GB/T 14618-2012Frequency sharing criteria between line-of-sight radio-relay communications systems and space radio communications systems (English PDF)

Foreword

This standard rule according to GB/T 1.1-2009 given draft. This standard replaces GB/T 14618-1993 "line of sight microwave relay systems and space radiocommunication systems sharing frequency technology Requirements ", this standard compared with GB/T 14618-1993, in addition to editorial changes outside the main technical changes are as follows:

--- Edit "Subject Matter and Scope 1" to "1" and (see Chapter 1, Chapter 1 of the 1993 edition);

--- Edit "2 reference standard" is "

2 Normative references", and modify the text description and increasing referenced in this standard specification References file name (see Chapter 2, 1993 edition of the Chapter 2);

--- Edit "3 definition of" is "

3 Terms and definitions" and add or delete the content in accordance with the latest revision of this standard (see Chapter 3, 1993 edition Chapter 3);

--- Reference ITU-RSF.765-1 (2002) The latest proposed changes to Appendix A "atmospheric refraction" content and images (see Appendix A, The 1993 version of Appendix A);

--- Reference ITU-RSF.358-5 (1995) latest recommendations modifications

4.3.1 power flux-density in Table 1 (see 4.3,1993 In version 4.3.1);

--- Amend Appendix A ~ Appendix F "supplement" to "informative annex" can be read as an extension of the body of content (see Appendix A ~ Appendix F, 1993 edition of Appendix A ~ Appendix F);

--- Increase for this part of the preparation of 4 ITU-R standard reference and the two national standards as reference. The standard proposed by the Ministry of Industry and Information Technology of the People's Republic of China. The standard by the China Communications Standards Association. This standard was drafted. Datang Telecom Technology and Industry Group. The main drafters of this standard. Xu Hongmei, Jiangzu Ren, Fan Yongjun, Zhao Hongfeng, Ma Chen Yuan. This standard was first published in 1993, this is the first amendment. Line of sight microwave radio relay systems and space Communication system common technical requirements for frequency

1 Scope

GB/T 14618-2012 is the Chinese national standard on frequency sharing criteria between line-of-sight radio-relay communications systems and space radio communications systems, in the field of telecommunications and audio-video engineering. The /T suffix marks it as a recommended standard: it is not compulsory by itself, but it becomes binding as soon as a contract, a tender or a customer specification calls it up - which in practice is how most foreign buyers meet it. It was issued on 31 December 2012 by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China; Standardization Administration of China, and has been in force since 1 June 2013. Classification: ICS 33.060.30, CCS M30. This page is published from the official record of the standard held by the Chinese standards administration: the identification, the dates, the classification and the issuing body are taken from there. The clause text, the tables and the numeric limits are in the document itself, which is delivered complete in English translation.

This standard specifies the internal 1GHz ~ 40GHz range, line of sight microwave relay communication system (hereinafter referred to as microwave relay systems) and no space Radio communication systems share a frequency with the frequency of the station site selection, power limit, minimum elevation and power flux density technical requirements. This standard applies to radio-relay systems, it does not apply to communications over the horizon radio-relay systems with high sensitivity receiver and convection Horizon communications systems. This standard does not include the case of a satellite broadcasting service with terrestrial radio services share frequencies.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated edition applies to this article Member. For undated references, the latest edition (including any amendments) applies to this document.

GB 13615 earth station electromagnetic environment protection requirements

GB 13616 digital microwave radio relay station electromagnetic environment protection requirements

GB/T 13622 radio management terminology

3 Terms and Definitions

GB/T 13622 and define the following terms and definitions apply to this document.

3.1 Sight radio relay communication system line-of-sightradio-relaycommunicationssystems Using sight propagation, it belongs sight radio relay communication system.

3.2 Space radio communication system spaceradiocommunicationssystems Using one or more space stations, or with one or more reflecting satellites or other objects using space conducted by any radio communications Communication system.

3.3 Power flux density powerfluxdensity In the Earth's surface area per unit of power per unit bandwidth adopted. 4 radio-relay systems and space radiocommunication systems share 1GHz ~ 10GHz frequency 4.1

--- terrestrial microwave radio-relay system stations Select sites and frequency 4.1.1

4.1.1.1 within the same rights to space radiocommunication systems sharing frequency band of terrestrial microwave stations, the choice of its site and the frequency When the rate should be coordinated, built by the bear after coordination to ensure that the degree of interference between the meet GB 13615 and GB 13616.

4.1.1.2 If the maximum equivalent isotropic radiated power exceeding 35dBW, select the new station site, as far as possible so that the maximum radiation of the transmitting antenna