• 제어로봇시스템학회논문지
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• 제10권11호
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• pp.1037-1043
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• 2004

In this paper, a new fault detection and isolation algorithm fur inertial sensor system is proposed. To identify the inertial sensor fault, single antenna GPS receiver is used as an effective redundancy source. To use GPS receiver as redundancy for the inertial sensors, the algorithm to estimate the attitude and acceleration using single antenna GPS receiver is adopted. By using Doppler shift of carrier phase signal and kinetic characteristics of aircraft, attitude information of aircraft can be obtained at the coordinated flight condition. Based on this idea, fault diagnosis algorithm for inertial sensors using single antenna GPS based attitude is proposed. For more effective FDI, decision variables considering the aircraft maneuver are proposed. The effectiveness of the proposed algorithm is verified through the numerical simulations.

• Strategy21
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• 통권42호
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• pp.196-223
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• 2017

The aim of this paper is to analyze China's naval strengthening and threat reflected in submarines, aircraft, destroyers and missile capabilities and US Navy's counter-forces. China is strengthening its naval forces in accordance with its three-step naval force build-up plan, and the introduction of Russian destroyers and submarines is a foothold for China's naval enforcement. The Chinese Navy also converted the concept of the First-Second Island Chain Defense, which it had already maintained, to the concept of maritime layer defense. Currently, the Chinese Navy maintains the concept of a Three-Maritime Layer Defense which includes the South China Sea, where artificial islands are being built by China, in the First Layer Defense and the East China Sea in the Third Layer Defense. Along with the advancement of Chinese Navy's submarines, surface vessels and aircraft's operational capabilities, ballistic and cruise missile capabilities become a major threat to the US Navy. If a crisis occurs in the East China Sea or in the Taiwan Waters, the US Navy will face more difficulties in employing the Carrier Strike Group to manage the crisis. Meanwhile, if a crisis occurs on the Korean Peninsula, it will be a burden to dispatch Carrier Strike GroupS to the East and West Seas of the Korean Peninsula. For the stable future, the US Navy should develop a strategy to respond more effectively to the Chinese Navy, which is challenging new maritime supremacy in East Asia.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2006년도 International Symposium on GPS/GNSS Vol.1
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• pp.377-382
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• 2006

Precision approach and landing of aircraft in a remote landing zone autonomously present several challenges. Firstly, the exact location, orientation and elevation of the landing zone are not always known; secondly, the accuracy of the navigation solution is not always sufficient for this type of precision maneuver if there is no DGPS availability within close proximity. This paper explores an alternative approach for estimating the navigation parameters of the aircraft to the landing area using only time-differenced GPS carrier phase measurement and range measurements from a vision system. Distinct ground landmarks are marked before the landing zone. The positions of these landmarks are extracted from the vision system then the ranges relative to these locations are used as measurements for the extended Kalman filter (EKF) in addition to the precise time-differenced GPS carrier phase measurements. The performance of this navigation algorithm is demonstrated using simulation.

• 항공우주정책ㆍ법학회지
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• 제22권2호
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• pp.53-83
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• 2007

The purpose of this paper is to study precedent cases of the Air carrier liability for passengers. The article 17 of Warsaw Convention (also in Montreal Convention article 17-1) provides the Air carrier liability for passengers which is the most essential part of the Air carrier liability. According to these Conventions, 1) the carrier is liable for damage sustained in case of death or bodily injury of a passenger. Precedents and theories have disagreements on whether the damage covers the mental injury as well. 2) The carrier is liable for damage sustained from aviation accident. The definition of 'aviation accident' is becoming problematic. 3) The carrier is liable for damage sustained in case of death or bodily injury of a passenger upon condition only that the accident which caused the death or injury took place on board the aircraft or in the course of any of the operations of embarking or disembarking. The question at issue is the range of the operations of embarking or disembarking. This paper introduces the precedents (also, the model precedents) about the carriers liability for passengers and related cases, so as to help understand the trend of judicial decisions. Furthermore, the cases, once took all of the attention of the international air carriers, concerned with the 'Economy class syndrome' (DVT : Deep Vein Thrombosis) are also presented. Under the new Montreal Convention, the carriers liability for passengers will continue to be the main issue. Thus it is required that academics as well as practical businesses may keep up their studies about this issue.

