항공용 안테나 하이브리드 모노펄스 레이다 시스템의 실용적 표적 방위각 추정 방법

김진우(Jin-Woo Kim),윤재혁(Jae-Hyuk Youn),노수현(Soo-Hyun Rho),이종은(Rho1?Jong-Eun Lee),전영범(Yeong-Beom Jeon),옥재우(Jae-Woo Ok),유응노(Eung-Noh You),윤상호(Sang-Ho Yoon),신현익(Hyun-Ik Shin) 한국전자파학회 2018 한국전자파학회논문지 Vol.29 No.9

항공용 안테나 하이브리드 모노펄스 레이다 시스템을 이용하여 지상 이동표적 탐지 시, 표적의 방위각 정확도는 시스템 내 채널 간 위상 불균형에 따른 모노펄스 기울기 추정 정확도에 지배적으로 영향을 받는다. 본 논문에서는 안테나와 180도 하이브리드의 물리적 길이 차이에 의한 위상 불균형을 효과적으로 보상할 수 있는 방법을 제안 하였다. 비행시험을 통하여 제안된 방법의 성능을 검증한 결과, 보상 전보다 유의한 성능개선 효과를 확인할 수 있었다. The accuracy of extracting the azimuth angle of a target is significantly affected by the error in the mono-pulse ratio of the air-borne antenna hybrid mono-pulse Radar system. This error is strongly induced by the phase imbalance between the channels of the system. In this paper, a method is proposed for effectively calibrating the phase imbalance caused by physical differences between the RF channels from the antenna to the 180° hybrid. Through a flight test, it was confirmed that the accuracy of the azimuth angle of the target is improved by using the proposed method.

명승 제1호 「명주 청학동 소금강」에 대한 지명 재고(再考)

