1、 ETSI EN 302 454 V2.1.1 (2017-10) Meteorological Aids (Met Aids); Radiosondes to be used in the 1 668,4 MHz to 1 690 MHz frequency range; Harmonised Standard covering the essential requirements of article 3.2 of Directive 2014/53/EU HARMONISED EUROPEAN STANDARD ETSI ETSI EN 302 454 V2.1.1 (2017-10)
2、2 Reference REN/ERM-TGAERO-52 Keywords harmonised standard, radio, short range, testing, UHF ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-Prfect
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9、SI EN 302 454 V2.1.1 (2017-10) 3 Contents Intellectual Property Rights 5g3Foreword . 5g3Modal verbs terminology 5g3Introduction 6g31 Scope 7g32 References 7g32.1 Normative references . 7g32.2 Informative references 7g33 Definitions, symbols and abbreviations . 8g33.1 Definitions 8g33.2 Symbols 8g33.
10、3 Abbreviations . 8g34 Technical requirements specifications . 9g34.1 Environmental profile . 9g34.2 Conformance requirements 9g34.2.1 General Requirements. 9g34.2.2 Frequency error . 9g34.2.2.1 Definition 9g34.2.2.2 Limits 9g34.2.2.3 Conformance . 9g34.2.3 Carrier Power (conducted) 9g34.2.3.1 Defin
11、ition 9g34.2.3.2 Limits 9g34.2.3.3 Conformance . 10g34.2.4 Effective Radiated Power . 10g34.2.4.1 Definition 10g34.2.4.2 Limits 10g34.2.4.3 Conformance . 10g34.2.5 Modulation bandwidth 10g34.2.5.1 Definition 10g34.2.5.2 Limits 10g34.2.5.3 Conformance . 10g34.2.6 Spurious emissions . 10g34.2.6.1 Defi
12、nition 10g34.2.6.2 Limits 11g34.2.6.3 Conformance . 11g34.2.7 Frequency stability under low voltage conditions 11g34.2.7.1 Definition 11g34.2.7.2 Limits 11g34.2.7.3 Conformance . 11g35 Conditions for measurements . 11g35.1 Presentation of the equipment for testing purposes 11g35.1.1 General Consider
13、ations . 11g35.1.2 Choice of model for testing 12g35.1.3 Testing of equipment with alternative power levels . 12g35.1.4 Testing of equipment that does not have an external 50 RF connector (integral antenna equipment) 12g35.1.4.1 Equipment with an internal permanent or temporary antenna connector 12g
14、35.1.4.2 Equipment with an internal permanent antenna 12g35.1.5 Auxiliary test equipment . 12g35.2 General conditions for testing 12g35.2.1 Test signals and modulation 12g35.2.2 Artificial antenna 12g3ETSI ETSI EN 302 454 V2.1.1 (2017-10) 4 5.2.3 Test fixture 13g35.2.4 Test sites and general arrange
15、ments for radiated measurements 13g35.2.5 Modes of operation of the transmitter . 13g35.2.6 Measuring device 13g35.3 Test conditions, power sources and ambient temperatures . 13g35.3.1 Normal and extreme test conditions 13g35.3.2 Test power source . 14g35.3.2.1 External test power source 14g35.3.2.2
16、 Internal test power source . 14g35.3.3 Normal test conditions 14g35.3.3.1 Normal temperature and humidity 14g35.3.3.2 Normal test power source 14g35.3.4 Extreme test conditions . 14g35.3.4.1 General 14g35.3.4.2 Procedure for tests at extreme conditions 15g35.3.4.3 Special Radiosondes 15g35.3.4.4 Ex
17、treme test source voltages . 15g35.3.4.4.1 Power sources using batteries 15g35.3.4.4.2 Other power sources 15g36 Testing for compliance with technical requirements 16g36.1 Environmental conditions for testing . 16g36.2 Interpretation of the measurement results 16g36.3 Radio tests 16g36.3.1 Frequency
18、 error . 16g36.3.2 Carrier Power (conducted) 17g36.3.3 Effective Radiated Power . 17g36.3.4 Modulation bandwidth 18g36.3.5 Spurious emissions . 18g36.3.5.1 General requirement 18g36.3.5.2 Method of measuring the power level in a specified load, clause 6.3.5.1 a) i) 19g36.3.5.3 Method of measuring th
19、e effective radiated power, clause 6.3.5.1 a) ii). 19g36.3.5.4 Method of measuring the effective radiated power, clause 6.3.5.1 b) . 20g36.3.6 Frequency stability under low voltage conditions 20g3Annex A (informative): Relationship between the present document and the essential requirements of Direc
20、tive 2014/53/EU . 21g3Annex B (informative): Change history . 22g3History 23g3ETSI ETSI EN 302 454 V2.1.1 (2017-10) 5 Intellectual Property Rights Essential patents IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these ess
21、ential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in ETSI SR 000 314: “Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updat
22、es are available on the ETSI Web server (https:/ipr.etsi.org/). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web serve
23、r) which are, or may be, or may become, essential to the present document. Trademarks The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners. ETSI claims no ownership of these except for any which are indicated as being the property of ETSI
24、, and conveys no right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks. Foreword This Harmonised European Standard (EN) has been
25、produced by ETSI Technical Committee Electromagnetic compatibility and Radio spectrum Matters (ERM). The present document has been prepared under the Commissions standardisation request C(2015) 5376 final i.2 to provide one voluntary means of conforming to the essential requirements of Directive 201
26、4/53/EU on the harmonisation of the laws of the Member States relating to the making available on the market of radio equipment and repealing Directive 1999/5/EC i.1. Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with the normative
27、clauses of the present document given in table A.1 confers, within the limits of the scope of the present document, a presumption of conformity with the corresponding essential requirements of that Directive and associated EFTA regulations. National transposition dates Date of adoption of this EN: 2
28、2 August 2017 Date of latest announcement of this EN (doa): 30 November 2017 Date of latest publication of new National Standard or endorsement of this EN (dop/e): 31 May 2018 Date of withdrawal of any conflicting National Standard (dow): 31 May 2018 Modal verbs terminology In the present document “
29、shall“, “shall not“, “should“, “should not“, “may“, “need not“, “will“, “will not“, “can“ and “cannot“ are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when u
