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Alapadatok
Dokumentumazonosító 160872
Hivatkozási szám MSZ EN 301 842-2:2015
Cím VHF-sávú, levegő-föld közötti digitális kapcsolatú (VDL), 4-es üzemmódú rádióberendezés. A földi telepítésű berendezések műszaki jellemzői és mérési módszerei. 2. rész: Általános leírás és adatkapcsolati réteg
Angol cím VHF air-ground Digital Link (VDL) Mode 4 radio equipment. Technical characteristics and methods of measurement for ground-based equipment. Part 2: General description and data link layer
ICS 33.060.99 Egyéb rádiókommunikációs berendezések
A szabvány nyelve angol
Alkalmazási terület The present document applies to the following radio equipment types: • Very High Frequency (VHF) Digital Link (VDL) Mode 4 ground-based radio transmitters and receivers for air-ground communications operating in the VHF band, using Gaussian-filtered Frequency Shift Keying (GFSK) Modulation with 25 kHz channel spacing and capable of tuning to any of the 25 kHz channels from 112,000 MHz to 136,975 MHz as defined in ICAO VHF Digital Link (VDL) Standards and Recommended Practices (SARPs) [1]. The present document provides part 2 of the technical specifications. The present document is designed to ensure that equipment certified to it will be compatible with the relevant ICAO VDL SARPs [1] and ICAO VDL4 Technical Manual [i.1]. Manufacturers should note that in future the tuning range for the ground transceivers may also cover any 25 kHz channel from 108,000 MHz to 111,975 MHz. The scope of the present document is limited to ground stations. The equivalent specification for airborne stations is ETSI EN 302 842 [i.4]. The VDL Mode 4 system provides data communication exchanges between aircraft and ground based systems supporting surveillance and communication applications. The supported modes of communication include: • broadcast and point-to-point communication; • broadcast services including Automatic Dependent Surveillance-Broadcast (ADS-B), Traffic Information Service-Broadcast (TIS-B) and Flight Information Service-Broadcast (FIS-B) capabilities; • air-to-air, air-to-ground, ground-to-air and ground mobile services; • operation without ground infrastructure. VDL Mode 4 is designed to be an Air/Ground subsystem of the Aeronautical Telecommunication Network (ATN) [i.2] using the AM(R)S band and it is organized according to the Open Systems Interconnection (OSI) model (defined by ISO). It provides reliable sub network services to the ATN system. Other networks can also be supported but these have not been focussed on in the present document. The present document specifies functional specifications of VHF communication ground station equipment intended to be used for air-ground and air-air data communications. The present document is derived from the standards and specifications in: • VDL Mode 4 standards produced under the auspices of the International Civil Aviation Organization (ICAO) [i.1]. • Other relevant standards as defined in clause 2. It is envisaged that manufacturers may provide equipment supporting: • broadcast services only; • point-to-point services only; • both broadcast and point-to-point services. ETSI EN 301 842-1 [3] deals with tests of the physical layer. The present document defines the core link layer requirements for the DL Mode 4 ground station necessary to support all types of equipment. This includes a simple position broadcast functionality. The present document deals with tests of the link layer sufficient to support core link layer functionality, and it also includes requirements and tests sufficient to recognize and respond to transmissions associated with point-to-point communication. The present document does not address requirements for the full ADS-B message set, or for other broadcast applications that can be supported by the VDL Mode 4 equipment. These are covered by ETSI EN 301 842-3 [4]. Detailed requirements for point-to-point communication are beyond the scope of the present document, but can be found in ETSI EN 301 842-4 [5]. ETSI EN 301 842-4 [5] also includes the interface to the Aeronautical Telecommunication Network (ATN) as defined in ATN SARPs [i.2]. As the measured values of equipment performance may be a function of the method of measurement, standard test conditions and methods of test are recommended in the present document. The present document is organized as follows: • clause 2 provides references to relevant documents; • clause 3 provides general definitions and abbreviations used; • clause 4 describes the VDL Mode 4 ground station link layer; • clause 5 provides performance specifications for the VDL Mode 4 ground station and ground station coordination; • clause 6 provides general design requirements; • clause 7 provides protocol tests for core link layer functions; • annex A provides a detailed cross-reference to the relevant requirements contained in reference [i.1]; • annex B provides a description of the ISO/IEC 9646 [6] Test Methodology; • annex C provides a Bibliography. Note that the system can support a very wide range of functions. It is not practical to provide specific tests for all aspects of its functionality. The approach used is to provide detailed tests for the core link layer functionality and to provide tests of those remaining requirements which, if wrongly implemented, could cause a deterioration in the service offered by other VDL Mode 4 stations.
Az érvényesség kezdete 2015-08-01
A visszavonás napja

További adatok
Forrás idt EN 301 842-2:2015-04
Helyettesített szabvány(ok) MSZ EN 301 842-2:2012
Helyettesítő szabvány(ok)
Módosítás(ok)
(külön szabványként)
SZK-közlemények
Kapcsolódó európai jogszabály
Műszaki Bizottság MSZT/MB 850

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