Modeling and Analysis of Installation Error of Uniaxial Gyro North Finder

Abstract

Single gyro north finder is widely used at present because of its low price and convenience. The installation error is modeled and analyzed for it in this paper. Firstly, the single-gyro northseeking principle is introduced. Then, the trajectory of the gyro sensitive axis when there is installation error of the north finder is analyzed comprehensively, and a unified model of the angular velocity which is measured by gyroscope is established. Based on the model, error analysis is performed for the commonly used static multi-position north seeking methods, which provides a reference for the design and maintenance of the north finder.