30、sed in direct citation. ETSI ETSI EN 302 454 V2.1.1 (2017-10) 6 Introduction Meteorological aids, Radiosondes, are light weight, disposable precision measurement instruments mainly used for in situ upper air measurements of meteorological variables (pressure, temperature, relative humidity, wind spe
31、ed and direction) in the atmosphere up to an altitude of 36 km. The measurements are vital to international weather forecasting capability (and hence severe weather warning services for the public involving protection of life and property). The Radiosonde systems provide simultaneous measurements of
32、 the vertical profile of temperature, relative humidity as well as wind speed and direction. The variation of these meteorological variables in the vertical contains the majority of the critical information for weather forecasting. These systems are the only meteorological observing systems able to
33、regularly provide the vertical resolution that meteorologists need for all five variables (i.e. pressure, temperature, relative humidity, wind speed and direction). Typically the Radiosonde observations are produced by Radiosondes measuring atmosphere for approximately 2 hours and carried by ascendi
34、ng balloons launched from land stations or ships. Radiosonde observations are carried out routinely by almost all countries, two to four times a day. The observation data is then circulated immediately to all other countries within a few hours via the WMO (World Meteorological Organization) Global T
35、elecommunications System (GTS). The observing systems and data dissemination are all organized under the framework of the World Weather Watch Programme of WMO. The observation stations are required, worldwide, at a horizontal spacing of less than or equal to 250 km with a frequency of observation fr
36、om one to four times per day. Remotely sensed measurements from satellites do not have the vertical resolution available from Radiosondes. Successful derivation of vertical temperature structure from these satellite measurements usually requires a computation initialized either directly from Radioso
37、nde statistics or from the numerical weather forecast itself. In the latter case, the Radiosonde measurements ensure that the vertical structure in these forecasts remains accurate and stable with time. In addition, the Radiosonde measurements are used to calibrate satellite observations by a variet
38、y of techniques. Radiosonde observations are thus seen to remain absolutely necessary for meteorological operations for the foreseeable future. Other applications, independent of the main civilian meteorological organizations include environmental pollution, hydrology, radioactivity in the free atmo
39、sphere, significant weather phenomena (e.g. winter storms, thunderstorms, etc.) and investigation of a range of physical and chemical properties of the atmosphere. About 150 000 Radiosondes are annually used in Europe, about 10 % of them are in 1 680 MHz band. This use is not decreasing with time, s
40、ince with modern automation it is now much easier to successfully operate systems without highly skilled operators and a large amount of supporting equipment. The Radiosondes use unidirectional transmission on two frequency bands: 403 MHz band covers primary and co-primary allocations from 400,15 MH
41、z to 406 MHz and 1 680 MHz band from 1 668,4 MHz to 1 690 MHz. The 403 MHz Radiosonde technology applies GNSS (Global Navigation Satellite Systems) for wind measurement, whereas the 1 680 MHz systems may base the wind measurement on balloon tracking with a Radio Direction Finding antenna. Because th
42、e 403 MHz wind measurement depends on the availability of the GNSS signals, many operators do not consider this technology secure enough for critical applications (e.g. defence and national security), and consequently prefer 1 680 MHz systems. According to Recommendation ITU-R SA.1745 i.5 the Mobile
43、 Satellite Service (MSS) is allocated in the band from 1 670 MHz to 1 675 MHz, and the sub band from 1 683 MHz to 1 690 MHz is used for meteorological satellite. Thus all administrations should strive to implement MetAids systems that limit their operations to the band 1 675 - 1 683 MHz for Radioson
44、des. National regulatory conditions (channel/frequency separations or the inclusion of an automatic transmitter shut-off feature) for an individual/general license or license exemption may apply. ETSI ETSI EN 302 454 V2.1.1 (2017-10) 7 1 Scope The present document specifies technical characteristics
45、 and methods of measurements for digitally modulated radiosondes operating in the range from 1 668,4 MHz to 1 690 MHz. NOTE: The present document does not cover radiosondes with an imbedded receiver. The present document covers the essential requirements of article 3.2 of Directive 2014/53/EU i.1 un
46、der the conditions identified in annex A. 2 References 2.1 Normative references References are specific, identified by date of publication and/or edition number or version number. Only the cited version applies. Referenced documents which are not found to be publicly available in the expected locati
47、on might be found at https:/docbox.etsi.org/Reference/. NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee their long term validity. The following referenced documents are necessary for the application of the present document. 1 CISPR 16-1
48、-1 (Edition 4.0) (09-2015): “Specification for radio disturbance and immunity measuring apparatus and methods - Part 1-1: Radio disturbance and immunity measuring apparatus - Measuring apparatus“. 2 ETSI TS 103 052 (V1.1.1) (03-2011): “Electromagnetic compatibility and Radio spectrum Matters (ERM);
49、Radiated measurement methods and general arrangements for test sites up to 100 GHz“. 3 ETSI EN 300 440 (V2.1.1) (03-2017): “Short Range Devices (SRD); Radio equipment to be used in the 1 GHz to 40 GHz frequency range; Harmonised Standard covering the essential requirements of article 3.2 of Directive 2014/53/EU“. 2.2 Informative references References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version applies. For non-specific references, the latest ve
