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Technical Paper

October 5, 2021

A Study on the Shape Selection of Mechanical Fastening for the Repair of Fighter Wing

Dongsu Choi

J. KIMS Technol. 2021;24(5):467-474.

A study on optimal shape selection of a mechanical fastening for the repair of crack defect of ROK Air Force F-5 fighter wing was conducted. The crack defect occurred in...

Research Paper

October 5, 2021

Optimization Design of Non-Integer Decimation Filter for Compressing Satellite Synthetic Aperture Radar On-board Data

Tae-Woong Kang, Hyon-Ik Lee, Young-Bok Lee

J. KIMS Technol. 2021;24(5):475-481.

The on-board processor of satellite Synthetic Aperture Radar(SAR) digitizes the back-scattered echoes and transmits them to the ground. As satellite SAR image of various operating conditions including broadband and high...

Research Paper

October 5, 2021

A Study of Performance Characteristics for Active Sonar in Korean Shallow Seawater Temperature Structures

Won-Ki Kim, Ho Seuk Bae, Su-Uk Son, et al.

J. KIMS Technol. 2021;24(5):482-491.

It is obvious that understanding the effects of shallow water environment of Korea is very important to guarantee the optimal performance of active sonar such as monostatic and bistatic sonar....

Research Paper

October 5, 2021

Source Enumeration Method using Eigenvalue Gap Ratio and Performance Comparison in Rayleigh Fading

Taeyoung Kim, Yunseong Lee, Chanhong Park, et al.

J. KIMS Technol. 2021;24(5):492-502.

In electronic warfare, source enumeration and direction-of-arrival estimation are important. The source enumeration method based on eigenvalues of covariance matrix from received is one of the most used methods. However,...

Research Paper

October 5, 2021

Explosion Shock Measurement System of the Precursor Warhead for the Tandem Projectile

Donghyuk Choi, Jiyeon An, Yubeom Kim, et al.

J. KIMS Technol. 2021;24(5):503-510.

This paper presents a system that measures the acceleration of the shock caused by the explosion of the precursor warhead for the tandem projectile. The proposed system, which is implemented...

Research Paper

October 5, 2021

Analysis of Acceleration Characteristics of a Railgun

Young-Hyun Lee, Seong-Ho Kim, Byung-Ha Lee

J. KIMS Technol. 2021;24(5):511-518.

To accelerate a launch mass with a low level of pressure as possible in a railgun, it is required to hold supplied current nearly constant during launch phase. We obtained...

Research Paper

October 5, 2021

A Study on Antenna of Low-Probability of Intercept for LOS Datalink System

Jinwoo Park, Byunggil Yu, Euntae Jung, et al.

J. KIMS Technol. 2021;24(5):519-526.

In this paper, an array antenna for LOS datalink for mounting UAV(Unmanned Aerial Vehicle) of low-probability of intercept is presented. For low RCS, radome was designed by conformal form, and...

Research Paper

October 5, 2021

Development of Wideband Multi-Channel Receiver for Direction Finding of Communication Signals

Jaewon Chang, Junil Ahn, Jeungmin Joo, et al.

J. KIMS Technol. 2021;24(5):527-536.

In wireless environments, wideband receivers are used in a communication intelligent system to detect unknown signals and obtain azimuth information. To design a wideband receiver that performs multiple signal detection...

Technical Paper

October 5, 2021

A Study on Command and Control Through Cyber Protection Function Analysis

Seho Choi, Haengrok Oh, Joobeom Yun

J. KIMS Technol. 2021;24(5):537-544.

Cyber threats can bypass existing cyber-protection systems and are rapidly developing by exploiting new technologies such as artificial intelligence. In order to respond to such cyber threats, it is important...

Research Paper

October 5, 2021

FxLMS Algorithm for Active Vibration Control of Structure By Using Inertial Damper with Displacement Constraint

Min Sig Kang

J. KIMS Technol. 2021;24(5):545-557.

Engine is the main source of vibration that generates unwanted noise and vibration of vehicle chassis. Especially, in submarine applications, radiation of noise signatures can be detected at some distance...

Research Paper

October 5, 2021

Reinforcement Learning based on Deep Deterministic Policy Gradient for Roll Control of Underwater Vehicle

Su Yong Kim, Yeon Geol Hwang, Sung Woong Moon

J. KIMS Technol. 2021;24(5):558-568.

The existing underwater vehicle controller design is applied by linearizing the nonlinear dynamics model to a specific motion section. Since the linear controller has unstable control performance in a transient...

Current Issue: Volume 24(5); Oct 2021

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Copyright © 2021 by The Korea Institute of Military Science and Technology.

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