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

some administrations have adopted technical limits which permit wireless access systems (including RLANs) to operate with an e.i.r.p. power limit of l W, while other administrations have adopted more stringent e.i.r.p. limits

Sharing in the band 5 250-5 350 MHz between the Earth exploration-satellite service (active) and wireless access systems (including radio local area networks) in the mobile service

ICS
CCS
M35
发布
2003-01-01
实施

The frequency band 35.5-36 GHz is allocated to the EESS (active), space research (active), radiolocation and meteorological aids services on a primary basis. Although the 35.5-36 GHz band is allocated for meteorological aids, there is no known use of the band by this service

Feasibility of sharing in the band 35.5-36 GHZ between the Earth exploration-satellite service (active) and space research service (active), and other services allocated in this band

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CCS
M35
发布
2003-01-01
实施

For the purpose of this Recommendation a satellite system using either of the following orbits is categorized as a highly-elliptical non-geostationary-satellite system.

Methodologies for the calculation of the worst-case interference levels from non-geostationary fixed-satellite service systems using highly-elliptical orbits into geostationary fixed-satellite service satellite networks operating in the 10 to 30 GHz freq

ICS
CCS
M35
发布
2003-01-01
实施

Studies have indicated that the frequency sharing between non-GSO FSS systems and GSO FSS networks is feasible if the systems operate on opposite polarizations or if satellite diversity is used when the separation angle between a non-GSO and GSO satellit

Interference mitigation techniques and frequency sharing in the bands 37.5-42.5 GHz and 47.2-50.2 GHz between geostationary-satellite fixed-satellite service networks and non-geostationary- satellite fixed-satellite service systems Question ITU-R 231/4

ICS
33.060.30
CCS
M35
发布
2003-01-01
实施

The ITU Radiocommunication Assembly considering a)that Appendix 3 of the Radio Regulations (RR) specifies the maximum permitted levels of spurious emissions, in terms of the mean power level of any spurious component supplied by a transmitter to the antenna transmission line;b)that the principal objective of RR Appendix 3 is to specify the maximum permitted levels of spurious emissions that, while being achievable, provide protection against harmful interference;c)that excessive levels of unwanted emissions may give rise to harmful interference.

Development of methodologies for the assessment of satellite unwanted emission levels before launch

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CCS
M35
发布
2003-01-01
实施

hat systems in the fixed-satellite service and line-of-sight radio-relay systems share certain frequency bands above 1 GHz

Feasibility of sharing in the band 35.5-36 GHZ between the Earth exploration-satellite service (active) and space research service (active), and other services allocated in this band Question ITU-R 233/7

ICS
33.060.30
CCS
M35
发布
2003-01-01
实施

The Recommendation considering that efficient utilization of the radio spectrum is a primary factor in the management of the geostationary-satellite orbit (GSO); that the side-lobe characteristic of earth-station antennas is one of the main factors in determining the minimum spacing between satellites and therefore the extent to which the radio spectrum can be efficiently employed.

Radiation diagrams for use as design objectives for antennas of earth stations operating with geostationary satellites

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CCS
M35
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2003-01-01
实施

that the World Administrative Radio Conference for Dealing with Frequency Allocations in Certain Parts of the Spectrum (Malaga-Torremolinos, 1992) (WARC-92) has allocated the 1 675- 1 71 O MHz band on a primary basis in Region 2 to the mobile-satellite se

Interference criteria for satellite passive remote sensing

ICS
33.200
CCS
M35
发布
2003-01-01
实施

This Annex establishes protection criteria for deep-space research. These criteria may be used in calculations of coordination distance and for other analysis. The protection criteria are also relevant to studies of sharing within the space research serv

Performance criteria for satellite passive remote sensing

ICS
33.200
CCS
M35
发布
2003-01-01
实施

The ITU Radiocommunication Assembly considering a)that the Radiocommunication Bureau (BR), in carrying out its duties under Articles 9 and 11 of the Radio Regulations (RR), is required to calculate potential interference between networks of all types in the satellite services and to compare the results of such calculations with appropriate criteria;b)that the BR has requested guidance from Study Group 8 on the methods to be employed for the calculation of the interference within the mobile-satellite service (MSS), with the mobile service and on the criteria to be used.

Interference criteria and calculation methods for the mobile-satellite service

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CCS
M35
发布
2003-01-01
实施

This Recommendation specifies the protection criteria needed to successfully control, command and operate manned and unmanned near-Earth research satellites.