• 한국항공운항학회지
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• 제12권3호
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• pp.41-63
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• 2004

The area covered by product liability in broadest sense is so vast that an attempt to analyse all its impact on the aviation world risk. Every effort has been made to confine our review of subject a closely as possible to its influence on aircraft manufacturers, airlines and passengers, in spite of strong connections with other spheres of commercial. Product Liability in aviation is the liability of aircraft's manufacturer, processor or non-manufacturing seller for injury to the person or property of a buyer or third party caused by a product which has been sold. Here-in a product is aircraft, third party is passengers who suffered damage by defective design, defective construction, inadequate instructions for handling in aircraft. Whenever a product turns out to be defective after it has been sold, there are under Anglo-American law three remedies available against the aircraft's manufacturer (1) liability for negligence (2) breach of warranty (3) strict liability in tort. There are Under continental law Three remedies available against the aircraft's manufacturer (1) liability for defective warranty (2) liability for non-fulfillment of obligation (3) liability in tort. It is worth pointing out here an action for breach of warranty or for defective warranty, for non-fulfillment of obligation is available only to direct purchaser on the basis of his contract with the aircraft's manufacturer, which of course weakness its range and effectiveness. An action for tort offers the advantage of being available also to third parties who have acquired the defective product at a later stage. In tort, obligations are constituted not only by contract, but also by stature and common law. In conclusion, There in no difference in principle of law. In conclusion I would like to make few suggestions regarding the product liability for aircraft's manufacturer. Firstly, current general product liability code does not specify whether government offices(e.g. FAA) inspector conducted the inspection and auditory certificate can qualify as conclusive legal evidence. These need to be clarified. Secondly, because Korea is gaining potential of becoming aircraft's manufacturer through co-manufacturing and subcontracting-manufacturing with the US and independent production, there needs legislation that can harmonize the protection of both aircraft's manufacturers and their injured parties. Since Korea is in primary stage of aviation industry, considerate policy cannot be overlooked for its protection and promotion. Thirdly, because aircraft manufacturers are risking restitution like air-carriers whose scope of restitution have widened to strict and unlimited liability, there needs importation of mandatory liability insurance and national warranty into the product liability for aircraft's manufacturers. Fourthly, there needs domestic legislation of air transportation law that clearly regulates overall legal relationship in air transportation such as carrier & aircraft manufacturer's liability, and aviation insurance.

• 한국전자통신학회논문지
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• 제11권2호
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• pp.171-178
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• 2016

지상 관제소에 근무하는 항공관제사와 비행중인 항공기는 무전기를 이용하여 음성통신을 한다. 항공기에서 송신하는 음성신호는 전국에 있는 다수의 지상사이트에 동시에 수신된다. 이때 항공관제사는 항공기와의 거리, 속도, 기상상태, 안테나와 무전기 조정상태 등에 따라 다양한 품질의 음성신호를 수신하게 된다. 항공관제사는 매 순간 최적의 음성신호를 찾아 항공기와 최적의 상황에서 음성통신을 수행한다. 그러나, 현재는 입력된 음성의 음량(Gain)을 기준으로 CD(: Carrier Dectect)값이 우수하다고 판단되는 신호를 최적채널로 선택하지만, 이는 잡음이 통화품질에 미치는 영향을 고려하지 않기에 최적채널을 선택한다고 볼 수 없다. 본 논문을 통해 수신된 음성신호에서 잡음을 제거한 후 사용자가 최적채널을 선택할 수 있도록 수치화된 정보 및 개선된 음질의 음성신호를 제공할 수 있었다. 이를 이용하여 항공기 관제 또는 훈련감청시스템 운용 시 향상된 품질의 채널을 선택하여 안전사고 예방, 훈련 능력향상 등을 기대할 수 있다.

