Results 41 to 50 of about 703 (158)
Wireless Communications and Mobile Computing, Volume 2022, Issue 1, 2022., 2022 Unmanned underwater vehicles (UUVs) that are widely utilized for underwater cooperative combat, underwater environment detection and underwater resource exploration have to be localized by underwater acoustic sensor networks (UASNs). However, the localization accuracy is hard to guarantee due to the limited bandwidths, long propagation latency, and ...
Ruiheng Liao +4 more
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Swimming Attitude for Tracking Error Correction Based on Mahony Algorithm
Mobile Information Systems, Volume 2022, Issue 1, 2022., 2022 Swimming is predominantly a long‐distance endurance sport. In this sport, like in many others, monitoring and tracking swimming attitude error correction and how it changes over time is critical. Besides, in swimming posture measurement, due to the absorption and refraction of various signals of water, sensors relying on external information cannot ...
Zheng Chang, Yu Zhao, Mian Ahmad Jan
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Mobile Information Systems, Volume 2022, Issue 1, 2022., 2022 With the continuous development of positioning technology in today’s world, the accuracy requirements for navigation and positioning are also getting higher and higher. Global Positioning and Navigation System (GPS) can provide high‐precision long‐term navigation and positioning information.
Ning Wang, Liming Chen
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Research on Algorithms for Multi‐Vector Attitude Determination
Mathematical Problems in Engineering, Volume 2022, Issue 1, 2022., 2022 Various attitude estimation methods are based on an optimization problem posed in 1965 by Grace Wahba, which is called Wahba’s problem in the field of attitude estimation. As a key for attitude determination, many different algorithms for minimizing Wahba’s loss function have been proposed in the past 60 years.
Yilin Liu +4 more
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Mathematical Problems in Engineering, Volume 2022, Issue 1, 2022., 2022 As an emerging means of transportation for the intelligent transportation system (ITS) in aviation and aerospace, hypersonic cruise vehicles (HCVs) have received numerous research interests during the past several decades. However, the navigation and positioning strictly limit the progress and application of HCVs due to their special characteristics on
Fei Xu +3 more
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Novel Special Orthogonal Group Optimization for Coarse Alignment Method of SINS on a Rocking Base
International Journal of Aerospace Engineering, Volume 2022, Issue 1, 2022., 2022 In order to solve the coarse alignment problem of the strapdown inertial navigation system on a rocking base, a fast coarse alignment method using the Special Orthogonal Group optimization has been proposed in this paper. In this method, based on the alignment idea of tracing gravitational apparent motion in inertial frame, the model of coarse ...
Fujun Pei +4 more
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Wireless Communications and Mobile Computing, Volume 2022, Issue 1, 2022., 2022 In recent years, along with microelectromechanical (MEMS) technique and wireless body area network (WBAN), wearable health monitoring systems have emerged. With sustainability posture detection technique, people pay more and more attention to mankind posture detection.
Wei Jin, Xin Ning
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Research on IMU Calibration Model Based on Polar Decomposition
Micromachines, 2023 As an important deterministic error of the inertial measurement unit (IMU), the installation error has a serious impact on the navigation accuracy of the strapdown inertial navigation system (SINS).
Guiling Zhao +5 more
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Robust adaptive Kalman filter for strapdown inertial navigation system dynamic alignment
IET Radar, Sonar &Navigation, Volume 15, Issue 12, Page 1583-1593, December 2021., 2021 Abstract The measurement noise covariance R plays a vital role in the Kalman filter (KF) algorithm. Traditionally, a constant R is obtained by experience or experiments. However, the KF cannot achieve optimal estimation using constant R under non‐Gaussian conditions.
Bing Zhu +4 more
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IET Radar, Sonar &Navigation, Volume 15, Issue 12, Page 1727-1735, December 2021., 2021 Abstract The issue of non‐linear robust state estimation in the integration of a strapdown inertial navigation system and global positioning system is addressed in this study. Based on the cubature Kalman filtering frame, a non‐linear robust filter called a robust cubature Kalman filter (RCKF) was introduced to address the outliers and the inaccurate ...
Zhangjun Yu +4 more
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