노재현,김현,Rho, Jae-Hyun,Kim, Hyun 한국전통조경학회 2014 한국전통조경학회지 Vol.32 No.4

국내 명승 제1호 "명주 청학동 소금강"의 지명 유래와 변천과정 등에 대한 오류 검토의 일환으로, 관련 고지도, 지리지, 유산기 등의 고문헌 그리고 바위글씨의 분석과 해석을 통해 확인된 본 연구의 결론은 다음과 같다. 지리지 분석 결과 '소금강'이란 지명은 17세기 중반의 "여지도서"에서 처음 등장한 이래, 20세기 초반 발간된 "증수임영지"에서 재현되고 있으나 고지도에서는 청학동 청학산 청학사 등의 지명 이외에 소금강이란 지명은 발견되지 않는다. '청학산'이란 지명이 최초로 발견되는 문헌은 "신증동국여지승람"이지만, 지명으로서의 최초 기록은 율곡의 "유청학산기"로 이 기록에는 소금강'이란 지명은 찾아볼 수 없고 단지 '청학산'이란 지명만 확인될 뿐이다. '이후 이순인의 "고담일고", 허균의 송별기, 허목의 "청학동구룡연기", 윤순거의 "파동일기" 그리고 이원조의 서간(書簡) 등을 볼 때 약 3세기 이상 이곳은 '청학산' 또는 '청학동'이란 지명으로 불려온 것으로 보인다. 반면에 '소금강'이란 지명이 확인되는 최초 기록은 18세기 중반 작(作)인 강재항의 시이다. 또한 금강사 앞 이능암(二能巖)에 새겨진 '소금강(小金剛)'이란 바위글씨의 주체는 크기, 서법, 전체적인 배치구도와 마모 정도 그리고 지리지의 기록 등을 고려할 때 1870년 또는 1930년에서야 동일한 주체인 이능계원(二能契員)에 의해 새겨진 것으로 보임에 따라 이곳 지명 유래의 탄탄한 근거였던 '소금강(小金剛)' 바위글씨를 율곡의 글씨로 단정할 만한 근거는 없다. 이상의 결과를 종합할 때, 율곡의 "유청학산기" 이후 이곳은 줄곧 '청학산 청학동'으로 불려왔으며 '소금강'이란 지명은 18세기 중반 이후 "입재선생유고" 중 "오언고시조"와 "여지도서"를 시작으로 "동유일기" 등 유람기 등에서도 발견되는 것으로 보아 조선후기 소금강이란 이칭(異稱)이 일반화되면서 혼용되었음을 추론할 수 있다. 요컨대 기존 명승 제1호 지명에 큰 오류가 있다고 보기는 곤란하지만 율곡의 유람과 관련된 명소로서의 장소성을 부각시키는 측면에서는 '청학동 소금강'보다는 '청학산 청학동'이란 지명이 보다 합당한 지명인 것으로 판단한다. 아울러 본 연구과정에서 확인된 1664년 윤선거 일행이 현 식당암에 각자한 '청학산(靑鶴山)', '경담(鏡潭)'의 지명 바위글씨는 고전적 유람 텍스트로서의 "유청학산기"의 영향력을 살필 수 있는 증표이자 기호학파 선비들의 율곡에 대한 숭모와 추념의식이 고스란히 담긴 표식으로 보존이 요망된다. As part of reconsideration on naming of the scenic site No.1 "Myeongju Cheonghak-dong Sogumgang," this study attempts to identify whether there is any mistake with reference to place naming of Korea's No.1 scenic site and if so, to correct the problem by examining the origin of the name and its transition progress through analysis and interpretation of old maps, ancient documents such as traditional geographic books, Yusangi(遊山記) and Letters Carved on the Rocks. The findings of this study are as follows: In traditional geographic books, a term of 'Mt. Cheonghak(靑鶴山)' was first found from "SinjungDonggookyeojisungram(新增東國輿地勝覽)" and after a place name, 'Sogumgang(小金剛)' first appeared in "Yeojidoseo(輿地圖書)" in the middle of the 17th century, it was reproduced in "Jungsuimyeongji(增修臨瀛誌)", which was published in the early 20th century. However, as a result of analyzing old maps, the place name, Sogumgang cannot be found in any local or national map except place names such as Cheonghak-dong, Mt. Cheonghak and Temple Cheonghak. Even though 'Biseonam,' 'Cheonyudong,' 'Gyeongdam' and 'Mt. Cheonghak' appear in Yulgok's "Yucheonghaksangi(遊靑鶴山記)", any part in which 'Sogumgang' was referred is not found. Later, Cheonghak-dong Sogumgang seemed to had been called 'Mt. Cheonghak' or 'Cheonghak-dong(靑鶴洞)' for more than three centuries as seen in Lee Sun-il's "Godamilgo(孤潭逸稿)", Heo Geun's farewell records, Heo Mok's "Cheonghak-dong Guryongyeongi(靑鶴洞九龍淵記)", Yoon Sun-geo(尹宣擧)'s "Padongilgi(巴東日記)" and Lee Won-jo's letters and a poem composed by Gang Jae-hang in the middle of the 18th century is the only record in which the place name, 'Sogumgang' is shown. Meanwhile, 'Sogumgang' carved on Inung Rock(二能巖) in front of Temple Gumgang is presumed to be carved by Inunggyeoone(二能契員) in the 1870s or in 1930s, considering the size of each character, calligraphy, overall layout, wear extent and records in Jiriji. Therefore, no evidence can be found to say that each character of 'Sogumgang' was written by Yulgok because 'Sogumgang' has strong evidences of the origin of its place name. To sum up the findings stated above, since Yulgok's "Yucheonghaksangi", this place seems to have been referred as 'Mt. Cheonghak Cheonghak-dong' and as it is confirmed that the place name, 'Sogumgang' first appeared in "Ohyeongosijo(五言古時調)" of "Ibjaeseonsangyugo(立齋先生遺稿)" and "Yeojidoseo" in the middle of the 18th century, it can be inferred that the place name, Sogumgang had been partly mingled as an another name of Mt. Cheonghak. Therefore, even though it is difficult to say the existing place name has a significant problem, it is thought that it will be better to name 'Mt. Cheonghak Cheonghak-dong' rather than 'Cheonghak-dong Sogumgang' in order to stress on this place's traditional identity as a scenic site related to Yulgok. In addition, as confirmed in this study process, it is said that each character of place names, 'Mt. Cheonghak' and 'Gyeongdam(鏡潭)' and name 'Yoon Sun-geo' carved in Rock Sikdang stated in Yoon Sun-geo's "Padongilgi" in 1964 is a pledge showing the influence of "Yucheonghaksangi" as an ancient travel literature as well as a mark of the Giho school scholars' respect and spirit to honor Yulgok.

