• Title, Summary, Keyword: Flight Route

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A Study on Real-Time Position Analysis and Wireless Transmission Technology for Effective Acquisition of Video Recording Information in UAV Video Surveillance (유효영상 획득을 위한 무인기 영상감시의 실시간 위치분석과 무선전송 기술에 관한 연구)

  • Kim, Hwan-Chul;Lee, Chang-Seok;Choi, Jeong-Hun
    • Journal of Korea Multimedia Society
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    • v.18 no.9
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    • pp.1047-1057
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    • 2015
  • In this paper, we propose an effective wireless transmission technology, under poor wireless transmission channel surroundings caused by speedy flying, that are able to transmit high quality video recording information and surveillance data via accessing to various wireless networking services architecture such as One-on-One, Many-on-One, One-on-Many, Over the Horizon. The Real-Time Position Analysis(RAPA) method is also suggested to provide more meaningful video information of shooting area. The suggested wireless transmission technology and RAPA can make remote control of UAV's flight route to get valuable topography information. Because of the benefit to get both of video information and GPS data of shooting area simultaneously, the result of study can be applied to various application sphere including UAV that requires high speed wireless transmission.

Development of Scheduling System for Trajectory Based Air Traffic Management (궤적 기반의 항공 교통 관리를 위한 스케줄링 시스템 개발)

  • Oh, Eun-Mi;Eun, Yeonju;Kim, Hyounkyoung;Jeon, Daekeun
    • The Journal of Advanced Navigation Technology
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    • v.22 no.5
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    • pp.367-374
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    • 2018
  • A trajectory-based scheduling system is proposed for air traffic management using next generation aviation data communication link. Based on the service concept of 4-dimensional trajectory data link (4DTRAD) using air traffic serveices (ATS) datalink Baseline 2, a procedure for trajectory-based operation of an en-route flight is established and described in detail. To mitigate air traffic controllers' workload which might be caused by various and complicated data utilization, a prototype of the scheduling system, which predicts the aircraft trajectory based on the flight intents received by air traffic service system and provides advisory information for air traffic control, was developed. The simulation environment for trajectory based operation was built to validate the scheduling functionality of the prototype.

Proposed STAR Procedure of Incheon International Airport Considering Safety and Efficiency (인천공항 도착항공기의 안전 및 효율 향상을 위한 표준접근절차 수정방안 연구)

  • Chang, Jaeho
    • The Journal of Advanced Navigation Technology
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    • v.20 no.4
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    • pp.292-297
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    • 2016
  • Since continuous descent operations (CDO) is one of several tools available to aircraft operators and air navigation service providers (ANSPs) to increase safety, flight predictability, and airspace capacity while reducing noise, controller-pilot communications, fuel burn and emissions, widespread implementation of CDO would result in significant reductions in the environmental impact and aircraft operation costs in south korea as well. After analyzing each procedure from standard terminal arrival routes used for the Incheon international airport, it can be noticed that one of the procedures has a relatively high altitude constraint at initial approach fix than others, which lead the pilots to use unnecessary drag device in certain situations. Therefore we came to a conclusion that some arrival procedures need to be revised, so unnecessary procedure required during approach can be minimized, thereby reducing fuel consumption, noise and emissions compared to current approach procedures. And it is going to increase the safety margin significantly during approach phase due to reduced workload.

A Study on Control of Drone Swarms Using Depth Camera (Depth 카메라를 사용한 군집 드론의 제어에 대한 연구)

  • Lee, Seong-Ho;Kim, Dong-Han;Han, Kyong-Ho
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.67 no.8
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    • pp.1080-1088
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    • 2018
  • General methods of controlling a drone are divided into manual control and automatic control, which means a drone moves along the route. In case of manual control, a man should be able to figure out the location and status of a drone and have a controller to control it remotely. When people control a drone, they collect information about the location and position of a drone with the eyes and have its internal information such as the battery voltage and atmospheric pressure delivered through telemetry. They make a decision about the movement of a drone based on the gathered information and control it with a radio device. The automatic control method of a drone finding its route itself is not much different from manual control by man. The information about the position of a drone is collected with the gyro and accelerator sensor, and the internal information is delivered to the CPU digitally. The location information of a drone is collected with GPS, atmospheric pressure sensors, camera sensors, and ultrasound sensors. This paper presents an investigation into drone control by a remote computer. Instead of using the automatic control function of a drone, this approach involves a computer observing a drone, determining its movement based on the observation results, and controlling it with a radio device. The computer with a Depth camera collects information, makes a decision, and controls a drone in a similar way to human beings, which makes it applicable to various fields. Its usability is enhanced further since it can control common commercial drones instead of specially manufactured drones for swarm flight. It can also be used to prevent drones clashing each other, control access to a drone, and control drones with no permit.

