Hyung-Ju Kang

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This paper proposes a 3D path tracking method for a class of torpedo-type AUVs (autonomous underwater vehicles) with general form of dynamics. For this kind of AUV, there are only three control inputs are available for its 6DOF 3D motion, and therefore it's a typical underactuated system. First, we introduce certain two spherical coordinate transformations(More)
For underwater control and localization of an unmanned underwater vehicle (UUV), we have used vision information of a suggested pattern image. The pattern is based on suggested criteria. From the pattern specialized on direction information we extracted directional lines and had done Double Hough Transform (DHT) method on them. Once Hough Transform (HT) is(More)
This paper considers the initial alignment problem for underwater robot's strapdown inertial navigation system. In general, initial alignment can be roughly divided into three types; coarse alignment, gyro compassing, and aided alignment. For underwater robot, gyro compassing is not suitable for its initialization, since it is difficult to accurately rotate(More)
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