• Title/Summary/Keyword: 신호통달범위

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A Preliminary Study on Instrument Procedures and Frequency Interference with a planned Obstacle around an Airport (공항주변 계획된 장애물에 의한 계기절차 및 전파간섭 연구)

  • Kim, DoHyun;Hong, SeungBeom
    • Journal of the Korean Society for Aviation and Aeronautics
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    • v.25 no.4
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    • pp.24-30
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    • 2017
  • Obstacle defines all fixed and mobile objects, or parts thereof, that are located on an area intended for the surface movement of aircraft or extend above a defined surface intended to protect aircraft in flight or stand outside those defined surfaces and that have been assessed as being a hazard to air navigation. Aircraft operations are based on electronic supporting systems using radio frequencies to assist pilots. These frequencies can receive outside interference that change their courses or power, such as distortion, attenuation or reinforcements by an obstacle. This is a preliminary case study that shows the relation of instrument flight procedures and the degree of interferences introduced by a planned obstacle, which is a main bridge post, within the service volume of the radio navigation aids. For the purpose of this study, the case airport's data and it's VOR/DME and ILS systems' limitations are analyzed, as well as the relation of interferences between the obstacle and navigation aides were reviewed with the internal regulations in Korea.

GBAS Flight Testing and Performance Assessment using Flight Inspection Aircraft at Gimpo International Airport (비행검사용 항공기를 이용한 김포국제공항 GBAS 비행시험 및 성능평가)

  • Jeong, Myeong-Sook;Bae, Joongwon;Jun, Hyang-Sig;Lee, Young Jae
    • Journal of the Korean Society for Aeronautical & Space Sciences
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    • v.43 no.1
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    • pp.49-61
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    • 2015
  • Ground Based Augmentation System(GBAS) is a system that offers an aircraft within 23 NM radius from the airport precision positioning service and precision approach service using the concept of Differential Global Positioning System(DGPS). After GBAS ground equipment installing at the airport, functionalities and performances of GBAS should be verified through the GBAS ground and flight testing. This paper describes the methods and results for GBAS flight test using the flight inspection aircraft at Gimpo International Airport. From the test results, we confirmed that the VDB data was received without misleading within the VDB coverage of Gimpo International Airport, and VDB field strength, protection level, and course alignment accuracy met the evaluation's criteria.