• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2010.10a
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• pp.161-163
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• 2010

말하기는 곧 행위라는 주장이 화용론의 핵심명제이다. VTS 대화는 선박들의 효율적이고 안전한 항해를 위해 이루어지는 언어적 상호작용 행위이다. 본 연구에서는 모든 VTS 화행은 항해행위의 수행에 따른 부수적인 요소가 아니라 필수불가결한 요소라는 점에 주목하고자 하였다. 먼저 화용론에서 다루는 대화의 협력원칙, 공손원칙, 명령화행 및 약속화행의 적정성, 최소대화의 원칙을 VTS 대화 상황에 적용하여 VTS 화행의 특성을 정립하고자 하였다. 그리고 실제 발생했던 해양사고에서 선박 간 담화 또는 대화를 분석함으로써 화용론적 실패가 충돌사고에 어떻게 영향을 끼치는지를 검토해보았다. VTS 상황에서 이루어지는 담화 또는 대화분석을 통해 해양사고의 원인을 심도 있게 분석하는 방안과 이의 결과를 항해사 및 관제사 교육에 활용하는 방안을 제시하였다. 덧붙여서 co-Navigation 개념이 항해안전의 새로운 패러다임이 되어야 한다는 것을 주장하였다.

• Proceedings of the KSRS Conference
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• 2008.10a
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• pp.262-265
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• 2008

We design level 1 traffic thematic map for common data structure. Level 1 means the road that can passing cars. If public office and private company use this form, they can save amount of money from overlapping update. And widely use of traffic analysis, navigation and traffic information system. For design common data structure we compared several data structure(traffic thematic map, ITS standard node/link, Car navigation map), and generalization these characteristic data. After generalization we considered about application parts. It can use of public part(traffic analysis, road management, accident management) and private part(car navigation, map product, marketing by variable analysis) etc.

• Journal of Navigation and Port Research
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• v.33 no.4
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• pp.263-270
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• 2009

Busan North port is facing crisis due to the opening of the New port. The North Port and NewPort are competing for a limited volume of cargoes and this competition is leading after all to price competition, lowering cargo work fee that may result in the failure of both This paper proposed the balanced development plans, which are the strategies of business tie-up and activation between the North Port and NewPort by introducing the strategy of "co-opetition" and the analysis for the success factor of co-opetition: to solve this operational problems on Busan port. It is found out that activation strategy is more successful co-opetition strategy than business tie-up strategy. The execution for the two co-opetition strategies will lead Busan Port to the balanced development as well as the enhanced competitiveness and will leap Busan port into global hub port as well.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.24 no.11
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• pp.1417-1423
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• 2020

This paper proposes a waypoint guidance algorithm for the Autonomous Underwater Vehicle(AUV). The proposed simplified guidance algorithm is presented, which is combined LOS guidance and cross-track guidance for path following. Cross-track error is calculated using the position of the AUV and reference path. LOS guidance and cross-track guidance are appropriately changed according to cross-track error. And the stability of the system has been improved using variable cross-track control gain by cross-track error. Also, in this paper, navigation hardware in-the loop simulation(HILS) is implemented to verify navigation algorithm of AUV that performs combined navigation using inertial navigation device and doppler velocity log(DVL). Finally, we design integrated system HILS (including navigation HILS) for performance verification of guidance algorithm of the autonomous underwater vehicle. By comparing the sea test result with HILS result, the proposed guidance algorithm and HILS configuration were confirmed be correct.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.26 no.12
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• pp.1890-1897
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• 2022

In this paper, we design a navigation filter for an underwater glider. Underwater gliders are low-cost, reusable, and can be used for a long time. Two types of filters are designed considering characteristics such as small size, low cost, and low power. The navigation filter estimates the reference velocity of the underwater glider's body frame based on the minimum sensor output. The sensor configuration of the first filter consists of an accelerometer, a magnetometer, and a depth sensor. the second filter include extra a gyroscope in the same configuration. The estimated velocity is fused with the attitude, converted into the velocity of the navigation frame and finally the position is estimated. To analyze the performance of the proposed filter, analysis was performed using Monte Carlo numerical analysis method, and the results were analyzed with standard deviation (1σ). Standard deviations of each filter's position error are 334.34m, 125.91m.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2000.10a
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• pp.111-116
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• 2000

No Abstract.See Full-text

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2001.10a
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• pp.27-37
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• 2001

No abstract, see Full-text

• Journal of Positioning, Navigation, and Timing
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• v.12 no.3
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• pp.333-333
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• 2023

• Journal of Positioning, Navigation, and Timing
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• v.11 no.2
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• pp.59-70
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• 2022

In this paper, a GPS/GF-INS integrated navigation system is proposed, in which the high rate attitude aiding signal, the high rate position and velocity aiding of GPS receiver is used for the cube structure of the GF-IMU, effectiveness of the proposed GPS/GF-INS integrated navigation system was shown when the vehicle follows two trajectories, circling and spiraling. Performance evaluation results show that the proposed GPS/GF-INS integrated navigation method gives better navigation outputs when the attitude output of GPS is used and more better navigation outputs are obtained when the rate of GPS aiding signal is higher.