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Steepest descent quaternion attitude estimator
Aerospace Science and Technology, 2018Abstract A new computationally inexpensive attitude determination algorithm based on the minimization of Wahba's loss function is presented in the paper. The estimation problem is converted into quaternion representation and solved with iterative prediction–correction scheme.
Pawel Zagorski +2 more
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Subjective Estimate Approach to Scaling Attitude Statements
Perceptual and Motor Skills, 1966Statements expressing attitudes toward labor unions were scaled by two groups of judges. One group of 54 5s used a subjective estimate procedure which presented stimuli in pairs and S expressed his judgment by regulating his rate of tapping a telegraph key.
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Neural Network-Based Attitude Estimation
2020Have an accurate information about the system state is a big challenge in several applications, such as guidance, navigation and control of drones, aircrafts and autonomous robots. INS (Inertial Navigation System) can provide information about attitude of vehicle on which is attached.
Djamel Dhahbane +2 more
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Rotation Vector in Attitude Estimation
Journal of Guidance, Control, and Dynamics, 2003An alternative derivation of the spacecraft attitude determination filter is developed to avoid questions of quater-nion normalization or attitude matrix orthogonality constraints, quaternion covariance, and subterfuges used to circumvent these problems. This derivation is based on the Bortz equation for the rotation vector. Because the rotation vector
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New quaternion attitude estimation method
Journal of Guidance, Control, and Dynamics, 1994(5) The assumed orthogonality of A and properties of the trace give \\A -B\\ 2 = tr[(A -B)(A -B)T] = 3-2 tr(ABT) + \\B\\ (6)
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Estimating Risk Attitudes in Denmark [PDF]
, 2004 We estimate individual risk attitudes using controlled experiments in the field in Denmark. These risk preferences are elicited by means of field experiments involving real monetary rewards. The experiments were carried out across Denmark using a representative sample of 253 people between 19 and 75 years of age.
E. Elisabet Rutstrom +2 more
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