Results 21 to 30 of about 21,744 (166)

An Aeromagnetic Compensation Method Based on a Multimodel for Mitigating Multicollinearity

Sensors, 2019
Aeromagnetic surveys play an important role in geophysical exploration and many other fields. In many applications, magnetometers are installed aboard an aircraft to survey large areas.
Guanyi Zhao, Qi Han, Xiang Peng, Pengyi Zou, Haidong Wang, Changping Du, He Wang, Xiaojun Tong, Qiong Li, Hong Guo   +9 more
doaj   +1 more source

Metrological Validation of Pixhawk Autopilot Magnetometers in Helmholtz Cage

World Electric Vehicle Journal, 2022
The use of drones is very extended for multiple applications. Some of them impose attitude and navigation requirements that need appropriate measurements.
Noelia Fariñas-Álvarez, Fermín Navarro-Medina, Higinio González-Jorge   +2 more
doaj   +1 more source

Automatic Determination of Validity of Input Data Used in Ellipsoid Fitting MARG Calibration Algorithms

Sensors, 2013
Ellipsoid fitting algorithms are widely used to calibrate Magnetic Angular Rate and Gravity (MARG) sensors. These algorithms are based on the minimization of an error function that optimizes the parameters of a mathematical sensor model that is ...
Javier Ramirez, Juan Manuel Górriz, Gonzalo Olivares, Alberto Olivares, Gonzalo Ruiz-Garcia   +4 more
doaj   +1 more source

Diagnostic Accuracy of Magnetometer-Guided Sentinel Lymphadenectomy After Intraprostatic Injection of Superparamagnetic Iron Oxide Nanoparticles in Intermediate- and High-Risk Prostate Cancer Using the Magnetic Activity of Sentinel Nodes

Frontiers in Pharmacology, 2019
Due to the high morbidity of extended lymph node dissection (eLND) and the low detection rate of limited lymph node dissection (LND), targeted sentinel lymph node dissection (sLND) was implemented in prostate cancer (PCa).
Wiebke Geißen, Svenja Engels, Paula Aust, Jonas Schiffmann, Holger Gerullis, Friedhelm Wawroschek, Alexander Winter   +6 more
doaj   +1 more source

Equivalent Noise Analysis and Modeling for a Magnetic Tunnel Junction Magnetometer with In Situ Magnetic Feedback

Magnetochemistry, 2023
Magnetic tunnel junction (MTJ) sensors have been one of the excellent candidates for magnetic field detection due to their high sensitivity and compact size.
Aiyu Dou, Ru Bai, Yucheng Sun, Jiakun Tu, Chuanjia Kou, Xin Xie, Zhenghong Qian   +6 more
doaj   +1 more source

Real-Time Single-Frequency GPS/MEMS-IMU Attitude Determination of Lightweight UAVs

Sensors, 2015
In this paper, a newly-developed direct georeferencing system for the guidance, navigation and control of lightweight unmanned aerial vehicles (UAVs), having a weight limit of 5 kg and a size limit of 1.5 m, and for UAV-based surveying and remote sensing
Christian Eling, Lasse Klingbeil, Heiner Kuhlmann   +2 more
doaj   +1 more source

Automatic Detection of Magnetic Disturbances in Magnetic Inertial Measurement Unit Sensors Based on Recurrent Neural Networks

Sensors, 2023
This paper proposes a new methodology for the automatic detection of magnetic disturbances from magnetic inertial measurement unit (MIMU) sensors based on deep learning.
Elkyn Alexander Belalcazar-Bolaños, Diego Torricelli, José L. Pons   +2 more
doaj   +1 more source

Glass Microbubble Encapsulation for Improving the Lifetime of a Ferrofluid-Based Magnetometer

Micromachines
In this paper, we explore the use of chip-scale blown glass microbubble structures for MEMS packaging applications. Specifically, we demonstrate the efficacy of this method of packaging for the improvement of the lifetime of a ferrofluid-based ...
Chenchen Zhang, Srinivas Tadigadapa
doaj   +1 more source

Measurements of the Magnetic Field Variations Related with the Size of V-Shaped Notches in Steel Pipes

Applied Sciences, 2021
Gas and oil pipeline networks require periodic inspections to detect cracks or notches that can cause industrial accidents and environmental contamination.
J. Jesús Villegas-Saucillo, José Javier Díaz-Carmona, Marco A. Escarola-Rosas, Héctor Vázquez-Leal, Jaime Martínez-Castillo, Agustín L. Herrera-May   +5 more
doaj   +1 more source

Advances in SQUID magnetometers [PDF]

IEEE Transactions on Electron Devices, 1980
The operation and noise limitations of de and RF SQUID's are outlined, and recent advances in their sensitivity are discussed. A model of the dc SQUID predicts an energy noise level per hertz referred to the SQUID of approximately 8 k_{B}TL/R \approx 8 k_{B}T(\piLC)^{1/2} , where L, R, and C are the SQUID inductance and the shunt resistance and ...
openaire   +2 more sources