Results 31 to 40 of about 14,844 (251)

A Method for Gravitational Apparent Acceleration Identification and Accelerometer Bias Estimation

IEEE Access, 2019
Accelerometer bias in an inertial navigation system (INS) is the key factor determining the navigation accuracy. Two methods, named separated calibration and system calibration are always used for acceleration bias calibration.
Xixiang Liu, Songbing Wang, Xiaole Guo, Wenqiang Yang, Guangfu Xu   +4 more
doaj   +1 more source

Non-invasive computer-assisted measurement of knee alignment

, 2011
The quantification of knee alignment is a routine part of orthopaedic practice and is important for monitoring disease progression, planning interventional strategies, and follow-up of patients.
Philip E. Riches, Angela H. Deakin, Deakin, Angela H, Riches, Philip E, Frederic Picard, Clarke, Jon V, Jon V. Clarke, Picard, Frederic   +7 more
core   +1 more source

A Vision Aided Initial Alignment Method of Strapdown Inertial Navigation Systems in Polar Regions

, 2022
The failure of the traditional initial alignment algorithm for the strapdown inertial navigation system (SINS) in high latitude is a significant challenge due to the rapid convergence of polar longitude.
Song, Wenbo, Fubin Zhang, Gao, Xiaohua, Wenbo Song, Zhang, Fubin, Xiaohua Gao   +5 more
core   +1 more source

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, Fereidoon Shabaninia, Paknoosh Karimaghaie   +2 more
core   +2 more sources

An Optimization-Based Initial Alignment and Calibration Algorithm of Land-Vehicle SINS In-Motion

Sensors, 2018
For a running freely land-vehicle strapdown inertial navigation system (SINS), the problems of self-calibration and attitude alignment need to be solved simultaneously.
Kang Gao, Shunqing Ren, Xijun Chen, Zhenhuan Wang   +3 more
doaj   +1 more source

Benchmarking tools for the alignment of functional noncoding DNA

, 2004
Pollard DA, Bergman CM, Stoye J, Celniker SE, Eisen MB. Benchmarking tools for the alignment of functional noncoding DNA. BMC Bioinformatics. 2004;5(1): 6.Background: Numerous tools have been developed to align genomic sequences.
Celniker SE, Eisen MB, MB Eisen, Stoye J, Bergman CM, Celniker, Susan E., Bergman, Casey M., SE Celniker, Pollard, Daniel A., Pollard DA, CM Bergman, Eisen, Michael B., J Stoye, Stoye, Jens, Stoye, Jens ; https://orcid.org/, DA Pollard   +15 more
core   +1 more source

Multi-Position Inertial Alignment Method for Underground Pipelines Using Data Backtracking Based on Single-Axis FOG/MIMU

Micromachines
The inertial measurement method of pipelines utilizes a Micro-Electro-Mechanical Systems Inertial Measurement Unit (MIMU) to get the three-dimensional trajectory of underground pipelines.
Jiachen Liu, Lu Wang, Yutong Zu, Yuanbiao Hu   +3 more
doaj   +1 more source

Analysis of Gravity Disturbance Compensation for Initial Alignment of INS

IEEE Access, 2020
To address the accuracy requirements of initial alignment of high-precision inertial navigation systems (INSs), gravity disturbance compensation for INSs based on a spherical harmonic model is investigated herein.
Shiwen Hao, Zhaofa Zhou, Zhili Zhang, Zhenjun Chang, Xianyi Liu   +4 more
doaj   +1 more source

Vision-based initial point alignment control for the wheel hubs in the robotic polishing system

, 2020
In the robotic polishing system for the wheel hubs, initial point alignment is a very important procedure before the robot starts to polish. Since the surface shapes of the wheel hubs are complex, traditional contact sensors are not suitable for the ...
Li, Junjie, Zhang, Chi, Yang, Guilin, Fang, Zaojun   +3 more
core   +1 more source

Health‐Related Quality of Life and Symptom Severity Among Patients With PIK3CA‐Related Overgrowth Spectrum: A Mixed‐Methods Study to Understand Real‐World Experience With Alpelisib Treatment

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background PIK3CA‐related overgrowth spectrum (PROS) includes several rare overgrowth disorders resulting from somatic gain‐of‐function mutations in PIK3CA. Despite treatment advances, including the recent approval of alpelisib for PROS in the United States, literature detailing the patient experience with PROS is limited.
Vamsi Bollu, Kaitlin LaGasse, Cory D. Saucier, Kimberly Raymond, Miranda Lauher‐Charest, Lauren Crowder, Beilei Cai, Mary Lisha Paul, Denise Adams   +8 more
wiley   +1 more source