Real-time single-frequency GPS/MEMS-IMU attitude determination of lightweight UAVs.
TLDR
A newly-developed direct georeferencing system for the guidance, navigation and control of lightweight unmanned aerial vehicles (UAVs), having a weight limit of 5 kg and a size limit of 1.5 m, and for UAV-based surveying and remote sensing applications is presented.Abstract:
In this paper, a newly-developed direct georeferencing system for the guidance, navigation and control of lightweight unmanned aerial vehicles (UAVs), having a weight limit of 5 kg and a size limit of 1.5 m, and for UAV-based surveying and remote sensing applications is presented. The system is intended to provide highly accurate positions and attitudes (better than 5 cm and 0.5°) in real time, using lightweight components. The main focus of this paper is on the attitude determination with the system. This attitude determination is based on an onboard single-frequency GPS baseline, MEMS (micro-electro-mechanical systems) inertial sensor readings, magnetic field observations and a 3D position measurement. All of this information is integrated in a sixteen-state error space Kalman filter. Special attention in the algorithm development is paid to the carrier phase ambiguity resolution of the single-frequency GPS baseline observations. We aim at a reliable and instantaneous ambiguity resolution, since the system is used in urban areas, where frequent losses of the GPS signal lock occur and the GPS measurement conditions are challenging. Flight tests and a comparison to a navigation-grade inertial navigation system illustrate the performance of the developed system in dynamic situations. Evaluations show that the accuracies of the system are 0.05° for the roll and the pitch angle and 0.2° for the yaw angle. The ambiguities of the single-frequency GPS baseline can be resolved instantaneously in more than 90% of the cases.read more
Citations
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References
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Book
Strapdown inertial navigation technology
David Titterton,John Weston +1 more
TL;DR: In this paper, the physical principles of inertial navigation, the associated growth of errors and their compensation, and their application in a broad range of applications are discussed, drawing current technological developments and providing an indication of potential future trends.
Journal ArticleDOI
The least-squares ambiguity decorrelation adjustment: a method for fast GPS integer ambiguity estimation
TL;DR: In this article, an ambiguity decorrelation approach is introduced to flatten the typical discontinuity in the GPS-spectrum of ambiguity conditional variances and return new ambiguities that show a dramatic improvement in correlation and precision.
Book
Inertial navigation systems with geodetic applications
TL;DR: In this article, the global positioning system (GPS) geodetic application is considered and an initialization and alignment of the GPS system is described in terms of the inertial measurement unit (IMU).
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