Results 31 to 40 of about 22,327 (306)

Georeferencing experiments with UAS imagery [PDF]

open access: yesISPRS 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

open access: yesSensors, 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

open access: yesSensors, 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

Application and Prospect of Strapdown Inertial Navigation System in Coal Mining Equipment. [PDF]

open access: yesSensors (Basel)
In recent years, with the rapid construction of a safe, clean, efficient and sustainable modern energy system, the intelligence of coal mining has become the inevitable direction of the development of the coal mining industry.
Liang M, Zheng D, Li K, Fang X, Wu G.
europepmc   +2 more sources

FOG Random Drift Signal Denoising Based on the Improved AR Model and Modified Sage-Husa Adaptive Kalman Filter

open access: yesSensors, 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

Inertial navigation for divers [PDF]

open access: yes, 2021
The Study Group investigated the possibility of a small standalone dead-reckoning system making use of cheaply available accelerometer, gyroscope and magnetic field sensors. The Study Group captured data using an Android device strapped to a skateboard to simulate the type of movements a diver might make underwater.
Lorcán Mac Manus, Melvin Brown
openaire   +1 more source

An Ultra-Short Baseline Positioning Model Based on Rotating Array & Reusing Elements and Its Error Analysis

open access: yesSensors, 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

Initial Alignment of Large Azimuth Misalignment Angles in SINS Based on Adaptive UPF

open access: yesSensors, 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

Structural Optimization and MEMS Implementation of the NV Center Phonon Piezoelectric Device

open access: yesMicromachines, 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

open access: yesFEBS 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

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