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A Theoretical Study on Free Gyroscopic Compass
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 Title & Authors
A Theoretical Study on Free Gyroscopic Compass
Jeong, Tae-Gweon; Park, Sok-Chu;
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The authors aim to establish the theory necessary for developing the free gyroscopic compass and focus on mainly two points. One is to suggest north-finding principle by the angular velocity of the earth's rotation, and the other is to suggest orthogonal coordinate transformations of the motion rate of the spin axis, which transforms the components of motion rate in the free gyro frame into those in the platform frame and that this transformed rate is, in turn, transformed into the NED(north-east-down) navigation frame. Subsequently, ship's heading is obtained by using the fore-aft and athwartship components of the motion rate of the spin axis in the NED frame. In addition it was found how to solve the transformation matrix necessary for transforming each frame.
Free gyro;Angular velocity of the earth's rotation;Motion rate of spin axis;Gyro frame;Platform frame;NED navigation frame;
 Cited by
자유자이로 위치 및 방위시스템의 오차에 관한 연구,정태권;

한국항해항만학회지, 2013. vol.37. 4, pp.329-335 crossref(new window)
An Algorithmic Study on Free-gyro Positioning System( I ) - Measuring Nadir Angle by using the Motion Rate of a Spin Axis -,Jeong, Tae-Gweon;Park, Sok-Chu;

한국항해항만학회지, 2007. vol.31. 9, pp.751-757 crossref(new window)
A Study on the Errors in the Free-Gyro Positioning and Directional System, Journal of Korean navigation and port research, 2013, 37, 4, 329  crossref(new windwow)
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