Results 201 to 210 of about 14,714 (253)

Applied Quaternion Optimization Method in Transfer Alignment for Airborne AHRS Under Large Misalignment Angle

IEEE Transactions on Instrumentation and Measurement, 2016
The airborne attitude and heading reference system (AHRS) is an inertial system that provides the aircraft with navigation parameters in real time. A new coarse transfer alignment method is proposed for low-accuracy AHRS with a large misalignment angle between AHRS and master inertial navigation system (MINS). The new coarse alignment method is derived
Jiazhen Lu, Baoguo Li
exaly   +2 more sources

A SE(2)-based transfer alignment for large installation misalignment angle

Measurement: Journal of the International Measurement Confederation, 2023
Yu Guo, Yunpeng Guo
exaly   +2 more sources

Application of Improved CKF in SINS Initial Alignment with Large Misalignment Angles

2020 27th Saint Petersburg International Conference on Integrated Navigation Systems (ICINS), 2020
In order to improve the alignment accuracy and reduce time for the initial alignment of SINS, an improved CKF method is proposed. SINS nonlinear error model with large initial misalignment angles is built up. Based on the basic algorithm of CKF, multiple fading factors are introduced to the covariance matrix of the prediction errors to modulate gain ...
Ying Liu, Ti-Jing Cai, Li-Ming Wu
openaire   +1 more source

Polar transfer alignment of shipborne SINS with a large misalignment angle

Measurement Science and Technology, 2016
Existing polar transfer alignment (TA) algorithms are designed based on linear Kalman filters (KF) to estimate misalignment angles. In the case of a large misalignment angle, these algorithms cannot be applied in order to achieve accurate TA. In this paper, a TA algorithm based on an unscented Kalman filter (UKF) is proposed to solve the problem of the
Jianhua Cheng, Tongda Wang, Dongxue Guan, Meiling Li   +3 more
openaire   +1 more source

MIMU Parameter Identification for Large Misalignment Angles Based on AFSA

Applied Mechanics and Materials, 2014
High precision calibration of Micro inertial measurement unit (MIMU) for large installation misalignment can improve the instrument and the practical use of the system precision. It can use high precision turntable to get the coarse value of installation misalignment angle as the optimization initial value, and take the standard deviation of turntable ...
Kun Peng He, Chen Yang Wang, Yuan Li
openaire   +1 more source

A fast alignment method for SINS with large misalignment angles based on ADRC

2017 Integrated Communications, Navigation and Surveillance Conference (ICNS), 2017
Alignment accuracy and alignment time are two important indexes of the initial alignment procedure of a strapdown inertial navigation system (SINS). However, large misalignment angles will bring nonlinear problems of SINS error models and prolong the convergence time of the initial alignment procedure.
null Dongrui Yang, null Xiaosu Xu, null Tao Zhang, null Jin Sun, null Yiqing Yao   +4 more
openaire   +1 more source

Novel nonlinear filter for sins initial alignment with large misalignment angles

2016 Integrated Communications Navigation and Surveillance (ICNS), 2016
In order to improve the precision and convergence rate of SINS initial alignment with large misalignment angles, a novel nonlinear filtering method, referred as square root simplex unscented quadrature Kalman filter (SR-SUQKF) is introduced into the initial alignment in this paper. By using the method of simplex unscented transformation to select a few
null Bo Yang, Xiaosu Xu, null Tao Zhang, Xinyu Liu   +3 more
openaire   +1 more source

A novel gyrocompass alignment method under large azimuth misalignment angle

Journal of Shanghai Jiaotong University (Science), 2015
Conventional gyrocompass alignment methods are based on relatively small azimuth misalignment angles. However, a marine strapdown inertial navigation system may face large azimuth misalignment angle caused by a failed coarse alignment algorithm. This paper provides a novel gyrocompass alignment method to solve the problem.
Feng-mei Wei, Jian-pei Zhang, Jing Yang, Shu-qiang Jiang, Song-lin Xie   +4 more
openaire   +1 more source