• Defense and Technology
• /
• no.10 s.34
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• pp.40-46
• /
• 1981

• Defense and Technology
• /
• no.4 s.4
• /
• pp.59-68
• /
• 1979

• Defense and Technology
• /
• no.9 s.33
• /
• pp.43-49
• /
• 1981

• Defense and Technology
• /
• no.1 s.37
• /
• pp.65-67
• /
• 1982

• The Science & Technology
• /
• no.8 s.459
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• pp.47-53
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• 2007

• Defense and Technology
• /
• no.8 s.138
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• pp.49-49
• /
• 1990

• Journal of the Korea Institute of Information and Communication Engineering
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• v.17 no.5
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• pp.1083-1088
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• 2013

Detection and classification of undersea mines in shallow waters using active sonar returns is a difficult task due to complexity of underwater environment. Support vector machine(SVM) is a binary classifier that is well known to provide a global optimum solution. In this paper, classification experiments of sonar returns from mine-like objects and non-mine-like objects are carried out using the SVM, and classification performance is analyzed and presented with discussions depending on parameter values of SVM kernel functions.

• Bulletin of the Society of Naval Architects of Korea
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• v.47 no.4
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• pp.16-18
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• 2010

본고에서는 수중폭발 현상과 이로 인한 함정 충격응답 특성을 개괄하고, 수중위협 무기인 어뢰 및 기뢰에 의한 실제 함정의 대표적 손상사례를 소개하고자 한다.

• Maritime Security
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• v.7 no.1
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• pp.31-60
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• 2023

This study proposes a new convergence weapon system that combines the covert placement and detection abilities of a self-propelled mobile mine with the rapid tracking and attack abilities of supercavitating rocket torpedoes. This innovative system has been designed to counter North Korea's new underwater weapon, 'Haeil'. The concept behind this convergence weapon system is to maximize the strengths and minimize the weaknesses of each weapon type. Self-propelled mobile mines, typically placed discreetly on the seabed or in the water, are designed to explode when a vessel or submarine passes near them. They are generally used to defend or control specific areas, like traditional sea mines, and can effectively limit enemy movement and guide them in a desired direction. The advantage that self-propelled mines have over traditional sea mines is their ability to move independently, ensuring the survivability of the platform responsible for placing the sea mines. This allows the mines to be discreetly placed even deeper into enemy lines, significantly reducing the time and cost of mine placement while ensuring the safety of the deployed platforms. However, to cause substantial damage to a target, the mine needs to detonate when the target is very close - typically within a few yards. This makes the timing of the explosion crucial. On the other hand, supercavitating rocket torpedoes are capable of traveling at groundbreaking speeds, many times faster than conventional torpedoes. This rapid movement leaves little room for the target to evade, a significant advantage. However, this comes with notable drawbacks - short range, high noise levels, and guidance issues. The high noise levels and short range is a serious disadvantage that can expose the platform that launched the torpedo. This research proposes the use of a convergence weapon system that leverages the strengths of both weapons while compensating for their weaknesses. This strategy can overcome the limitations of traditional underwater kill-chains, offering swift and precise responses. By adapting the weapon acquisition criteria from the Defense force development Service Order, the effectiveness of the proposed system was independently analyzed and proven in terms of underwater defense sustainability, survivability, and cost-efficiency. Furthermore, the utility of this system was demonstrated through simulated scenarios, revealing its potential to play a critical role in future underwater kill-chain scenarios. However, realizing this system presents significant technical challenges and requires further research.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 1996.11a
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• pp.1048-1052
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• 1996

함정용 주기관은 내충격 및 고체음 저감을 위하여 이중탄성지지시스템으로 설치되고 있다. 이중탄성지 지에 의한 방법은 기뢰(mines)의 비접촉 수중폭발 공격으로부터 충격손상을 방지하며, 또한 수중으로 고체음이 전파되어 피탐되는 가능성을 저감하는데 그 목적이 있다.(중략)