On the Large Apparent Black Hole Spin-orbit Misalignment Angle in GW200115 [PDF]
The Astrophysical Journal Letters, 2021 Abstract GW200115 is one of the first two confidently detected gravitational-wave events of neutron star–black hole mergers. An interesting property of this merger is that the black hole, if spinning rapidly, has its spin axis negatively aligned (with a misalignment angle >90°) with the binary orbital angular momentum vector. Although
X. J. Zhu
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Application of Adaptive Robust CKF in SINS/GPS Initial Alignment with Large Azimuth Misalignment Angle [PDF]
Mathematical Problems in Engineering, 2021 When the strapdown inertial navigation system does not perform coarse alignment, the misalignment angle is generally a large angle, and a nonlinear error model and a nonlinear filtering method are required. For large azimuth misalignment, the initial alignment technology with a large azimuth misalignment angle is researched in this paper.
Zhang Bing +4 more
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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 +3 more
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Study on Initial Alignment Under Large Misalignment Angle
Journal of Information Hiding and Privacy Protection, 2019 Qi Wang, Changsong Yang, Shaoen Wu
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A Se(2)-Based Transfer Alignment for Large Installation Misalignment Angle
Measurement, 2023 Bo Xu, Yu Guo, Yunpeng Guo, Xiaoyu Wang
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Rapid Transfer Alignment for Large and Time-Varying Attitude Misalignment Angles
IEEE Control Systems Letters, 2023 Transfer alignment is an effective method to estimate the attitude difference between two inertial platforms. Traditional transfer alignment methods are either meant for small misalignments or use nonlinear filtering. Linear methods for large misalignments use quaternion attitude representation, but their performance degrades when the misalignment is ...
Laetitia Tosoni +3 more
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Novel SINS Initial Alignment Method under Large Misalignment Angles and Uncertain Noise Based on Nonlinear Filter [PDF]
Mathematical Problems in Engineering, 2017 For the SINS initial alignment problem under large misalignment angles and uncertain noise, two novel nonlinear filters, referred to as transformed unscented quadrature Kalman filter (TUQKF) and robust transformed unscented quadrature Kalman filter (RTUQKF), are proposed in this paper, respectively.
Bo Yang +4 more
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A Method for SINS Alignment with Large Initial Misalignment Angles Based on Kalman Filter with Parameters Resetting [PDF]
Mathematical Problems in Engineering, 2014 In the initial alignment process of strapdown inertial navigation system (SINS), large initial misalignment angles always bring nonlinear problem, which causes alignment failure when the classical linear error model and standard Kalman filter are used.
Xixiang Liu +3 more
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An Improved Initial Alignment Method Based on SE2(3)/EKF for SINS/GNSS Integrated Navigation System with Large Misalignment Angles [PDF]
SensorsThis paper proposes an improved initial alignment method for a strap-down inertial navigation system/global navigation satellite system (SINS/GNSS) integrated navigation system with large misalignment angles. Its methodology is based on the three-dimensional special Euclidean group and extended Kalman filter (SE2(3)/EKF) and aims to overcome the ...
Jin Sun, Yuxin Chen, Bingbo Cui
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INITIAL ALIGNMENT OF FIBER-OPTIC INERTIAL NAVIGATION SYSTEM WITH LARGE MISALIGNMENT ANGLES BASED ON GENERALIZED PROPORTIONAL-INTEGRAL-DERIVATIVE FILTER [PDF]
, 2017 Initial alignment in the presence of large misalignment angles is a critical issue in strapdown inertial navigation systems. The large initial misalignment angle adversely affects the accuracy and rapidness of the alignment process. In this paper a novel
Mohammad Ali Rahgoshay +2 more
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