@article{Hayashi_Terada_2026,
	author = {Hayashi, Taisei and Terada	, Daisuke},
	title = {Study of North Finding System with Low-cost MEMS Gyro Sensor and 3-axis Small Turntable under Non horizontal and Magnetically Disturbed Environments for UUVs},
	journal = {TransNav, the International Journal on Marine Navigation and Safety of Sea Transportation},
	volume = {20},
	number = {2},
	pages = {353-364},
	year = {2026},
	url = {./Article_Study_of_North_Finding_System_with_Hayashi,78,1665.html},
	abstract = {This study developed a north-finding system using low-cost sensors and a small 3-axis turntable, even in non-horizontal and magnetically disturbed environments. First, the accuracy of the developed turntable was examined based on image-based analysis. Second, the turntable was rotated to estimate an ellipsoid from the resulting point cloud, enabling use non-horizontal environment. Finally, two experiments were conducted. The first experiment is to identify the four directions. To enhance the precision of the results, it is necessary to increase the amount of experimental data. In order to the time required, this study adopted a method of increasing the amount of data through simulation by sampling without replacement. The second experiment is to detect the due north under the condition that the due north is unknown. As a result, the proposed method achieved an accuracy of Âa10° in approximately 27 min, and Âa0.59° in approximately 3.29 h, demonstrating enable to use these environments.},
	doi = {10.12716/1001.20.02.10},
	issn = {2083-6473},
	publisher = {Gdynia Maritime University, Faculty of Navigation},
	keywords = {Safety of Navigation, Global Navigation Satellite System (GNSS), Aids to Navigation (AtoN), Methods and Algorithms, Navigation, Manoeuvering and Ship-handling Simulation, Unmanned Underwater Vehicles (UUV), MEMS Gyroscope, North Finding System}
}