Assessment of the accuracy of several methods for measuring the spatial attitude of geological bodies using an android smartphone
Spatial attitudes are widely used in geological field investigations, to describe the geometry of geological structural surfaces. Smartphones have a variety of sensors that can be used to obtain these measurements. This paper examines several methods for measuring attitudes using smartphones and ana...
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Veröffentlicht in: | Computers & geosciences 2020-03, Vol.136, p.104393, Article 104393 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Spatial attitudes are widely used in geological field investigations, to describe the geometry of geological structural surfaces. Smartphones have a variety of sensors that can be used to obtain these measurements. This paper examines several methods for measuring attitudes using smartphones and analyzes the principles and calculation formulas of these methods. We programmed an Android application to test and analyze the accuracy of different calculation methods. We propose the use of an orientation angle to quantitatively describe the position of the smartphone during measurement. We designed and manufactured a test platform that can change three angles separately, thereby greatly increasing the convenience of the test. The results show that the trigonometric function method can deliver an accurate measurement regardless of the orientation of the phone, and this method is convenient and quick to use.
•Introduced a variety of complete calculation methods of measuring the spatial attitude.•A trigonometric function method using the orientation sensor is proposed, and the results are relatively accurate.•Proposed the orientation angle to quantitatively describe the posture of the mobile phone during measurement.•Designed and manufactured a test bench to simulate multiple angle combinations. |
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ISSN: | 0098-3004 1873-7803 |
DOI: | 10.1016/j.cageo.2019.104393 |