Results 21 to 30 of about 11,185 (262)
An Adaptive Damping Network Designed for Strapdown Fiber Optic Gyrocompass System for Ships
Sensors, 2017 The strapdown fiber optic gyrocompass (strapdown FOGC) system for ships primarily works on external horizontal damping and undamping statuses. When there are large sea condition changes, the system will switch frequently between the external horizontal ...
Jin Sun +5 more
doaj +1 more source
Georeferencing experiments with UAS imagery [PDF]
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2014 Comparing typical airborne mapping systems with Unmanned Airborne Systems (UAS) developed for mapping purposes, there are several advantages and disadvantages of both systems.
G. Jóźków, C. Toth
doaj +1 more source
A Self-Alignment Algorithm for SINS Based on Gravitational Apparent Motion and Sensor Data Denoising
Sensors, 2015 Initial alignment is always a key topic and difficult to achieve in an inertial navigation system (INS). In this paper a novel self-initial alignment algorithm is proposed using gravitational apparent motion vectors at three different moments and vector ...
Yiting Liu +5 more
doaj +1 more source
A Novel Artificial Fish Swarm Algorithm for Recalibration of Fiber Optic Gyroscope Error Parameters
Sensors, 2015 The artificial fish swarm algorithm (AFSA) is one of the state-of-the-art swarm intelligent techniques, which is widely utilized for optimization purposes. Fiber optic gyroscope (FOG) error parameters such as scale factors, biases and misalignment errors
Yanbin Gao +3 more
doaj +1 more source
Journal of Navigation, 1977 The following letter to Nature, dated 24 April 1873, might make an appropriate sequel to ‘The history of inertial navigation’ by W. Wrigley in the January issue of the Journal. As well as containing some interesting speculation about animal navigation, which we seem no nearer resolving a century later, the letter includes an introduction to the idea of
openaire +1 more source
Sensors, 2016 In order to reduce the influence of fiber optic gyroscope (FOG) random drift error on inertial navigation systems, an improved auto regressive (AR) model is put forward in this paper.
Jin Sun +4 more
doaj +1 more source
Initial Alignment of Large Azimuth Misalignment Angles in SINS Based on Adaptive UPF
Sensors, 2015 The case of large azimuth misalignment angles in a strapdown inertial navigation system (SINS) is analyzed, and a method of using the adaptive UPF for the initial alignment is proposed. The filter is based on the idea of a strong tracking filter; through
Jin Sun +4 more
doaj +1 more source
Sensors, 2019 The USBL (Ultra-Short Base Line) positioning system is widely used in underwater acoustic positioning systems due to its small size and ease of use. The traditional USBL positioning system is based on ‘slant range and azimuth’.
Jinwu Tong +5 more
doaj +1 more source
Structural Optimization and MEMS Implementation of the NV Center Phonon Piezoelectric Device
Micromachines, 2022 The nitrogen-vacancy (NV) center of the diamond has attracted widespread attention because of its high sensitivity in quantum precision measurement.
Xiang Shen, Liye Zhao, Fei Ge
doaj +1 more source
Directed evolution of enzymes at the crossroads of tradition and innovation
FEBS Open Bio, EarlyView.An iterative cycle of data‐driven enzyme optimization comprising four stages: genetic diversification of a template enzyme, expression of protein variants, high‐throughput evaluation, and machine‐learning‐guided redesign of the next variant library.
Maria Tomkova +2 more
wiley +1 more source