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Compact North Finding System

Research output: Contribution to journalArticleScientificpeer-review


Original languageEnglish
Pages (from-to)2554-2563
Number of pages10
JournalIEEE Sensors Journal
Issue number8
Early online date18 Jan 2016
Publication statusPublished - 15 Apr 2016
Publication typeA1 Journal article-refereed


The knowledge of orientation of an object with respect to earth-fixed reference coordinate system is crucial in many applications. For instance, in oil mining it is very crucial to accurately know the orientation of the drilling equipment under the earth surface to drill through desired path. In this context we propose a compact inertial sensor system that estimates the instantaneous orientation of the system using accelerometer and gyroscope-derived tilt and azimuth angles. To keep the system size small, we use two-axis accelerometer and one-axis gyroscope. In addition, to avoid high sensor cost, the sensor biases are removed using indexing method. The proposed system estimates the orientation of the compact system in almost all of the orientations and additionally it also provides the measurement accuracy and integrity values that help in ascertaining the validity of the orientation estimate.

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Field of science, Statistics Finland

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