• 항공우주정책ㆍ법학회지
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• 제19권2호
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• pp.9-53
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• 2004

한국(韓國)과 일본(日本)의 항공법(航空法)은 주로 공법적(公法的)및 행정규제적(行政規制的)인 규정(規定)들로 조성(構成)되어 있음으로 항공기사고가 발생하였을 때에 항공안전인(航空運送人)의 손해배상책임(損害暗慣責任)의 한계(限界), 배상가액(暗慣價額) 책임소멸시기(責任消滅時期), 재판관할지(裁判管轄地 )등을 규정하는 사법적(私法的)인 규정은 한 조문도 들어가 있지 않음으로 손해배상청구사건(損害暗慣請求事件)을 처리히는데 있어 재판의 기준이 없어 항공소송사건(航空訴認事件)의 해결은 지연되고 있어 당사자(當事者)간(원(原) 피고(被告)간)의 분쟁은 더욱 심화되고 있는 것이 오늘날의실정이다. 국제항공안전(國際航空運送)의 사법적(私法的)인 법률관계는 바르샤바조약(條約) 헤이그의정서(議定書), 과다하라조약(條約), 1966년(年)의 몬트리올 항공사(航空社)간의 협정(協定), 몬트리올3개 추가의정석(追加議定書)와 몬트리올 제(第)4의정석(議定書), 몬트리올조약(條約)및 개정(改正)로마조약(條約) 등에 의하여 어느 정도 해결될 수 있지만 국내항공안전(國內航空運送)의 사법적(私法的)인 법률관계에 대하여서는 한국(韓國)과 일본(日本)은 법률에 아무런 규정이 없음으로 항공운송약관(航空運送約款)또는 민상법(民商法)등에 의하여 처리되고 있다. 그러나 항공운송약관(航空運送約款)의 일부조항이 무효결정(無效決定)또는 무효판정(無效判決)이 선고되어 문제가 제기된바 있다. 이와 같은 문제점을 해결하기 위하여서는 항공기사건(航空機事故)에 의한 분쟁당사자 간의 책임한계(責任限界)를 정하여 재판(裁判)의 기준을 정하기 위한 법을 만들어 재판(裁判)의 공정성, 신속성, 간편성을 도모할 수 있는 항공운송인(航空運送人)의 책임에 관한 국내입법으로 "항공운송법(航空運送法)"의 제정(制定)이 무엇보다도 필요하다고 본다. 이와 같은 문제의 해결과 가해자(加害者)와 피해자(被害者)간의 책임한계(責任限界)를 명확하게 정하기 위하여 현행(現行) 상법(商法)또는 항공법(船空法)을 개정하여 항공운송인(航空運送人)의 민사책임에 관한 규정을 삽입하는 것이 오랜 시일이 소요되어 가능하지 않을 때에는 신속한 해결을 위하여 항공가사건(航空機事件)의 분쟁당사자간의 책임한계(責任限界)및 법률관계(法律關係)를 규정한 새로운 "항공운송법(航空運送法)"을 특별법의 형태로 입법하는 것이 바람직하다고 본다. 이와 같은 점을 고려하여 이 논문(論文)에서는 우리나라 항공운송(航空運送)의 현황과 항공운송인(航空運送人)의 민사책임(民事責任)에 관한 세계각국(世界各國)의 입법예(立法例) ((1)영국(英國), (2)미국(美國), (3)캐나다, (4)유럽연합(聯合)(EU), (5)독일(獨逸), (6)프랑스, (7)이탈리아, (8)스페인, (9)스위스, (10)오스트레일리아, (11)일본(日本), (12)중국(中國), (13)대만(臺灣), 북한(北韓))에 관한 내용(內容)을 분석(分析) 소개(紹介)한 후 우리나라 항공운송인(航空運送人)의 책임(責任)에 관한 운송약관(運送約款)의 문제점, 그 동안의 항공안전법계약법할안(航空運送法契約法試案)의 퇴진경위(推進經緯)와 항공운송인(航空運送人)에 대한 운송계약책임(運送契約責任)과 불법행위책임(不法行爲責任)등 둘 다 포함시킨 새로운 "항공운송법(航空運送法)"의 입법(立法)의 필요성(必要性)과 이유(理由)등 입법론(立法論)을 제시하였다. 앞으로 이 입법론(立法論)에 따라 항공안전법계약법시안(航空運送法契約法試案)을 작성할 때에 규정할 주(主)된 내용(內容)은, (1)이 법(法)의 입법목적(立法目的), (2)적용범위(適用範圍), (3)"항공수화물(航空手倚物)", "항공화물(船空貨物)", "항공운송(航空運送)", "항공운송인(航空運送人)", "항공사고(航空事故)", "계산단위(計算單位)(SDR)" 등의 개념정립, (4)여객항공권(旅客械空卷), 수화물표(手倚物票)또는 항공운송상(航空運送狀)의 기재사항, (5)항공운송인(航空運送人)의 책임원칙(責任原則)및 책임원칙(責任原則) (6)피의자(被害者)의 기여과실(寄與過失)에 기인되는 항공운송인(航空運送人)의 책임감면, (7)면책특약(免責特約)의 금지, (8)항공운송인(航空運送人)의 책임한도(責任限度)의 적용배제(wilful misconduct), (9)소(訴)의 명의(名義), (10)순차운송)(順次運送)의 법률관계, (11)운송인(運送人)의 사용인(이행보조자)에 대한 책임, (12)수화물(手倚物)및 화물(貨物)의 멸실 등의 통지의무, (13)항공운송인(航空運送人)에 대한 소(訴)를 제기(提起)하는 기한(期限), (14)계약운송인이외(契約運送人以外)의 실제운송인(實際運送人)에 의하여 행하여진 항공운송(航空運送)의 법률관계(實際運送人의 책임(責任)등), (15)항공기(航空機)의 추락 또는 파편의 낙하에 의한 지상(地上)제(第)3자(者)에게 입힌 인적(人的)또는 물적손해(物的揚害)에 대한 배상책임 불범행위책임(不法行寫責任)등), 항공운송상(航空運送狀)또는 화물손해(貨物損害)에 관한 추정적효력(prima facie evidence)의 인정, 항공화물(航空貨物)의 처분청구권의 인정, 제(第)3자(者)에 대한 청구권(구상권(求償權)), 전도금(前渡金)의 지급, 부합운송(複合運送), 중재제도(仲裁制度)의 도입, 항공보험(航空保險), 재판관할지(裁判管轄地), 항공운송인(航空運送人)에 대한 제소(提訴)의 소멸시기(消滅時期)(제척(除斥)) 등이 있다.

