Results 11 to 20 of about 91,384 (299)

Impact of Vestibular Stimulation at Powerline Frequency on Human Pointing Accuracy

IEEE Access, 2022
Background: Electric vestibular stimulations (EVS) up to 300 Hz trigger vestibular myogenic responses. Interestingly, 300 Hz is the upper limit of the so called extremely low-frequency magnetic fields (ELF-MF) range found within the 2010 guidelines ...
Nicolas Bouisset, Andres Carvallo, Perrine Dumur, Sofiane Ramdani, Alexandre Legros   +4 more
doaj   +2 more sources

A Conceptual Investigation of a Large Radio Telescope Support Point Number Effect on Its Pointing Accuracy

International Journal of Antennas and Propagation, 2020
The purpose of this paper is to investigate a large radio telescope support point number effect on its pointing accuracy and provide a useful guideline for the large radio telescope design engineer. In a large radio telescope system, the azimuth track is
Song Xue, Kaitong Ma, Congsi Wang, Peiyuan Lian, Yan Wang, Yuefei Yan, Qian Xu, Yuanpeng Zheng, Na Wang   +8 more
doaj   +2 more sources

Improvement of the Pointing Accuracy of Shipborne Optical Measuring Equipment Based on a Subdivision Iteration Algorithm

IEEE Access
When performing measurement and control tasks at sea, the optical measuring equipment on an aerospace survey ship must demonstrate a high pointing accuracy.
Xin Huang, Jing Wang, Dong Wang, Jiahao Peng, Bao Zhao   +4 more
doaj   +2 more sources

High Accuracy Pointing for Quasi-optical THz Mixer Arrays [PDF]

, 2022
We report a high accuracy pointing technique for quasi-optical hot electron bolometer (HEB) mixers in focal-plane arrays designed to operate at 1.4, 1.9, and 4.7 THz.
Kulesa, Craig, Van der Tak, Floris (author), Laauwen, Wouter (author), Westerweld, Menno (author), Laauwen, Wouter; id_orcid, Walker, Christopher (author), Gao, Jian Rong, Gasparsilva, Jose Rui, Young, Abram (author), Finkel, Matvey, Van der Tak, Floris, More, Nikhil (author), Gasparsilva, Jose Rui (author), Finkel, M. (author), Kulesa, Craig (author), Laauwen, Wouter, Gao, J.R. (author), Westerweld, Menno, Young, Abram, More, Nikhil, Walker, Christopher   +20 more
core   +1 more source

A Separate Calibration Method of Laser Pointing and Ranging for the GF-7 Satellite Laser That Does Not Require Field Detectors

Remote Sensing, 2022
Satellite laser altimeters have been widely used in the surveying, mapping, forestry, and polar regions and by other industries due to their excellent elevation measurement accuracy.
Ren Liu, Junfeng Xie, Chaopeng Xu, Junze Zeng, Fan Mo, Xiaomeng Yang   +5 more
doaj   +1 more source

Rotating Lorentz Force Magnetic Bearings’ Dynamics Modeling and Adaptive Controller Design

Sensors, 2023
To address the issues of our agile satellites’ poor attitude maneuverability, low pointing stability, and pointing inaccuracy, this paper proposes a new type of stabilized platform based on seven-degree-of-freedom Lorentz force magnetic levitation ...
Feiyu Chen, Weijie Wang, Shengjun Wang
doaj   +1 more source

Modeling and Correction of Pointing Errors in Gimbals-Type Optical Communication Terminals on Motion Platforms

IEEE Photonics Journal, 2021
In free-space optical (FSO) communication, high-precision pointing is a critical technology required for rapid acquisition to reduce link establishment time and increase communication time.
Chao Peng, Dong He, Yuankang Wang, Yongmei Huang, Xiang Liu, Liangzhu Yuan, Yangjie Xu, Jiaming Lei, Haotong Ma   +8 more
doaj   +1 more source

On the accuracy of point localisation in a circular camera-array [PDF]

2015 IEEE International Conference on Image Processing (ICIP), 2015
Although many advances have been made in light-field and camera-array image processing, there is still a lack of thorough analysis of the localisation accuracy of different multi-camera systems. By considering the problem from a frame-quantisation perspective, we are able to quantify the point localisation error of circular camera configurations ...
Alireza Ghasemi, Adam Scholefield, Martin Vetterli   +2 more
openaire   +2 more sources

Development of an Eye-Gaze Input System With High Speed and Accuracy through Target Prediction Based on Homing Eye Movements

IEEE Access, 2021
In this study, a method to predict a target on the basis of the trajectory of eye movements and to increase the pointing speed while maintaining high predictive accuracy is proposed.
Atsuo Murata, Toshihisa Doi, Kazushi Kageyama, Waldemar Karwowski   +3 more
doaj   +1 more source

A comparison of feedback cues for enhancing pointing efficiency in interaction with spatial audio displays [PDF]

, 2005
An empirical study that compared six different feedback cue types to enhance pointing efficiency in deictic spatial audio displays is presented. Participants were asked to select a sound using a physical pointing gesture, with the help of a loudness cue,
Brewster, S.A., Marentakis, G., Stephen A. Brewster, Georgios Marentakis   +3 more
core   +1 more source