in order to provide the requisite protection from such interference, the World Radiocommunication Conference (Istanbul, 2000) (WRC-2000) adopted validation single-entry limits on the maximum permissible equivalent power flux-densities (epfd) which satellites in non-GSO orbits may radiate in some frequency bands, for certain specified earth station antenna diameters.

Continuous curves of epfd versus geostationary fixed-satellite service earth station antenna diameter and epfd versus geostationary fixed-satellite service space station antenna beamwidth to indicate the protection afforded by systems complying with the l

ICS
CCS
M35
发布
2002-01-01
实施

The ITU Radiocommunication Assembly considering a) that environmental and other effects are important factors in determining the end of life performance of a satellite antenna; b) that satellite antenna side-lobe levels can vary due to environmental factors, operational factors and ageing; c) that satellite antenna radiation pattern is an important parameter in the interference calculations; d) that the use of active array antennas in the operational satellite environment is increasing; e) that methods to assess the environmental effects on the performance of a satellite antenna depend on the technologies used for the antenna; f) that for some systems, the primary source of interference into an earth station is from the satellite antenna side lobes into the earth station.

A possible method to account for environmental and other effects on satellite antenna patterns

ICS
CCS
M35
发布
2002-01-01
实施

The ITU Radiocommunication Assembly considering: a) that in the 6/4 GHz frequency bands both dual circular polarization (CP) and dual linear polarization (LP) are used by different operational geostationary-satellite fixed satellite service (FSS) networks, and this situation is likely to continue because of the established infrastructure in those networks; b) that such bands are heavily used resulting in the need for co-frequency and co-coverage networks to operate with relatively small orbital spacing; c) that the existing ITU-R Recommendations, as well as Appendix 8 to the Radio Regulations(RR), only address the single entry interference between adjacent satellite networks, taking the interfering signal in each polarization at a time; d) that it is important during coordination to be able to determine the aggregate effect of adjacent satellite interference arising from the simultaneous use of both orthogonal polarizations in each adjacent satellite network, whether the two networks use the same type of polarization (i.e. both CP or both LP) or whether they use different types of polarization (i.e. one using CP and the other using LP); e) that the magnitude of the two orthogonally polarized signals of the interfered with and/or the interfering networks could be equal or unequal.

Aggregate interference levels between closely spaced dual circularly and dual linearly polarized geostationary-satellite networks in the fixed-satellite service operating in the 6/4 GHz frequency bands

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CCS
M35
发布
2002-01-01
实施

The data in the databank are to be regarded as representative examples of system technical characteristics, to be used only for sharing studies within Radiocommunication Study Groups and not as a basis for coordination between satellite networks. The da

Satellite system characteristics to be considered in frequency sharing analyses within the fixed-satellite service

ICS
33.060.30
CCS
M35
发布
2002-01-01
实施

The ITU Radiocommunication Assembly considering a) that systems in the fixed service (FS) are widely employed throughout the world and make extensive use of much of the radio-frequency spectrum; b) that the mobile-satellite service (MSS) is allocated in a number of bands in the ITU Radio Regulations on a primary basis co-equally shared with the FS; c) that there is potential for interference to systems in the FS from MSS systems using both geostationary and non-geostationary orbits; d) that several World Radiocommunication Conferences addressed a number of allocation issues that affected sharing between the FS and MSS.

Sharing criteria between the mobile-satellite service and the fixed service

ICS
CCS
M35
发布
2002-01-01
实施

The ITU Radiocommunication Assembly considering a) that environmental and other effects are important factors in determining the end of life performance of a satellite antenna; b) that satellite antenna side-lobe levels can vary due to environmental factors, operational factors and ageing; c) that satellite antenna radiation pattern is an important parameter in the interference calculations; d) that the use of active array antennas in the operational satellite environment is increasing; e) that methods to assess the environmental effects on the performance of a satellite antenna depend on the technologies used for the antenna; f) that for some systems, the primary source of interference into an earth station is from the satellite antenna side lobes into the earth station.