Frequency bands and bandwidths used for satellite passive sensing

ICS
33.200
CCS
M35
发布
2003-01-01
实施

The ITU Radiocommunication Assembly considering: a) that emissions from the earth stations as well as from the space station of a satellite network (GSO FSS; non-GSO FSS; non-GSO mobile-satellite service (MSS) feeder links) in the FSS may result in interference to another such network when both networks operate in the same bands; b) that it is desirable to have a common methodology of simulation for assessing interference between systems that have co-frequency, codirectional feeder links when one of the systems is non-GSO; c) that it is possible to make some simplifying assumptions for these systems; d) that the simplifications in considering c) should not adversely affect the output results; e) that it would be desirable to have a common set of input parameters for each of the two communication systems; f) that it is necessary for the methodology to consider the type of fade compensation to counteract signal fading such as adaptive power control; g) that the methodology should have the ability to accurately calculate the time dependence of a single interference event in order to more accurately assess the impact on the interfered system; h) that the vast majority of the non-GSO FSS systems are in circular orbits; j) that information on the numbers and precise locations of earth stations is usually unavailable from ITU sources.

Simulation methodologies for determining statistics of short-term interference between co-frequency, codirectional non-geostationary-satellite orbit fixed-satellite service systems in circular orbits and other non-geostationary fixed-satellite service sys

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CCS
M35
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2003-01-01
实施

Potential for sharing around 4300 MHz between radio altimeters and space-based sensors of the EESS (passive)

Sharing between the Earth exploration-satellite (passive) and airborne altimeters in the aeronautical radionavigation service in the band 4 200-4 400 MHz

ICS
CCS
M35
发布
2003-01-01
实施

Potential for sharing around 4300 MHz between radio altimeters and space-based sensors of the EESS (passive)

Sharing between the Earth exploration-satellite (passive) and airborne altimeters in the aeronautical radionavigation service in the band 4 200-4 400 MHz

ICS
CCS
M35
发布
2003-01-01
实施

The ITU Radiocommunication Assembly considering that there are frequency bands allocated to the mobile-satellite service (MSS) on a shared co-primary basis with other space and terrestrial services;b)that sharing of both geostationary-satellite orbit (GSO) and non-GSO MSS systems with other services in shared spectrum allocations could be required and that the criteria and conditions for sharing between MSS and other services may be different for GSO and non-GSO MSS systems;c)that the development of sharing conditions for the MSS with respect to other services would allow for coexistence of new mobile-satellite services and existing services particularly in developing countries and may minimize the need to transfer existing assignments.

Frequency sharing between mobile-satellite services and other services

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CCS
M35
发布
2003-01-01
实施

a) that emissions from the earth stations as well as from the space station of a satellite network (GSO FSS; non-GSO FSS; non-GSO mobile-satellite service (MSS) feeder links) in the FSS may result in interference to another such network when both networ

Simulation methodologies for determining statistics of short-term interference between co-frequency codirectional non-geostationary-satellite orbit fixed-satellite service systems in circular orbits and other non-geostationary fixed-satellite service syst

ICS
CCS
M35
发布
2003-01-01
实施

The ITU Radiocommunication Assembly, considering that the World Administrative Radio Conference for Dealing with Frequency Allocations in Certain Parts of the Spectrum (Malaga-Torremolinos, 1992) (WARC-92) has allocated the 1 675-1 710 MHz band on a primary basis in Region 2 to the mobile-satellite service (MSS) (Earth-to-space) and maintained the primary status of the meteorological-satellite (MetSat service) service (space-to-Earth).

Feasibility of frequency sharing in the 1 670-1 710 MHz band between the meteorological-satellite service (space-to-Earth) and the mobile-satellite service (Earth-to-space)

ICS
CCS
M35
发布
2003-01-01
实施

The ITU Radiocommunication Assembly, considering that, by adopting equivalent power flux-density (epfd) limits in certain frequency bands in Article 22 of the Radio Regulations, the introduction of FSS systems employing non-GSO satellites has been facilitated.

Methodology to determine the worst-case interference among certain types of non-GSO FSS systems in situations where no in-line interference exists

ICS
CCS
M35
发布
2003-01-01
实施

The ITU Radiocommunication Assembly, considering that the Radio Regulations (RR) define an amateur service and an amateur-satellite service, allocate frequencies to them on an exclusive or shared basis, and provide for the cessation of emissions from amateur satellites in the event of interference.

Frequency sharing criteria in the amateur and amateur-satellite services

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CCS
M35
发布
2003-01-01
实施

that radio noise sets a limit to the performance of radio systems

Radio noise Question ITU-R 214/3

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CCS
M35
发布
2003-01-01
实施



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