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Tham khảo tài liệu 'future aeronautical communications part 11', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 238 Future Aeronautical Communications standards for applicability to the COCR. The U.S. technology assessment was conducted in close cooperation with EUROCONTROL and their contractor QinetiQ. The process was conducted in multiple phases. The first of these technology pre-screening provided an initial down-selection against detailed functional and performance evaluation criteria. The second phase included detailed investigations of a smaller set of candidates. Simulation and evaluation in the third phase led to a harmonized shortlist of common recommendations. The process is illustrated in Figure 2 Gilbert et al. 2008 . Step 2 Europe Step 1 Phase III United States Phase II Coordinated activities Technology shortlist Assess technologies Define evaluation criteria Assess technologies Define evaluation criteria Most promising i candidates Technology evaluation Technology analysis modeling test Develop harmonized technology recommendations __ Candidate technologies Phase I prescreening Technology evaluation COCR V1 COCR v2 Fig. 2. The technology assessment process used in the Future Communications Study. The international harmonization process was carried out over multiple meetings of ICAO s Aeronautical Communications Panel ACP Communications Working Groups WGC-8 through WGC-11 and Working Group Technology WGT to establish common solutions for future A G data communications in the 2020 timeframe ICAO WGC 2006 Phillips et al. 2007 . An underlying objective of the FCS technology assessment was to maximize existing technologies and standards and minimize any modifications to each. This approach leverages existing commercial industry resources invested in developing and standardizing the technology and can expedite ICAO approval as an international aviation standard. The FCS technology assessment considered technology candidates as elements of FCI in three flight domains continental i.e. enroute airspace within line of sight of terrestrial air traffic control ATC .
