Name: Doc 9816. Издание 1. Manual on VHF Digital Link (VDL) Mode 4
Brand: International Civil Aviation Organization
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Doc 9816. Издание 1

Документ обновлён на дату:01.01.2004

Manual on VHF Digital Link (VDL) Mode 4

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AMENDMENTSThe issue of amendments is announced regularly in the ICAO Journal and in themonthly Supplement to the Catalogue of ICAO Publications and Audio-visualTraining Aids, which holders of this publication should consult. The space belowis provided to keep a record of such amendments.RECORD OF AMENDMENTS AND CORRIGENDAAMENDMENTSCORRIGENDANo.DateEntered byNo.DateEntered byii

iii FOREWORD This document contains a comprehensive description of the Very High Frequency VHF Digital Link VDL Mode 4 data link, notably the capabilities, technical characteristics, and modes of operation of VDL Mode 4. It complements the Standards and Recommended Practices SARPs for VDL Mode 4 as contained in Annex 10 to the Convention on International Civil Aviation Aeronautical Telecommunications, Volume III, Part I Digital Data Communication Systems. Part I of this document Implementation Aspects of the Manual on VHF Digital Link VDL Mode 4, comprises of five chapters which describe the implementation of VDL Mode 4. They are as follows Chapter 1, Part I of this document provides an overview of the role of VDL Mode 4 services in support of the operations in Communications, Navigation and Surveillance CNS and in Air Traffic Management ATM, and it also describes the key functions and applications supported by the system. Chapter 2, Part I provides a technical description of VDL Mode 4 and its operating principles. Chapter 3, Part I addresses the architecture and implementation options for airborne, ground, airport and surface vehicle installations. Chapter 4, Part I describes the methods for channel management and channel switching in VDL Mode 4, with focus on Automatic Dependent Surveillance Broadcast ADS-B operation. Chapter 5, Part I describes potential future applications of VDL Mode 4. Meanwhile, Part II of this document Detailed Technical Specifications of the Manual on VHF Digital Link VDL Mode 4, is made up of four chapters outlining the detailed technical specifications of VDL Mode 4. They are as follows Chapter 1, Part II of this document describes the link layer protocols and services, including the Media Access Control sub-layer, VLD Mode 4 specific services sub-layer, data link service sub-layer, and link management entity sub-layer. Chapter 2, Part II describes the VDL Mode 4 subnetwork dependent convergence function. Chapter 3, Part II provides additional material for ADS-B applications. Chapter 4, Part II offers definitions for Compact Position Reporting, including fixed data field encoding and decoding, information field offset encoding and decoding, patch ID encoding and decoding, and position report processing. Comments on this document would be appreciated from all parties involved in the implementation of aeronautical mobile communication. These comments should be addressed to The Secretary General International Civil Aviation Organization 999 University Street Montral, Quebec H3C 5H7 Canada

iv Manual on VHF Digital Link VDL Mode 4 Note 1. References to Annex 10 are made to include all amendments up to Amendment 78. Paragraph numbering in later editions of Annex 10 may change and affect the references in this document. Note 2. Regular updates to this document may be found at the Aeronautical Communications Panel website http//www.icao.int/anb/panels/ACP/.

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