A Basic Study on Position Fixing by Free Gyros

Park, Sok-Chu; Jeong, Tae-Gweon

Journal of Navigation and Port Research 2004;28(8):653-657.
Published online October 31, 2004.

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박석주, 정태권

A Basic Study on Position Fixing by Free Gyros

Sok-Chu Park, Tae-Gweon Jeong

Abstract

The authors aim to design further an upgraded and self-contained position fixing system to meet the future commercial requirements. As a first step this paper is to investigate the theoretical structure of position fixing based on the nature of free gyro, in which the tilt angles of the two spin aces at an arbitrary position are measured respectively and the elapsed time with respect to a reference position or starting point is observed. And it illustrates some limitations to be expected in this system.

Key Words: free gyro;tilt angle;right ascension;gyro vector;position vector;angular velocity of the earth’s rotation

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