MOO 标准查询与下载



共找到 11 条与 相关的标准,共 1

The ITU Radiocommunication Assembly, recognizing the adoption by the Plenipotentiary Conference of Resolution 154 (Antalya, 2006) on use of the six official languages of the Union on an equal footing, which instructed the Council and the General Secretariat on how to achieve the equal treatment of the six languages.

The organization of vocabulary work covering terms and definitions

ICS
CCS
MOO
发布
2007-01-01
实施

systems having various Earth-to-space, space-to-space, and space-to-Earth links; that systems in the Earth exploration-satellite and meteorological-satellite services may utilize transmission

Protection criteria for radiocommunication links for manned and unmanned near-Earth** research satellites***

ICS
33.060.30
CCS
MOO
发布
2006-01-01
实施

that frequency bands allocated to the Earth exploration-satellite and meteorological-satellite services may be shared by several systems, including systems operating in other service

Telecommunication Requirements for Manned and Unmanned Deep-Space Research

ICS
CCS
MOO
发布
2006-01-01
实施

A more extended list of astrophysically important and often observed line frequencies, the “Recommended Rest Frequencies for Observed Interstellar Molecular Microwave Transitions”, is maintained by a group at the National Institute of Standards and Tech

Preferred frequency bands for radio astronomical measurements Question ITU-R 145/7

ICS
33.060.80
CCS
MOO
发布
2003-01-01
实施

The electromagnetic spectrum is now so heavily used on Earth that much of its potential value for passive scientific research has already been seriously affected. Because of the general increase in radiocommunications, especially involving earth satelli

Protection of frequencies for radioastronomical measurements in the shielded zone of the Moon

ICS
CCS
MOO
发布
2003-01-01
实施

that many of the most fundamental astronomical advances made in the past five decades, (e.g. the discovery of radio galaxies, quasars, and pulsars, the direct measurement of neutral hydrogen, the direct measurement of distances of certain external gala

Protection criteria used for radio astronomical measurements (Question ITU-R 145/7)

ICS
CCS
MOO
发布
2003-01-01
实施

The ITU Radiocommunication Assembly, considering that the ITU Convention includes among the functions of Radiocommunication Study Groups the study of technical, operational and procedural matters to be considered by World and Regional Radiocommunication Conferences (CV 156).

Study of regulatory/procedural matters

ICS
CCS
MOO
发布
2003-01-01
实施

that permissible levels of interference for systems operating in the Earth exploration-satellite and meteorological-satellite services should be based on performance objectives for those services

Preferred Frequency Bands for Deep-Space Research in the 1-40 GHz Range

ICS
CCS
MOO
发布
1994-01-01
实施

that, although on-board data compression techniques could allow a reduction of symbol rates, it may be necessary to use error correcting coding techniques to achieve the performance objectives thus resulting in increased bandwidths

Sharing Considerations Relating to Deep-Space Research

ICS
CCS
MOO
发布
1994-01-01
实施

The long-term and short-term interference criteria are determined using equations (3) and (6) with values for M and n determined in the analysis of performance achievable in the absence of inter-system interference.

Preferred Frequency Bands for Deep-Space Research in the 40-120 GHz Range

ICS
CCS
MOO
发布
1994-01-01
实施

This Annex presents a method of calculating attenuation, noise temperature, and link performance, based on ITU-R Recommendations concerning the characteristics of radio wave propagation. The method can be extended to include equipment characteristics.

(WITHDRAWN) Protection Criteria and Sharing Considerations Relating to Deep-Space Research - Section 2E - Space Research

ICS
CCS
MOO
发布
1982-07-01
实施



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