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곽재하,강인준,최철웅 釜山大學校生産技術硏究所 1995 生産技術硏究所論文集 Vol.49 No.-
본 연구는 인공위성 "landsat-5"호를 이용하여 영상분류하는 데 있어 지금까지 특정한 밴드만을 사용하는 기존의 방법을 개선하여 7밴드 모두를 사용하였다. 각 밴드별의 밝기값은 ISODATA 분류방식을 이용하여 획득하였으며 각 영상에서 획득한 자료는 그리드 해석방법으로 해석하기위하여 그리드 형태로 변환하였다. 이과정에서 각 밴드별 밝기값은 통계학적 정확한 분석방법으로 역산출하여 재분류를 하였다. 또 본 연구는 칼라항공사진을 이용하여 검정을 하였으며 기존의 arctangent, ratio, ND, TVI방법과 비교 연구를 병행하였다. Authors analyzed the 7 bands of Lands at TM data rather than use of a certain specific band according to their divergence of band to classify the satellite image data. The range of brightness values in minimum and maximum were detected by ISODATA unsupervised classification. Each detected Image datum are transformed into grid file to analysis the extracted values by grid analysis method. Reclassification performed using extracted values of each classes by their statistic accuracy analysis. Authors can accesses the accuracy of classification values using the color airphoto(scale 1:10,000). Classification method are arctangent, ratio, ND and TVI to compare with this classification techniques.
곽재하,강성수,강인준 釜山大學校 都市問題硏究所 1996 都市硏究報 Vol.4 No.-
Global positioning system and its vectors are referenced in the WGS 84 datum. Because Tokyo datum is used in Korea, usually geodetic coordinate system transformation is need to use GPS data directly. Basically GPS surveying results are length and direction of base line. Authors could use the relational distance and direction within two stations, directly, in practical coordinates system without the transformation of coordinates in GPS data. The triple differenced carrier phase obserbables yields the relative positioning between the co-observing receivers, usually referred to as the 3-dimensional vector between the stations. In this study, we could obtained the practical position data without coordinate transformation, with known geodetic results of Korea and GPS triple differenced carrier phase observables.