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김용보(Yong-Bo Kim),김진후(Jin-Hu Kim) 한국마린엔지니어링학회 2005 한국마린엔지니어링학회 학술대회 논문집 Vol.2005 No.-
In this study, among the precision decline main causes of sounding, I suggested the characteristics of sounding data acquired by echo sounder with increasing of turbidity For this, I acquired sounding data by inputting turbidity inducer artificially in artificial water tank. And then achieved regression analysis. Conclusion are as following : Sounding Capabilities can be divided into three ranges according to the turbidity : normal range, critical range and the range where data can not be obtained by an echo sounder.
김용보 東亞大學校 建設技術硏究所 2005 硏究論文集 Vol.29 No.1
Accuracy improvement in determination of three-dimensional location on the sea has been studied quite much by adding the characteristics of the sea to the three-dimensional positioning methods on land. However, there are only a few studies on the accuracy improvement concerning water depth measurement and seafloor topography, which is required for almost all of the works in ocean, such as dredging, reclamation, habor construction and constructing ocean facilities. In this study, among the precision decline main causes of sounding, I suggested the characteristics of sounding data acquired by echo sounder with increasing of turbidity For this, I acquired sounding data by inputting turbidity inducer artificially in artificial water tank. And then achieved regression analysis. Conclusion are as following : Sounding Capabilities can be divided into three ranges according to the turbidity : normal range, critical range and the range where data can not be obtained by an echo sounder
김용보,백기석 東亞大學校 建設技術硏究所 2006 硏究論文集 Vol.29 No.2
Inertial sensor continually provide attitude angles and velocity of moving body using gyro and accelerometer irrespective of the environment. Ordinarily, attitude angle calculated by accelerometer and gyros increases with time. Therefore the additional information is required to correct the error. In this paper, error compensation formulae of attitude angles, roll and pitch angles, are suggested by experiment for attitude angle of moving body using low-cost inertial sensor.
김용보,백기석 東亞大學校 建設技術硏究所 2005 硏究論文集 Vol.29 No.1
Recently, researcher who combine surveying instruments used by only each peculiar function in existing is gone abuzz. It can be said that following studies are examples : Airbone-GPS combined GPS(Global Positioning System) with photogrammetry, combination of IMU(Inertial Measurement Unit) with Airbone-GPS, satellite image with GPS and GPS with echo sounder. Specially, practical application degree about combination with ineria sensor is rising very specially among them. The purpose of this study is to grasp IMU's initialization characteristic We achieved experiments about three initialization form for this. Through the experiment, in the case of roll angle, It was seen that the trend is stabilized after descent while it rises greatly an in the case of pitch angle, trend that is stabilized immediately was confirmed about 3 initialization form, however there was difference in initialization time that IMU's initialization process is stabilized.