Results 171 to 180 of about 1,576,591 (388)

Animation on a satellite graphics system [PDF]

, 1976
Richard M. Sowar
openalex   +1 more source

A phased array tracking antenna for vehicles [PDF]

An antenna system including antenna elements and a satellite tracking method is considered a key technology in implementing land mobile satellite communications.
Mano, Kazukiko, Matsunaga, Makoto, Ohmori, Shingo, Tanaka, Kenji, Tsuchiya, Makio   +4 more
core   +1 more source

Antenna Beam Coverage Concepts [PDF]

, 1990
The strawman Personal Access Satellite System (PASS) design calls for the use of a CONUS beam for transmission between the supplier and the satellite and for fixed beams for transmission between the basic personal terminal and the satellite.
Estabrook, Polly, Motamedi, Masoud
core   +1 more source

Highly Off‐Centering Cations in Pavonite‐Structured Ag1.75InSb5.75Se11 with Competitive Thermoelectric Performance

Advanced Functional Materials, EarlyView.
Off‐centering of cations in pavonite‐structured Ag1.75InSb5.75Se11 (AISS) breaks crystal symmetry, inducing Rashba‐like band splitting and high band degeneracy, thus enhancing Seebeck coefficients. Soft bonds between off‐centered cations and Se atoms increase phonon scattering, achieving low lattice thermal conductivity (0.22 W m−1K−1 at 723 K). Doping
Chenghao Xie, Rongcheng Li, Weibin Xu, Bowen Jin, Xiao‐Lei Shi, Xinfeng Tang, Gangjian Tan, Zhi‐Gang Chen   +7 more
wiley   +1 more source

The Relationship between Accelerometry, Global Navigation Satellite System, and Known Distance: A Correlational Design Study. [PDF]

Sensors (Basel), 2022
Bursais AK, Bazyler CD, Dotterweich AR, Sayers AL, Alibrahim MS, Alnuaim AA, Alhumaid MM, Alaqil AI, Alshuwaier GO, Gentles JA.   +9 more
europepmc   +1 more source

Elucidating Sodium Ion Storage Mechanisms in Hard Carbon Anodes at the Electronic Level

Advanced Functional Materials, EarlyView.
High‐resolution, multi‐frequency continuous wave, and pulsed Electron Paramagnetic Resonance (EPR) spectroscopy uncover the intricate Na ion storage mechanisms in hard carbon. This study reveals the coexistence of Na ion intercalation and solvent co‐intercalation, alongside a subsequent transition of Na ions from ionic to quasi‐metallic to metallic ...
Qingbing Xia, Cheng‐Lin Ko, Emily R. Cooper, Qinfen Gu, Ruth Knibbe, Jeffrey R. Harmer   +5 more
wiley   +1 more source

Globally Optimal Relative Pose and Scale Estimation from Only Image Correspondences with Known Vertical Direction

ISPRS International Journal of Geo-Information
Installing multi-camera systems and inertial measurement units (IMUs) in self-driving cars, micro aerial vehicles, and robots is becoming increasingly common.
Zhenbao Yu, Shirong Ye, Changwei Liu, Ronghe Jin, Pengfei Xia, Kang Yan   +5 more
doaj   +1 more source

Assessing the agreement between a global navigation satellite system and an optical-tracking system for measuring total, high-speed running, and sprint distances in official soccer matches. [PDF]

Sci Prog, 2023
Makar P, Silva AF, Oliveira R, Janusiak M, Parus P, Smoter M, Clemente FM.   +6 more
europepmc   +1 more source

Tin‐Based 2D/3D Perovskite Vertical Heterojunction for High‐Performance Synaptic Phototransistors

Advanced Functional Materials, EarlyView.
Phototransistors based on tin‐based 2D/3D perovskite heterostructures show an ultrahigh responsivity and detectivity at a low gate voltage across a broad wavelength region from ultraviolet to near‐infrared. The devices can replicate neuromorphic learning and remembering behaviors to light stimuli, in addition to electric depression and memory erasure ...
Hok‐Leung Loi, Tianyue Wang, Dapeng Liu, Jiupeng Cao, Jing Zhuang, Zeyu Zhao, Yang Xu, Mitch Guijun Li, Liang Li, Tianyou Zhai, Feng Yan   +10 more
wiley   +1 more source

Global Navigation Satellite System Real-Time Kinematic Positioning Framework for Precise Operation of a Swarm of Moving Vehicles. [PDF]

Sensors (Basel), 2022
Kim E, Kim SK.
europepmc   +1 more source