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High Frequency Data Link, or HFDL, is part of ARINC’s GLOBALink end-to-end communication system The HFDL system is a segment of the Aircraft Communications Addressing and Reporting System (ACARS) used to exchange Airline Operational Control (AOC) and Air Traffic Control (ATS) messagesbetween aircraft end systems and corresponding ground-based stations. GLOBALink/HF provides HF-based, air-to-ground digital communications with aircraft using ARINC 635 protocol. The HFDL system uses the principles of geographic diversity and frequency diversity to optimize HF propagation. | Trường Đại học Bách Khoa Hà Nội Hanoi University of Science and Technology Hệ thông Thông tin Hàng Không TS. Đỗ Trọng Tuấn Bộ môn Kỹ thuật thông tin HUST 2012 Trường Đại học Bách Khoa Hà Nội Hanoi University of Science and Technology Chương 3 Hệ thống Thông tin Hàng Không Phân mạng HF HUST 2012 BÁCH KHOA Teminologies AM R S Aeronautical Mobile Route Service AM OR S Aeronautical Mobile Off-Route Service DSB-AM Double Side Band - Amplitude Modulation WRC World Radio Conference SARP Standard And Recommended Practices
