Results 211 to 220 of about 37,036 (246)
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On algorithms for attitude estimation using GPS
Proceedings of the 39th IEEE Conference on Decision and Control (Cat. No.00CH37187), 2002This paper discusses algorithms for attitude determination using GPS differential phase measurements, assuming that the cycle integer ambiguities are known. The problem of attitude determination is posed as a parameter optimization problem where a new quaternion-based cost function is used. Since the new cost function is not a simple quadratic form and
Assaf Nadler +2 more
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Kalman Filtering for Spacecraft Attitude Estimation
Journal of Guidance, Control, and Dynamics, 1982HIS report reviews the methods of Kalman filtering in attitude estimation and their development over the last two decades. This review is not intended to be complete but is limited to algorithms suitable for spacecraft equipped with three-axis gyros as well as attitude sensors.
E. LEFFERTS, F. MARKLEY, M. SHUSTER
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Attitude estimation using moment invariants
Pattern Recognition Letters, 1993The problem of estimating the three-dimensional rotational parameters of a rigid body from its monocular image data has been considered using the method of moment invariants. Second- and third-order moment invariants are used to construct the feature vector for the scale and orientation independent identification of the camera view axis direction in ...
Mukundan, R, Malik, NK, Ramakrishnan, KR
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On range and attitude estimation
Proceedings of 1994 IEEE Position, Location and Navigation Symposium - PLANS'94, 2002Two algorithms to support an airborne, gimballed, electro-optical sensor are described. They have been designed for "Litening", a new targeting and navigation pod, which has been developed by Rafael. A full inertial measurement unit (IMU), capable of measuring linear acceleration and angular velocity, in three orthogonal axes, is mounted in the inner ...
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Optimal estimation of ship's attitudes and attitude rates
IEEE Journal of Oceanic Engineering, 1979Estimation of ship rotational motions induced by ocean waves plays a central role in many navigation and fire control applications. Inertial-type instruments are available which give good measurements of the attitude, but some form of signal processing is necessary to obtain angular rates or predict attitudes.
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Constraint in Attitude Estimation Part II: Unconstrained Estimation
The Journal of the Astronautical Sciences, 2003A complete and careful foundation is presented for maximum-likelihood attitude estimation and the calculation of measurement sensitivity matrices with the intent of revealing heretofore undisclosed pitfalls associated with unconstrained quaternion estimation.
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SATELLITE ATTITUDE ESTIMATION SYSTEM AND SATELLITE ATTITUDE ESTIMATION METHOD
2022UMEGAKI CHIKA +4 more
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ATTITUDE ESTIMATION APPARATUS AND ATTITUDE ESTIMATION METHOD
2021OZASA TAKAYUKI +3 more
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