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Abstract

Small-sized unmanned aircraft systems (UAS) are restricted to use only lightweight microelectromechanical systems (MEMS)- based inertial measurement units (IMUs) due to their limited payload capacity. Still, some UAS-based geospatial remote sensing applications, such as airborne spectroscopy or laser scanning, require high accuracy pose (position and orientation) determination of the onboard sensor payload. This study presents ground-based experiments investigating the pose accuracy of two MEMS-based IMUs: the single-antennaMTi-G-700 (Xsens, Enschede, Netherlands) and the dual-antenna/dual-frequency Spatial Dual IMU (Advanced Navigation, Sydney, Australia)/global navigation satellite system (GNSS).A tightly coupled and postprocessed pose solution froma fiberoptic gyroscope (FOG)-based NovAtel synchronized position attitude navigation (SPAN) IMU (NovAtel, Calgary, Canada) served as a reference to evaluate the performance of the two IMUs under investigation. Results revealed a better position solution for the Spatial Dual, and the MTi-G-700 achieved a better roll/pitch accuracy. Most importantly, the heading solution from the dual-antenna configuration of the Spatial Dual was found to be more stable than the heading obtained with the reference SPANIMU.

Item Type:	Article
Authors/Creators:	Gautam, D and Lucieer, A and Malenovsky, Z and Watson, C
Keywords:	unmanned aircraft systems (UAS), fiberoptic gyroscope (FOG), microelectromechanical systems (MEMS), inertial measurement units (IMUs), global navigation satellite system (GNSS), accuracy, pose
Journal or Publication Title:	Journal of Surveying Engineering
Publisher:	Asce-Amer Soc Civil Engineers
ISSN:	0733-9453
DOI / ID Number:	10.1061/(ASCE)SU.1943-5428.0000225
Copyright Information:	© 2017 ASCE
Related URLs:	Google Scholar: Gautam, D Google Scholar: Lucieer, A UTAS Profile: Lucieer, A Google Scholar: Watson, C UTAS Profile: Watson, C
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