Results 31 to 40 of about 471,759 (201)

Antarctic Sedimentary Basins and Their Influence on Ice‐Sheet Dynamics

Reviews of Geophysics, Volume 61, Issue 3, September 2023., 2023
Abstract Knowledge of Antarctica's sedimentary basins builds our understanding of the coupled evolution of tectonics, ice, ocean, and climate. Sedimentary basins have properties distinct from basement‐dominated regions that impact ice‐sheet dynamics, potentially influencing future ice‐sheet change.
A. R. A. Aitken, L. Li, B. Kulessa, D. Schroeder, T. A. Jordan, J. M. Whittaker, S. Anandakrishnan, E. J. Dawson, D. A. Wiens, O. Eisen, M. J. Siegert   +10 more
wiley   +1 more source

Distributed data fusion algorithms for inertial network systems [PDF]

, 2008
New approaches to the development of data fusion algorithms for inertial network systems are described. The aim of this development is to increase the accuracy of estimates of inertial state vectors in all the network nodes, including the navigation ...
Jia, Huamin, Allerton, David J.
core   +1 more source

Research status and prospect of shearer positioning technology on fully mechanized coal mining face

Gong-kuang zidonghua, 2017
On the basis of development status of shearer positioning technology on fully mechanized coal mining face at home and abroad, characteristics of conventional shearer positioning technology, shearer positioning technology based on strapdown inertial ...
XIA Ting, LI Wei, WANG Chao, LI Yuche
doaj   +1 more source

An improved initial alignment method based on adaptive robust CKF algorithm

Xibei Gongye Daxue Xuebao, 2022
When the misalignment angle is a large angle in the strapdown inertial navigation system (SINS), it is necessary to establish a nonlinear error model to estimate the error.
LI Pu, YANG Tao, MU Hongwei
doaj   +1 more source

Research on the Update Method of Attitude Quaternion for Strapdown Inertial Navigation [PDF]

IEEE Access, 2021
In the strapdown inertial navigation system, the accuracy of the solving attitude and position is closely related to the quaternion update algorithm. For this reason, what method is used to update the quaternion has become an important project. At present, the primary method is to update the quaternion by solving the equivalent rotation vector.
Debiao Zhang, Jie Li 0036, Yang Liu 0210, Xiaokai Wei, Kaiqiang Feng   +4 more
openaire   +3 more sources

Cook Ice Shelf and Ninnis Glacier Tongue Bathymetry From Inversion of Operation Ice Bridge Airborne Gravity Data

Geophysical Research Letters, Volume 50, Issue 11, 16 June 2023., 2023
Abstract The seafloor depths under the Cook Ice Shelf and Ninnis Glacier Tongue have not been directly measured, despite their importance for understanding ocean circulation and ice shelf change. We model the bathymetry underneath the floating ice and surrounding ocean using airborne gravity data.
Renata R. Constantino, Kirsty J. Tinto
wiley   +1 more source

Multisensor Data Fusion for Robust Pose Estimation of a Six-Legged Walking Robot [PDF]

, 2011
For autonomous navigation tasks it is important that the robot always has a good estimate of its current pose with respect to its starting position and - in terms of orientation - with respect to the gravity vector.
Chilian, Annett, Hirschmüller, Heiko, A. Chilian, H. Hirschmuller, Görner, Martin, M. Gorner   +5 more
core   +1 more source

Atom Strapdown: Toward Integrated Quantum Inertial Navigation Systems [PDF]

, 2023
We present an alternative technique for estimating the response of a cold atom interferometer (CAI). Using data from a conventional inertial measurement unit (IMU) and common strapdown terminology, the position of the atom wave packet is tracked in a ...
Abend, Sven, Tennstedt, Benjamin, Rajagopalan, Ashwin, Schön, Steffen, Weddig, Nicolai B., Rasel, Ernst M.   +5 more
core   +1 more source

Improving the speed of initial alignment for marine strapdown inertial navigation systems using heading control signal feedback in extended Kalman filter

International Journal of Advanced Robotic Systems, 2020
In this article, a method was proposed for strapdown inertial navigation systems initial alignment by drawing on the conventional alignment method for stable platform navigation systems.
Hossein Rahimi, Amir Ali Nikkhah
doaj   +1 more source

Airborne Absolute Gravimetry With a Quantum Sensor, Comparison With Classical Technologies

Journal of Geophysical Research: Solid Earth, Volume 128, Issue 4, April 2023., 2023
Abstract We report an airborne gravity survey with an absolute gravimeter based on atom interferometry and two relative gravimeters: a classical LaCoste&Romberg (L&R) and a novel iMAR strapdown Inertial Measurement Unit. We estimated measurement errors for the quantum gravimeter ranging from 0.6 to 1.3 mGal depending on the flight conditions and the ...
Y. Bidel, N. Zahzam, A. Bresson, C. Blanchard, A. Bonnin, J. Bernard, M. Cadoret, T. E. Jensen, R. Forsberg, C. Salaun, S. Lucas, M. F. Lequentrec‐Lalancette, D. Rouxel, G. Gabalda, L. Seoane, D. T. Vu, S. Bruinsma, S. Bonvalot   +17 more
wiley   +1 more source