A Study on Establishment and Operation of Airways Concerning Legal and Political Issues (항공로의 설정 및 운영상의 법적.정책적 문제에 대한 연구)

  • Kim, Maeng-Sern;Yoo, Kwang-Eui
    • Journal of Korean Society of Transportation
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    • v.23 no.6
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    • pp.55-67
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    • 2005
  • There are 24 airways in Incehon IFR, including 11 domestic routes and 13 international routes. The airways designated by ministry of Transportation and Construction are the routes for aircraft to fly being serviced by air traffic control system for flight safety. This study reviewed safety situation of existing permanent airways within Incheon IFR and temporary airways connecting North and South Korea. The study tried to identify the problems related to airway operation and to suggest solutions to the questionable area. The main findings are as follows: It is necessary to improve the existing normal airway systems and enlargement of the route. The airway A593 has to be upgraded to normal route. The temporary airways established to connect Seoul and Pyongyang also needs to be upgraded by air traffic control transfer agreement between two Koreas.

A Research of Passengers' Perception on Benefit to Repurchase Intention through Price Reliability: Focusing on Comparing National Carrier and Foreign Carrier between Incheon-Dubai Air Route (항공여객이 인식하는 편익이 가격신뢰를 매개로 재구매 의도에 미치는 영향 : 인천-두바이 구간 국적항공사와 외국항공사 비교를 중심으로)

  • Lee, Gun-Young;Kim, Soo-Jung;Jang, Ji-Seung
    • The Journal of Advanced Navigation Technology
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    • v.24 no.3
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    • pp.173-183
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    • 2020
  • This research focused on such a passenger sample that used to fly between Incheon int'l airport(ICN) and Dubai int'l airport(DXB) using either a national carrier or gulf carriers because the route between ICN and DXB is one of the international air routes with the toughest competition under the global pressure of open air transport market. Based on the results from the empirical research, this paper proposed a competitive advantage which a national carrier must have to cope with global competition under the open sky policies and implications for sustainable strategies of them. National carrier passengers perceived product benefits had a significant positive effect on price reliability in spite of lower price competitiveness. Following the empirical analysis results, it was proven a national carrier should try to improve product benefit sought by passengers to maintain sustainable competitive advantage in the market against foreign airlines.

Plans for Improvement of the Airspace Structure (공역체제 개선계획)

  • Kim, Chang-Seop
    • The Korean Journal of Air & Space Law and Policy
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    • v.12
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    • pp.144-177
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    • 2000
  • Our nation have several procedures and law for national airspace management, however those procedures and law not enough to manage airspace. Therefore, I have studied this paper for improving flight safety and for providing economics flight of civcil aircraft and military aircraft, also, for increasing efficiency of airspace through systematic airspace management, additionally, for improving nation defense ability and for preventation our nation damage when occuring airspace problem. Nowaday. in using airspace. two theory which freely use theory and use theory under jurisdiction is opposed by every nation in worldwide. Consequently. we can realize every nation endeavour to increase their jurisdiction airspace. However. our nation is not still prepared to cope with other nation when occuring airspace trouble. because airspace definition is not prescribed on our aviation law. Therefore. several problems which are improved in our airspace management are presented on this paper. The presented matters are as follows. First, The airspace definition is not prescribed on aviation law and responsibility limit of airspace management is ambugious. Second. problem on structure of approach control area and special airspace, Third. problem on airway system. Fourth. civil agency and military agency apply respectively different regulation in establishment of aircraft flight route, To grasp these problems, considered the airspace conception, airspace classfication. legal character of airspace. our nation airspace state and management together with other nation airspace state and management. also compared our nation airspace management with other nation airspace management. And. improvement methods to solve problems which was appeared by comparing and analysis are presented on this paper.

