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상수관로 탐사에 대한 지중레이더의 적용가능성에 관한 연구
이원종,임성민,최윤수,민관식,Lee, Won-Jong,Lim, Sung-Min,Choi, Yun-Soo,Min, Kwan-Sik 한국국토정보공사 공간정보연구원 2015 지적과 국토정보 Vol.45 No.2
In modern society, as to the underground urban infrastructure facilities(communication electricity water and sewage gas etc.) were contained many risks because of excavating. The exact position of underground facilities and the attribute information should be built in order to prevent accidents. As the result of analyzing the public surveying results from 2004 to 2009, it shows that low detecting rate of water pipeline which is only 52.4%, because the exploration of electromagnetic induction only detect metal pipeline and positioning survey only detect new pipeline before burying. Therefore development and verification of the correct and efficient exploration techniques are needed to improve the detecting rate. In this study, determined based on the location measurement results for the non-metal pipes and metal pipes before burial. It was compared with values that obtained through the ground penetrating radar and electromagnetic induction detecting. As a result, detecting rate of the concrete section showed a 100%, unpaved section showed a 94.7%, asphalt section showed 60%. So it confirmed the applicability of the ground penetrating radar at underground facilities detecting.
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5.25GHz 대역의 무선 LAN을 위한 4개의 L-슬롯모양의 마이크로스트립 안테나 설계 및 제작
이원종,윤중한,강석엽,이화춘,박효달 한국통신학회 2004 한국통신학회논문지 Vol.29 No.3A
In this paper, L-shaped slot antenna for 5.15㎓-5.35㎓ is designed, fabricated. and measured. The prototype consist of four L-shaped slot. To obtain suitable bandwidth, the form layer is inserted between ground plane and substrate. Important parameters in the design are four L-slot length. width, position, air-gap height. and feed Point position. From these parameters optimized, a four L-shaped slot antenna is fabricated and measured. The measured results of the antenna are obtained as follows results. The resonant frequency of the fabrication four L-shaped slot antenna is 5.25㎓, bandwidth for approximately 5%(VSWR<1.5) and the gain is 8-9㏈i. The experimental far-field patterns are stable across the pass band. The 3dB bandwidth in H-Plane and I-Plane are 69$^{\circ}$and 62$^{\circ}$, respectively.
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