ON ANALYTIC SPECTRAL RESOLVENTS

RHO, JAE CHUL,CHO, TAE GEUN,CHA, HYUNG KOO Korean Mathematical Society 1985 대한수학회지 Vol.22 No.1

Analytic Extensions and Local Spectra

RHO, JAE CHUL Korean Mathematical Society 1970 대한수학회지 Vol.7 No.1

The Study on Flora and Distribution Characteristics of Orchidaceae on Moor

Rho, Jae-Hyun 한국환경과학회 2003 한국환경과학회지 Vol.12 No.2

Total 7 moors. Yong-neup on Mt. Daeam, Chilbo Mt. moor, Dogapsa-neup in Mt. Wolchul. Wangdeungjae-neup on Mt. Jiri, Mujechi-neup on Mt. Jungjok, Buljae-neup on Mt. Kyungak and Geoinri-neup on Dongsang, were investigated by literatures and survey. Distribution, condition, and similarity of dominant species and Orchidaceae on moor were analyzed. The results are follows; There are total 46 wetland plant species observed more than twice from 7 moors. The plants classified as constancy class Ⅴ, which are appeared more than 80%, are Iris ensata var. spontane, Juncus effusus var. decipiens, Sanguisorba tenuifolia var. alba, Habenaria linearifolia, Sium ninsi, Lobella sessilifolia, Lastrea thelyptoris, and Eupatorium chinensis var. simplicifolium. Highly apperaing Orchidaceae, which was classified to constancy class Ⅳ plant, are Habenaria livearifolia, Pogonia japonica, Epipactis thunbergii, and Platanthera mandarinorum. They are the typical index plants of the moors. Habitual enviroment of Habenaria rodiata and Platanthera hologlottis can be affected by environmental aspects such as latitude, altitude and the water quality. However those of Habenaria linearifolia, Epipactis thunbergii, and Pogonia japonica are not affected by latitude and altitude, but may be determined by water condition of wetland, As the result of similarity index analysis for appearance of Orchidaceae identifying each moors in the view off species composition, swamps at Dogapas-neup and Buljae-neup. Yong-neup had shown the high similarity indices of 0.85 and 0.75 with Wangdeungjae-neup and Mujechi-neup, respectively. Growth properties of wild Orchidaceae at wetland were almost similar. Platanthera mandarinorum and Liparis kumokiri had characteristics off good adaptability. Most of them need light. Pogonia was the only long-day plant. The flowering time of these Orchidaceae was from May to September.

SPECTRAL INCLUSIONS

RHO, JAE-CHUL,YOO, JONG-KWANG Korean Mathematical Society 1994 대한수학회논문집 Vol.9 No.1

완주 두방 전통마을숲의 복원모형에 관한 실증적 연구

( Jae Hyun Rho ),( Sang Sup Shin ),( Chan Mun Jo ) 한국전통조경학회(구 한국정원학회) 2005 Journal of Korean Institute of Traditional Landsca Vol.3 No.-

Development 0f An Automation Need Assessment Model For A Construction Process

Rho,Jae-Jeung 경성대학교 생산기술연구소 1995 생산기술연구지 Vol.2 No.-

This research endeavor is focused on the development of an automation need assessment model for a construction process to aid the contractor's decision making process regarding the implementation of automation technology into a construction process. In order to break the construction process into a list of tasks, taxonomy analysis is preceded. Through the Time-Benefit-Technology (TBT) method, an Automation Need Index (ANI) is computed to quantify the automation potential of each task in the process. The TBT method is composed of three factors; the time portion factor, the benefit level factor, and the technology availability factor.