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Report of East Sea Crossing by Underwater Glider (수중 글라이더를 이용한 동해 횡단 사례 보고)

  • Park, Yo-Sup;Lee, Shin-Je;Lee, Yong-Kuk;Jung, Seom-Kyu;Jang, Nam-Do;Lee, Ha-Woong
    • The Sea
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    • v.17 no.2
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    • pp.130-137
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    • 2012
  • The underwater glider using conception of Lagrangian method, is a new observation platform to understand the properties of the ocean vertically. In 2011 March, KORDI made a first successful autonomous trip from Hupo to west coast of Uleungdo piloting Littoral Glider of Alaska Native Technology LLC. The journey considered many environmental variables and route vigilantly selected, the glider covered 177 km horizontally and took approximately 6 days (153 hours). Despite the existence of 1 kt eddy current, Sound velocity sampling was conducted from 5 meters and reaching maximum of 200 meters depth at each dive. It successfully collected sound velocity and temperature profile at every 5 seconds totaling up to 1408 profiles using SVT&P sensor. During the flight it was also a mission to check the diverse modes of the glider i.e. spiral, waypoints, heading, drift and hover could function without a defect in a given situation. These modes were thoroughly monitored and it could be considered that the glider handled it well during the flight. As a result of this test flight, it was evident that the given underwater glider could operate under 2kt current environment with users defined heading and depth, also with the payload up to 5 kg without changing internal buoyancy.

Development of the Three Dimensional Landform Display Software Using the Digital Terrain Model (수치지형정보를 애용한 지형의 3차원 표현 software 개발)

  • 이규석
    • Journal of the Korean Institute of Landscape Architecture
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    • v.17 no.3
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    • pp.1-8
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    • 1990
  • The digital terrain model (DTM) or digital elevation model (DEM) is commonly used in representing the continuous variation of relief over space. One of the most frequent applications is to display the three dimensional view of the landform concerned. In this paper, the altitude matrices-regular grid cell format of the elevation in Mt. Kyeryong National Park were used in developing the three dimensional view software for the first time in Korea. It required the removal of hidden lines or surfaces. To do this, it was necessary to identify those surfaces and line segments that are visible and those that are invisible. Then, only the visible portions of the landform were displayed. The assumption that line segments are used to approximate contour surfaces by polygons was used in developing the three dimensional orthographic view. In order to remove hidden lines, the visibility test and masking algorithms were used. The software was developed in the engineering workstation, SUN 3/280 at the Institute of Space Science and Astronomy using 'C' in UNIX operating system. The software developed in this paper can be used in various fields. Some of them are as follows : (1) Landscape design and planning for identifying viewshed area(line of sight maps) (2) For planning the route selection and the facility location (3) Flight simulation for pilot training (4) Other landscape planning or civil engineering purposes

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Effective event recorder operation method for multi-coupled trainset (중련편성 열차를 위한 효율적인 사건기록기 운영방안)

  • Choi, Kwon-Hee;Jeong, Byung-Ho;Min, Pyung-Oh;Oh, Yong-Suk;Lee, Jong-Woo
    • Proceedings of the KSR Conference
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    • pp.1428-1432
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    • 2007
  • One of the most important targets of transportation is to transport human and commodities to the destination safely. Railway has low risk, compared with land, ocean and flight route and it assures high security as well as high speed driving, since it runs on regular track. However, train accident may result in tragic accident due to small carelessness, so special event recorder is preferably used in order for clarity of responsibility in case of accident, maintenance of signal device and defect analysis. JRU(Juridical Recorder Unit) for ATC/ATS/ATP can be more advanced event recorder. Event recorder of KTX-I which is running now is installed one by one on each leading car and last car, and operation plan of event recorder in case of single trainset is suggested. But regarding train operation of multi-coupled trainset operation such as KTX-II, more detailed study is required for event recorder revitalization and record data process method. Therefore, this research aims at operation plan used in existing event recorder, and suggests effective operation and management plan of event recorder in multi-coupled trainset such as new High Speed Train.

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