Results 1 to 10 of about 379,651 (268)

Design of a Differential Low-Noise Amplifier Using the JFET IF3602 to Improve TEM Receiver

open access: yesMicromachines, 2022
The observed data of transient electromagnetic (TEM) systems is often contaminated by various noises. Even after stacking averages or applying various denoising algorithms, the interference of the system noise floor cannot be eliminated fundamentally ...
Shengjie Wang   +5 more
doaj   +1 more source

Mathematical Analysis and Micro-Spacing Implementation of Acoustic Sensor Based on Bio-Inspired Intermembrane Bridge Structure

open access: yesSensors, 2021
A biomimetic study on the auditory localization mechanism of Ormia ochracea was performed to improve the localization ability of small acoustic systems.
Xiang Shen   +3 more
doaj   +1 more source

H∞ filter for flexure deformation and lever arm effect compensation in M/S INS integration

open access: yesInternational Journal of Naval Architecture and Ocean Engineering, 2014
On ship, especially on large ship, the flexure deformation between Master (M)/Slave (S) Inertial Navigation System (INS) is a key factor which determines the accuracy of the integrated system of M/S INS.
Liu Xixiang   +4 more
doaj   +3 more sources

Recent progress in dielectric/metal/dielectric electrodes for foldable light-emitting devices

open access: yesNanotechnology Reviews, 2023
Flexible optoelectronic devices have a broad application prospect in the field of wearable electronic devices, among which the superior transparent electrode is the core problem in achieving high-performance flexible optoelectronic devices.
Zhang Buqi   +4 more
doaj   +1 more source

Real-Time Terrain-Following of an Autonomous Quadrotor by Multi-Sensor Fusion and Control

open access: yesApplied Sciences, 2021
For the application of the autonomous guidance of a quadrotor from confined undulant ground, terrain-following is the major issue for flying at a low altitude.
Yuan Yang   +5 more
doaj   +1 more source

Trajectory Tracking of UAVs Using Sigmoid Tracking Differentiator and Variable Gain Finite-Time Extended State Observer

open access: yesDrones, 2022
The problem of quadrotor attitude and position control is considered in the presence of generally lumped disturbances: external disturbances and model uncertainty.
Wenxing Zhu   +3 more
doaj   +1 more source

Visual measurement method of crop height based on color feature in harvesting robot

open access: yesSN Applied Sciences, 2023
Article Highlights (1) A crops height measurement model was established based on aperture image principle, and then segmentation lines extraction of crops and background was implemented by a series of morphological operations.
Shanqin Wang   +3 more
doaj   +1 more source

An Adaptive Damping Network Designed for Strapdown Fiber Optic Gyrocompass System for Ships

open access: yesSensors, 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

Instrumental in education and information

open access: yesThe Bulletin of the Royal College of Surgeons of England, 2022
The Library team give us an overview of the all–new Library and the services available to fellows, members and all RCS England staff.
openaire   +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

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