ITU-R M 1732-1-2012 Characteristics of systems operating in the amateur and amateur-satellite services for use in sharing studies《操作业余和业余卫星服务共享研究系统的特点》.pdf
《ITU-R M 1732-1-2012 Characteristics of systems operating in the amateur and amateur-satellite services for use in sharing studies《操作业余和业余卫星服务共享研究系统的特点》.pdf》由会员分享,可在线阅读,更多相关《ITU-R M 1732-1-2012 Characteristics of systems operating in the amateur and amateur-satellite services for use in sharing studies《操作业余和业余卫星服务共享研究系统的特点》.pdf(10页珍藏版)》请在麦多课文档分享上搜索。
1、 Recommendation ITU-R M.1732-1(03/2012)Characteristics of systems operatingin the amateur and amateur-satelliteservices for use in sharing studiesM SeriesMobile, radiodetermination, amateurand related satellite servicesii Rec. ITU-R M.1732-1 Foreword The role of the Radiocommunication Sector is to e
2、nsure the rational, equitable, efficient and economical use of the radio-frequency spectrum by all radiocommunication services, including satellite services, and carry out studies without limit of frequency range on the basis of which Recommendations are adopted. The regulatory and policy functions
3、of the Radiocommunication Sector are performed by World and Regional Radiocommunication Conferences and Radiocommunication Assemblies supported by Study Groups. Policy on Intellectual Property Right (IPR) ITU-R policy on IPR is described in the Common Patent Policy for ITU-T/ITU-R/ISO/IEC referenced
4、 in Annex 1 of Resolution ITU-R 1. Forms to be used for the submission of patent statements and licensing declarations by patent holders are available from http:/www.itu.int/ITU-R/go/patents/en where the Guidelines for Implementation of the Common Patent Policy for ITU-T/ITU-R/ISO/IEC and the ITU-R
5、patent information database can also be found. Series of ITU-R Recommendations (Also available online at http:/www.itu.int/publ/R-REC/en) Series Title BO Satellite delivery BR Recording for production, archival and play-out; film for television BS Broadcasting service (sound) BT Broadcasting service
6、 (television) F Fixed service M Mobile, radiodetermination, amateur and related satellite services P Radiowave propagation RA Radio astronomy RS Remote sensing systems S Fixed-satellite service SA Space applications and meteorology SF Frequency sharing and coordination between fixed-satellite and fi
7、xed service systems SM Spectrum management SNG Satellite news gathering TF Time signals and frequency standards emissions V Vocabulary and related subjects Note: This ITU-R Recommendation was approved in English under the procedure detailed in Resolution ITU-R 1. Electronic Publication Geneva, 2012
8、ITU 2012 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without written permission of ITU. Rec. ITU-R M.1732-1 1 RECOMMENDATION ITU-R M.1732-1* Characteristics of systems operating in the amateur and amateur-satellite services for use in sharing studies
9、(Question ITU-R 48-6/5) (2005-2012) Scope This Recommendation documents the technical and operational characteristics of systems used in the amateur service and amateur-satellite services for the purposes of carrying out sharing studies. The systems and their characteristics described in this Recomm
10、endation are considered representative of those operating in the frequency bands available to these services ranging from 135.7 kHz through 81.5 GHz. The ITU Radiocommunication Assembly, considering a) that the Radio Regulations (RR) defines an amateur service and an amateur-satellite service and al
11、locates frequencies to them on an exclusive or shared basis; b) that systems in the amateur and amateur-satellite services operate over a wide range of frequencies; c) that the technical characteristics of systems operating in the amateur and amateur-satellite services may vary within a band; d) tha
12、t some ITU-R technical groups are considering the potential for the introduction of new types of systems or services in bands used by systems operating in the amateur and amateur-satellite services; e) that representative technical and operational characteristics of systems operating in the amateur
13、and amateur-satellite services are required to determine the feasibility of introducing new types of systems into frequency bands in which the amateur and amateur-satellite services operate, recommends 1 that the technical and operational characteristics of systems operating in the amateur and amate
14、ur-satellite services described in Annex 1 should be considered representative of those operating in the frequency bands allocated to the amateur and amateur-satellite services; 2 that Recommendation ITU-R M.1044 should be used as a guide in studies of the compatibility between systems operating in
15、the amateur and amateur-satellite services and systems operating in other services. * This Recommendation should be brought to the attention of Radiocommunication Study Group 1. 2 Rec. ITU-R M.1732-1 Annex 1 Characteristics of systems operating in the amateur and amateur-satellite services for use i
16、n sharing studies 1 Introduction A number of frequency bands are allocated to the amateur and amateur-satellite services throughout the spectrum. These bands have been selected to provide different propagation conditions. Amateur and amateur-satellite stations perform a variety of functions, such as
17、: training, intercommunication between amateur stations and technical investigations by duly authorized persons interested in radio technique solely with a personal aim and without pecuniary interest (RR Nos. 1.56 and 1.57); disaster relief communications as elaborated in Recommendation ITU-R M.1042
18、. 2 Operational characteristics Amateur stations and amateur-satellite earth stations generally do not have assigned frequencies but dynamically select frequencies within an allocated band using listen-before-talk techniques. Terrestrial repeaters, digital relay stations and amateur satellites use f
19、requencies selected on the basis of voluntary coordination within the amateur services. Some amateur frequency allocations are exclusive to the amateur and amateur-satellite services. Many of the allocations are shared with other radio services and amateur operators are aware of the sharing limitati
20、ons. Communications may be initiated on prearranged schedule or by one station initiating a general or specific call. One or more stations may respond. Formal and informal nets may be initiated as needed. Contacts may last from about 1 min to about 1 h, depending on traffic to be transmitted. Operat
21、ing protocols vary according to communication requirements and propagation. MF and HF bands are used for near-vertical-incidence-sky wave to global paths. VHF, UHF and SHF bands are used for short-range communications. Amateur satellites afford an opportunity to use frequencies above HF for long-dis
22、tance communications. 3 Technical characteristics Tables 1 to 6 contain technical characteristics of representative systems operating in the amateur and amateur-satellite services. This information is sufficient for general calculation to assess the compatibility between these systems and systems op
23、erating in other services. The upper frequency boundaries shown in Tables 1 to 6 represent the current state of deployment of most amateur radio systems. The characteristics are expected to be extended to higher frequencies (up to 250 GHz) over time. Rec. ITU-R M.1732-1 3 TABLE 1 Characteristics of
24、amateur systems for Morse on-off keying Parameter Value Mode of operation Continuous wave (CW) Morse 10-50 Bd Continuous wave (CW) Morse 20 Bd (Earth-moon-Earth) Slow Morse 1 Bd CW Frequency band (MHz)(1) 1.8-7.3 10.1-29.7 50-450 902-81 500 144 432 1 296 0.136 Necessary bandwidth and class of emissi
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