A possible method to account for environmental and other effects on satellite antenna patterns

ICS
CCS
M35
发布
2002-01-01
实施

For the interference between GSO FSS networks, recommends 1 and 2 apply but recommends 3 does not apply.

Maximum permissible levels of interference in a satellite network (GSO/FSS; non-GSO/FSS; non-GSO/MSS feeder links)* in the fixed-satellite service caused by other codirectional FSS networks below 30 GHz

ICS
33.060.30
CCS
M35
发布
2002-01-01
实施

that there may be a need to calculate the probabilities of exceeding a given interference level in interference or sharing studies between non-GSO satellite orbit stations and other stations

Analytical method to calculate short-term visibility and interference statistics for non-geostationary satellite orbit satellites as seen from a point on the Earth’s surface

ICS
CCS
M35
发布
2002-01-01
实施

The ITU Radiocommunication Assembly considering a) that Sun transits are a natural phenomena in geostationary-satellite orbit fixed-satellite service (GSO FSS) networks, which occur over a period of 3-9 days twice a year, depending on the antenna diameter; b) that GSO FSS earth station operators and customers plan for the Sun transits and implement appropriate means to minimize their impact; c) that GSO FSS earth station operators should have a methodology available to analyse the magnitude of the interference from the Sun and the timing of the interference events

Impact of interference from the Sun into a geostationary-satellite orbit fixed-satellite service link

ICS
CCS
M35
发布
2002-01-01
实施

The ITU Radiocommunication Assembly considering a) that Sun transits are a natural phenomena in geostationary-satellite orbit fixed-satellite service (GSO FSS) networks, which occur over a period of 3-9 days twice a year, depending on the antenna diameter; b) that GSO FSS earth station operators and customers plan for the Sun transits and implement appropriate means to minimize their impact; c) that GSO FSS earth station operators should have a methodology available to analyse the magnitude of the interference from the Sun and the timing of the interference events

Impact of interference from the Sun into a geostationary-satellite orbit fixed-satellite service link

ICS
CCS
M35
发布
2002-01-01
实施

The ITU Radiocommunication Assembly considering a) that the aeronautical mobile-satellite (R) service (AMS(R)S) provides communications relating to safety and regularity of flight (see Nos. 1.36 and 1.59 of the Radio Regulations (RR)); b) that there is a need to prevent harmful interference to the AMS(R)S; c) that the types of radiation which can cause harmful interference can differ widely depending on the particular technical and operational characteristics of the services involved; d) that it may not be possible in some cases to identify in detail the characteristics of the interfering radiation; e) that the radiations from potential sources of harmful interference are, or should be, subject to certain standards; f) that the practical control of harmful interference can only be effected by individual administrations; g) that Contracting States of the International Civil Aviation Organization (ICAO) are under certain obligations relative to the Standards and Recommended Practices (SARPs) for AMS(R)S; h) that RR No. 4.10 recognizes that safety services require special measures to ensure freedom from harmful interference; j) that a safety service must take considerable precautions to ensure that any radio service sharing the same radio band is constrained sufficiently to leave an adequate margin under all likely circumstances; k) that parts of the frequency bands allocated to the AMS(R)S are also allocated to the fixed service in certain countries (RR No. 5.359) on a co-primary basis and also conditionally authorized for AM(R)S (RR No. 5.357); l) that Recommendation ITU-R M.1234 was developed to recommend aggregate and single-entry interference protection criteria for the AMS(R)S.

Interference to the aeronautical mobile-satellite (R) service

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CCS
M35
发布
2002-01-01
实施

The ITU Radiocommunication Assembly considering that a database containing the characteristics of typical systems in the fixed-satellite service (FSS) is needed for use in frequency sharing studies within ITU-R.

