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위성항법장치의 재밍대응 성능향상 검증을 위한 관성항법장치 모의 장치 설계
정준우,박성열,안병선,강행익,김갑진,박영범,Jung, Junwoo,Park, Sungyeol,Ahn, Byoung-Sun,Kang, Haeng-Ik,Kim, Kap Jin,Park, Youngbum 한국항행학회 2017 韓國航行學會論文誌 Vol.21 No.4
We propose the design of an INS simulated equipment to evaluate the enhanced jamming resistance of an INS-aided GPS receiver with INS, when a jamming signal is injected into a simulated high dynamic platform. We propose the design of a relative cheap INS simulated equipment, instead of an expensive INS simulator connected to GPS simulators. Based on the design, we implement the equipment and setup high dynamic test environment using the equipment to evaluate an INS-aided GPS receiver. In the GPS L1 C/A and L2C simulations that inject jamming signals of the narrow and wide bandwidth into the GPS receiver with and without INS-aided algorithm, we obtain increased jamming resistance performance as +5 dB compared with the GPS receiver without INS-aided algorithm in all kinds of jamming bandwidth. Based on the simulations, we verified that the INS simulated equipment can be used to evaluate the enhanced jamming resistance of INS-aided GPS receivers. 본 논문에서는 위성항법장치와 관성항법장치가 장착된 항체의 고속 이동을 모의하는 환경에서 재밍신호가 인가되었을 때, INS-aided 알고리즘이 장착된 위성항법장치의 재밍대응 성능향상을 검증하기 위한 관성항법장치 모의 장치의 설계 방안을 제시한다. 위성항법 시뮬레이터와 연동하여 관성데이터를 제공할 수 있는 고가의 관성항법장치 시뮬레이터를 대체하기 위해 상대적으로 낮은 가격으로 제작할 수 있는 관성항법장치 모의 장치 설계 방안을 제시하였다. 제안한 설계를 기반하여 제작한 모의 장치를 이용하여 INS-aided 알고리즘이 장착된 위성항법장치의 재밍대응 성능을 검증하기 위해 항체의 고속 이동 환경을 모의한 시험 환경을 구축하였다. 모의 시험을 통해 GPS L1 C/A와 L2C 항법신호에 인가되는 협대역/광대역의 재밍신호에 대응하여 INS-aided 알고리즘 미적용 시와 대비하여 기존 문헌에서 분석한 +5 dB의 재밍대응 성능 향상이 가능함을 확인하였다. 모의 시험 결과를 통해 본 논문에서 설계하여 제작한 관성항법장치 모의 장치가 재밍대응 성능향상 검증을 위한 관성데이터 주입이 가능함을 검증할 수 있었다.
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정준우 한국상사법학회 2008 商事法硏究 Vol.27 No.3
In the article 797 of the Maritime Law amended 2007, it is provided the limitation of liability for maritime claims and the reasons of exception of the limitation of marine carrier’s liability. This provision is, however, received from the article 4 of the Convention on Limitation of Liability for Maritime Claims 1976, which is provided that a person shall not be entitled to limit his liability if it is proved that the loss resulted from his personal act or omission committed with the intent to cause such loss, or recklessly and with knowledge that such loss would probably result, and received from the Hague-Visby Rules article 4 paragraphs 5 (e), which is provided that neither the carrier nor the ship shall be entitled to the benefit of limitation of liability if it is proved that the damage resulted from an act or omission of the carrier done with intent to cause damage, or recklessly and with knowledge that damage would probably result. But these articles are received from the article 13 of the Protocol to Amend the Convention for the Unification of Certain Rules Relating to International Carriage by Air Signed at Warsaw on 12 October 1929, which is provided that the limits of liability specified in article 22 shall not apply if it is proved that the damage resulted from an act or omission of the carrier, his servants or agents, done with intent to cause damage or recklessly and with knowledge that damage would probably result. There is, however, no definition regulations on the meaning of an act or omission of the carrier, done with intent to cause damage or recklessly and with knowledge that damage would probably result and the concept & scope of carrier by sea. Thus the dispute often arise from these issues. In this paper, thus, I have investigated the legal problems of provisions of the Maritime Law and the Conventions with regard to the concept and scope of the carrier by sea and the reasons of exception of limitation of liability, and suggested the measures for improvement on the legal problems of the Maritime Law. In the article 797 of the Maritime Law amended 2007, it is provided the limitation of liability for maritime claims and the reasons of exception of the limitation of marine carrier’s liability. This provision is, however, received from the article 4 of the Convention on Limitation of Liability for Maritime Claims 1976, which is provided that a person shall not be entitled to limit his liability if it is proved that the loss resulted from his personal act or omission committed with the intent to cause such loss, or recklessly and with knowledge that such loss would probably result, and received from the Hague-Visby Rules article 4 paragraphs 5 (e), which is provided that neither the carrier nor the ship shall be entitled to the benefit of limitation of liability if it is proved that the damage resulted from an act or omission of the carrier done with intent to cause damage, or recklessly and with knowledge that damage would probably result. But these articles are received from the article 13 of the Protocol to Amend the Convention for the Unification of Certain Rules Relating to International Carriage by Air Signed at Warsaw on 12 October 1929, which is provided that the limits of liability specified in article 22 shall not apply if it is proved that the damage resulted from an act or omission of the carrier, his servants or agents, done with intent to cause damage or recklessly and with knowledge that damage would probably result. There is, however, no definition regulations on the meaning of an act or omission of the carrier, done with intent to cause damage or recklessly and with knowledge that damage would probably result and the concept & scope of carrier by sea. Thus the dispute often arise from these issues. In this paper, thus, I have investigated the legal problems of provisions of the Maritime Law and the Conventions with regard to the concept and scope of the carrier by sea and the reasons of exception of limitation of liability, and suggested the measures for improvement on the legal problems of the Maritime Law.
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합성곱 오토인코더 기법을 이용한 가스터빈 연소기의 연소불안정 상태 감지 연구
정준우,김대식,백재민 한국연소학회 2023 한국연소학회지 Vol.28 No.3
This paper presents a method for detecting the system instability in gas turbine combustor. The proposed approach is designed as the convolutional autoencoder technique so that it offers strong attractivity even if it has a very little data. Additionally, given that it is a solution to enhance the learning effect in this system, it also provides convenience of use to practicing engineers. From these benefits, the detection rate of the system instability in the proposed method is improved while in operation, which is compared with that in both a root-mean-square and a zero-crossing approaches as well-known statistic methods.
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