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박운용,안상준,나종기 동아대학교 건설기술연구소 2002 硏究報告 Vol.26 No.1
Remote sensing is the science and of obtaining information about an object, area, or phenomenon through the analysis of data acquired by a device that is not in contact with the object, area, or phenomenon under investigation. In this study, we presents methods by which the geometric detail in an image may be modified and enhanced. The specific techniques covered are applied to the image data directly and could be called image domain techniques. This use of spatial masks themselves are called spatial filters, In this study, we consider to image enhancement for Sobel filter, Prewitt filter, Laplacian filter and etc.
이재원,송연경,나종기 東亞大學校 2004 東亞論叢 Vol.41 No.-
Nowadays, The position, velocity and time can be acquired by using the satellite signals of GPS. The signals are used to compute positioning of three dimensions and timing offset of the receiver clock when we can track the tour satellite signals at least. One of the specified aims is to use less expensive single frequency code/carrier phase GPS receivers, which are typically around half the price of dual frequency receivers. In the study, the author analyzed the accuracy and applicability of frequence linear combination using triangulation points evaluated distance limitation.
Beacon GPS를 이용한 수치지도 수정 정확도 평가
박운용,윤부열,나종기,김용석 東亞大學校 建設技術硏究所 2005 硏究論文集 Vol.29 No.1
Nowadays, a various scale's digital map headed by nation base-map is manufactured in this country. this digital map is used Aerial Photograph or Satellite Image. and The result operated a new manufacture, amendment and update. but it has problem that immediate modification or update about topography and terrian at this time. consequently, this paper takes advantage of further cheaper. it is possible single observation by the Beacon GPS used this paper comes forth with rapid digital map's amendment and update plan of work.
박운용,김용석,나종기,윤부열 東亞大學校 建設技術硏究所 2005 硏究論文集 Vol.29 No.1
Currently, item about legislation and regulation about sea area is unprepared and it is family circumstances that study finding is very badly off yet in reply. And cadastral connection item is bery sensitive segment part because that is item connected with manus. This is part cause a lot of processing of dispute by difference of pros and cons between local government is arisen in whole country every where. However, it is mutual agreement or real condition been settling by method by control of technique of law and government between each other by unpreparedness of technological member and connection legislation. In this study, arranged about cadastral boundary delimitation an investigate Gadeokdo Island about satellite image and boundary that is fixed on NGII(National Geographic Information Institute) of digital map laying stress on new port. And, that use GPS survey satellite image in technological member urgently computerize should.
RTK-GPS와 E/S를 이용한 저수지의 3D 모델링 형상 구현과 효율성 분석
이재원,송연경,나종기 東亞大學校 2004 東亞論叢 Vol.41 No.-
A lot of small-scale reservoirs that is extravagant in whole country are controlled state or real condition that correct data about the practice contents is not equipped all up to now. In this study, YungNam districts that region Gyeong-Ju city reservoir is distributed much of when flow speedily choose 23 peace among 73 small scale reservoir and experimented. Acquired data every 5 seconds, and user E/S and user value TS for orthocenter to 1 second interval and executes present condition measurement using RTK-GPS. Could was wave and state that reservoir of 15 places (about 65%) gives protective care that do 3D modelling with acquired data, and now correct contents about reservoir state past through comparative analysis with data. Also, area of full water and wave that analyze effective storage and area of full water of 223 places reservoir could know that 20.63%, effective storage decreased as 3.34%. I wish to contribute about analysis about present reservoir state through this and method the adminstration direction