Anti-swaying self-alignment method based on observation vector inertia for SINS under latitude uncertainty

Measurement ◽  
2021 ◽  
pp. 109250
Author(s):  
Hongliang Zhang ◽  
Yilan Zhou ◽  
Tengchao Huang ◽  
Lei Wang
Keyword(s):  
Alignment Method ◽  
Observation Vector

A Fuzzy Robust Filtering Method for Transfer Alignment

2013 ◽  
Vol 411-414 ◽  
pp. 907-911
Author(s):  
She Sheng Gao ◽  
Yan Zhao ◽  
Wen Hui Wei
Keyword(s):  
Navigation System ◽  
Inertial Navigation System ◽  
Covariance Matrices ◽  
Robust Filtering ◽  
Alignment Method ◽  
Transfer Alignment ◽  
Filtering Method ◽  
Random Weight ◽  
Weight Method ◽  
Observation Vector

This paper presents a fuzzy anti-interference transfer alignment method for airborne strapdown inertial navigation system (SINS). This fuzzy anti-interference transfer alignment method takes the influence of systematic error into account for SINS transfer alignment. The fuzzy rules are constructed and incorporated in the filtering process to estimate the covariance matrices of observation vector and predicted state vector with random weight method. The experimental results demonstrate that the proposed method can resist the interferences caused by the airborne maneuvering process, thus improving the accuracy for SINS transfer alignment.

scholarly journals Research on initial alignment method of vehicle-mounted SINS based on reverse navigation

2021 ◽  
Vol 1846 (1) ◽  
pp. 012075
Author(s):  
Chen Yang ◽  
Yuanwen Cai ◽  
Chaojun Xin ◽  
Meiling Shi
Keyword(s):  
Alignment Method ◽  
Initial Alignment

scholarly journals Reference flow: reducing reference bias using multiple population genomes

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Nae-Chyun Chen ◽  
Brad Solomon ◽  
Taher Mun ◽  
Sheila Iyer ◽  
Ben Langmead
Keyword(s):  
Genetic Variation ◽  
Reference Genome ◽  
Alignment Method ◽  
Sequencing Data ◽  
Computational Overhead ◽  
Reference Flow ◽  
Multiple Population ◽  
Reference Bias ◽  
Flow Alignment ◽  
Reference Genomes

AbstractMost sequencing data analyses start by aligning sequencing reads to a linear reference genome, but failure to account for genetic variation leads to reference bias and confounding of results downstream. Other approaches replace the linear reference with structures like graphs that can include genetic variation, incurring major computational overhead. We propose the reference flow alignment method that uses multiple population reference genomes to improve alignment accuracy and reduce reference bias. Compared to the graph aligner vg, reference flow achieves a similar level of accuracy and bias avoidance but with 14% of the memory footprint and 5.5 times the speed.

An Improved Initial Alignment Method of Strap-Down Inertial Navigation System on a Swaying Base

2013 ◽  
Vol 415 ◽  
pp. 143-148
Author(s):  
Li Hua Zhu ◽  
Xiang Hong Cheng
Keyword(s):  
Navigation System ◽  
Inertial Navigation System ◽  
Alignment Algorithm ◽  
Alignment Method ◽  
Initial Alignment ◽  
Vehicle Simulation ◽  
Robust Property ◽  
Simulation Results ◽  
Lever Arm Effect ◽  
The Impact

The design of an improved alignment method of SINS on a swaying base is presented in this paper. FIR filter is taken to decrease the impact caused by the lever arm effect. And the system also encompasses the online estimation of gyroscopes’ drift with Kalman filter in order to do the compensation, and the inertial freezing alignment algorithm which helps to resolve the attitude matrix with respect to its fast and robust property to provide the mathematical platform for the vehicle. Simulation results show that the proposed method is efficient for the initial alignment of the swaying base navigation system.

scholarly journals Improvement of knowledge-based automatic slice-alignment method for cardiac magnetic resonance imaging

2012 ◽  
Vol 14 (S1) ◽  
Author(s):  
Shuhei Nitta ◽  
Tomoyuki Takeguchi ◽  
Nobuyuki Matsumoto ◽  
Shigehide Kuhara ◽  
Kenichi Yokoyama ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Cardiac Magnetic Resonance ◽  
Magnetic Resonance ◽  
Cardiac Magnetic Resonance Imaging ◽  
Alignment Method ◽  
Resonance Imaging ◽  
Knowledge Based

Novel Alignment Method of Small Molecules Using the Hopfield Neural Network

2003 ◽  
Vol 43 (5) ◽  
pp. 1390-1395 ◽  
Author(s):  
Masamoto Arakawa ◽  
Kiyoshi Hasegawa ◽  
Kimito Funatsu
Keyword(s):  
Neural Network ◽  
Small Molecules ◽  
Hopfield Neural Network ◽  
Alignment Method
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