Satellite system characteristics to be considered in frequency sharing analyses within the fixed-satellite service

ICS
CCS
M35
发布
2002-01-01
实施

The ITU Radiocommunication Assembly considering: a) that a database containing the characteristics of typical systems in the fixed-satellite service (FSS) is needed for use in frequency sharing studies within ITU-R; b) that to be most readily usable such a database should be in the same format for all systems and should be available in electronic form; c) that the World Radiocommunication Conference (Geneva, 1995) (WRC-95), in Resolutions 116 (WRC-95) and 117 (WRC-95), allocated frequencies to the FSS for use by feeder links of non-GSO MSS systems; d) that WRC-95, in Resolution 118 (WRC-95), provided for parts of the 30/20 GHz bands in the FSS to be used by the non-GSO FSS without the restrictions of Radio Regulations (RR) No. S22.2; e) that WRC-95, in Resolution 120 (WRC-95), provided for parts of the 30/20 GHz band in the FSS to be shared with feeder links of the non-GSO MSS; f) that WRC-95, in Resolution 121 (WRC-95), advocated the development of interference criteria and methodology for sharing between feeder links of the non-GSO MSS and networks of the GSO FSS; g) that the World Radiocommunication Conference (Geneva, 1997) (WRC-97) in Resolution 130 (WRC-97), advocated the development of interference criteria and methodology for sharing between non-GSO FSS and networks of the GSO FSS.

Satellite system characteristics to be considered in frequency sharing analyses within the fixed-satellite service

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CCS
M35
发布
2002-01-01
实施

The docuement specifies requirements in the telecommunications sector.

Satellite Earth Stations and Systems (SES) - Harmonized EN for Mobile Earth Stations (MES) providing Low Bit Rate Data Communications (LBRDC) using Low Earth Orbiting (LEO) satellites operating below 1 GHz covering essential requirements under article 3.2

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33.070.40
CCS
M35
发布
2002-01
实施

In this Recommendation, the expression "Administration" is used for conciseness to indicate both a telecommunication administration and a recognized operating agency

Application of the"sender pays transit" principle in transit relations SERIES D: GENERAL TARIFF PRINCIPLES Recommendations for regional application ?Recommendations applicable to the African Region Study Group 3

ICS
CCS
M35
发布
2002
实施

The document specifies requirements in the telecommunications sector.

Satellite Personal Communications Networks (S-PCN); Network Control Facilities (NCF) for Mobile Earth Stations (MESs), including handheld earth stations, for S-PCN in the 1,5/1,6 GHz bands, providing voice and/or data communications under the Mobile Satel

ICS
33.060.30
CCS
M35
发布
2001-12
实施

Satellite Earth Stations and Systems (SES); Harmonized EN for Satellite Interactive Terminals (SIT) and Satellite User Terminals (SUT) Transmitting Towards Geostationary Satellites in the 27,5 GHz to 29,5 GHz Frequency Bands Covering Essential Requirement

ICS
CCS
M35
发布
2001-09-01
实施

GEO-Mobile Radio Interface Specifications; Part 3: Network Specifications; Sub-Part 10: Security Related Network Functions; GMR-2 03.020

ICS
CCS
M35
发布
2001-03-01
实施

Satellite Earth Stations and Systems (SES); Harmonized EN for Very Small Aperature Terminal (VSAT); Transmit-Only, Transmit-and-Receive, Receive-Only Satellite Earth Stations Operating in the 4 GHz and 6 GHz Frequency Bands Covering Essential Requirements

ICS
CCS
M35
发布
2001-02-01
实施

Satellite Earth Stations and Systems (SES); Harmonized EN for Very Small Aperture Terminal (VSAT); Transmit-Only, Transmit/Receive or Receive-Only Satellite Earth Stations Operating in the 11/12/14 GHz Frequency Bands Covering Essential Requirements under

ICS
CCS
M35
发布
2001-02-01
实施



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