Results 11 to 20 of about 853,099 (338)

Comparison among Hamiltonian light-front formalisms at q+ = 0 and q+ <> 0: space-like elastic form factors of pseudoscalar and vector mesons [PDF]

open access: yes, 2002
The electromagnetic elastic form factors of pseudoscalar and vector mesons are analyzed for space-like momentum transfers in terms of relativistic quark models based on the Hamiltonian light-front formalism elaborated in different reference frames (q+ 0 ...
B.D. Keister   +37 more
core   +4 more sources

Universal Vector Calibration for Orientation-Invariant 3D Sensor Data [PDF]

open access: yesSensors
Modern electronic devices such as smartphones, wearable devices, and robots typically integrate three-dimensional sensors to track the device’s movement in the 3D space.
Wonjoon Son, Lynn Choi
doaj   +2 more sources

IMAGE ORIENTATION BY EMBEDDING IN A GAN LATENT SPACE [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022
Estimation of an image exterior orientation is required in multiple tasks including 3D reconstruction, autonomous driving and navigation, and single-photo 3D reconstruction. The problem can be easily solved if some reference points (keypoints) with known
V. V. Kniaz   +8 more
doaj   +1 more source

Theory and application of the vector pair correlation function for real-space crystallographic analysis of order/disorder correlations from STEM images

open access: yesAPL Materials, 2021
Deviations of local structure and chemistry from the average crystalline unit cell are increasingly recognized to have a significant influence on the properties of many technologically important materials.
Stephen D. Funni   +5 more
semanticscholar   +1 more source

Low-Cost Orientation Determination System for CubeSat Based Solely on Solar and Magnetic Sensors

open access: yesSensors, 2023
CubeSats require accurate determination of their orientation relative to the Sun, Earth, and other celestial bodies to operate successfully and collect scientific data.
Yerkebulan Nurgizat   +4 more
doaj   +1 more source

Field-Oriented Control of Five-Phase Induction Motor Fed From Space Vector Modulated Matrix Converter [PDF]

open access: yesIEEE Access, 2022
This paper presents the field-oriented control (FOC) of a five-phase induction motor (FPIM) fed from a three-to-five phase direct matrix converter (DMC). The article focuses on the modulation and control of the three-to-five phase DMC, which discusses minimizing the problems associated with switching vector selection, sector identification, switching ...
Khaliqur Rahman   +6 more
openaire   +4 more sources

Velocity Vector Estimation of Two-Dimensional Flow Field Based on STIV

open access: yesItalian National Conference on Sensors, 2023
As an important part of hydrometry, river discharge monitoring plays an irreplaceable role in the planning and management of water resources and is an essential element and necessary means of river management.
J. Lu, Xiaohong Yang, Jianping Wang
semanticscholar   +1 more source

ORIENTATION MODELING FOR AMATEUR CAMERAS BY MATCHING IMAGE LINE FEATURES AND BUILDING VECTOR DATA [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
With the popularity of geospatial applications, database updating is getting important due to the environmental changes over time. Imagery provides a lower cost and efficient way to update the database.
C. H. Hung, W. C. Chang, L. C. Chen
doaj   +1 more source

Method of preliminary solution of the problem of space robot navigation by onboard astronomical measurements using the butterworth filter

open access: yesВестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2020
A method of preliminary solution of the problem of space robot navigation based on the results of measurements carried out using its onboard optronic equipment is presented.
V. M. Ananenko   +2 more
doaj   +1 more source

Design and Implementation of a 3-Dimensional Attitudes Estimator Device using Low Cost Accelerometer & Gyroscope with Microcontroller IDE [PDF]

open access: yesINCAS Bulletin, 2020
Navigation and guidance systems for most automobile as well as aerospace applications require a coupled chip setup known as Inertial Measurement Units (IMU) which, depending on the degree of freedoms, contains a Gyroscope (for maintaining orientation and
M. RAJA, Ugur GUVEN, Kartikay SINGH
doaj   +1 more source

Home - About - Disclaimer - Privacy