한국의 차문화공간과 다원(茶苑)에 관한 연구

( Rho Jae-hyun ),( Jang Hye-young ),( Choi Jong-hee ) 한국전통조경학회(구 한국정원학회) 2018 Journal of Korean Institute of Traditional Landsca Vol.16 No.-

다수의 차문화 관련 사료에도 불구하고, 자연친화적 정원문화 특성으로 인해 한국에는 중국이나 일본에 비해 현존하는 다원이 드물며 그나마도 정리된 자료조차 빈약하다. 본 연구는 문헌 및 현장연구를 통해 한국 차문화를 개관하는 한편 대표적 다정에 대한 입지와 공간 및 시설 특성을 고찰하였다. 음다(飮茶) 주체는 승려를 비롯하여 대부분 선비 혹은 문인 사대부로 문예활동(文藝活動), 수신(修身), 망중한(忙中閑), 은일(隱逸)등의 행위와 사상이 내포되어 있으며 한국의 사찰이나 부속 암자에서는 일본의 다옥(茶屋), 다정(茶庭)과 달리 차를 마실 수 있는 음다공간(飮茶空間)을 별도로 마련하지 않고 간단한 다구(茶具)를 활용하여 자연을 관망하며 자연에 동화될 수 있는 실외원(室外苑)을 찻자리로 택하였다. 조선시대에는 특히 차를 즐기면서 시를 읊은 풍류적인 지식인이 많았는데, 그들 대부분은 별도 공간 없이 숲이나 마당을 자연스럽게 차생활 공간과 연계시키거나 사랑채·다정(茶亭)·누각 등을 자연 속으로 일체화시킨 차문화를 영위하였다. 한국의 전통 차문화공간은 이용주체에 따라 민속신앙과 신선사상에 의한 공간, 불교 및 유교 사상에 의한 공간으로 분류되며 그 공간은 매우 다양하고 가변적이다. 완도 보길도 동천석실, 강진 백운동 별서원림, 강진 다산초당원, 해남 대흥사 일지암 그리고 강릉 선교장 활래정 등 한국에 현존하는 대표적 음다공간은 뜰 안에 닫혀진 ‘다정(茶庭)’이라기보다는 시야가 열린 ‘다원(茶苑)’으로서의 성격이 매우 강했던 것으로 사료된다. Despite the relatively large amount of tea culture related data in Korea, there are few tea culture spaces existing in comparison with China or Japan due to the characteristics of nature-friendly tea culture in Korea. Based on the previous point, this study investigates the location, space, and facility characteristics of Korean tea culture and representative tea that can represent tea culture space. As tea places and tea gardens of Korea indicate, traditional tea culture places are very diverse and variable depending on the places’user and spatial characteristics based on dominant thoughts, such as Taoism, Buddhism, and Confucianism. In addition, Korean tea gardens have strong characteristic with open structure to naturally connect gardens and nature. The representative examples of Korean tea gardens referenced in this article―Dongcheonsuksil Garden, Baegundong Garden, Dasanchodang Garden, Iljiam Hermitage, and Hwallaejung Pavilion―were all created in the Joseon Dynasty. Tea gardens, such as pavilions and forests were mainly located in mountain valleys in order to take advantages of beautiful scenic views and high-quality water. Additionally, the positionning of tea gardens was closely related to the location of Camellia sinensis habitats especially in Jeollanam-do. Tea culture places were for monks, classical scholars, writers and noblemen. Thus, the places commonly hosted literary activities, including poetry, caligraphy, and drawings; and activities, such as moral training, relaxation, and seclusion. Tea gardens belonging to temples were different from Japanese tea houses and gardens: there were no designated places for drinking tea, and outdoor tea places where one could commune with nature when drinking tea using simple tea things were preferred. Noblemen of the Joseon Dynasty did not make specific places for a tea life; instead, they naturally connected their tea life places with forests, yards, houses, and tea pavilions. When drinking tea, noblemen loved and enjoyed the arts in nature, and expanded their world of art. This might be mainly influenced by Taoism ideas. Korean tea gardens are non-standardized and nature itself balances their freedom and autonomy. This characteristic of Korean tea gardens is based on the Korean people’s a intrinsic view of nature.

ON DUALITIES FOR STRONGLY DECOMPOSABLE OPERATORS

RHO, JAE CHUL,CHO, TAE-GEUN Korean Mathematical Society 1990 대한수학회지 Vol.27 No.1