• 한국전자통신학회논문지
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• 제2권3호
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• pp.143-149
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• 2007

본 발표문에서는 게기착륙시스템이 항공기에 제공하는 유도신호의 기본원리인 공간변조에 대해서 논의함으로써 계기착륙시스템을 심도있게 이해하는데 도움이 되고자 하였다. 우선적으로 공간변조의 기본개념을 설명하였으며, 이와 함께 공간 변조된 신호가 항공기 수신기에 영향을 주어 방위각 및 활공각이 표시되기까지 전반적인 과정을 DDM(difference in depth of modulation) 및 항공기 수신기의 동작원리와 관련시켜 설명하였다.

• 한국군사과학기술학회지
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• 제25권4호
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• pp.401-411
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• 2022

As the role of high-value air assets(e.g., AWACS, JSTARS, Rivet Joint, E-2) becomes more critical in modern warfare, the air escort for these assets blocking attacks from any potential enemy fighter also becomes vital. Without the escort, the operations of the assets become restricted. However, such an escort is not always possible due to the limited flight time of the escort fighters. In this paper, we introduce an escort tactics for high-value air assets performed by the manned-unmanned teaming composed of a transport aircraft and UAVs(unmanned aerial vehicles). In this tactics, the transport aircraft plays the role of an aircraft carrier, which carries, launches, and retrieves the UAVs. The missions of UAVs in this tactics are to detect and engage enemy fighters. We also introduce the simulation result of this tactics to identify the UAVs' required capabilities and optimal maneuvering.

• 한국항공운항학회지
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• 제25권4호
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• pp.91-100
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• 2017

Movements using aircraft are continuously increasing. This is because options for airlines, including eight national airlines, are becoming more diverse. In particular, FSC and LCC provide different services and prices, so it is not easy to choose, but it is analyzed that safety is the most important factor when selecting airlines in 2013 and 2017(all age groups are the same). There was a difference between 2013 and 2017 for each age group. In particular, the importance of price factors is high in 2017 compared to 2013, and other items in the 40s and 50s are also significantly changed.