Results 91 to 100 of about 895,042 (230)

Time Delay in Swiss Cheese Gravitational Lensing

, 2010
We compute time delays for gravitational lensing in a flat LambdaCDM Swiss cheese universe. We assume a primary and secondary pair of light rays are deflected by a single point mass condensation described by a Kottler metric (Schwarzschild with Lambda ...
Chen, Bin, Dai, Xinyu, Kantowski, Ronald
core   +1 more source

Sex differences in onset to hospital arrival time, prestroke disability, and clinical symptoms in patients with a large vessel occlusion: a MR CLEAN Registry substudy [PDF]

, 2022
Mariam Ali, Mariam Ali, Anne van der Meij, Hendrikus J. A. van Os, Mahsoem Ali, Mahsoem Ali, Erik W. van Zwet, Fianne Spaander, Jeanette Hofmeijer, Paul J. Nederkoorn, Ido R. van den Wijngaard, Charles B.L.M. Majoie, Adriaan C.G.M. van Es, Wouter J. Schonewille, Marianne A.A. van Walderveen, Diederik W.J. Dippel, Marieke C. Visser, Nyika D. Kruyt, Marieke J.H. Wermer   +18 more
openalex   +1 more source

The Time Difference of Arrival Estimation Method Utilizing an Inexact Reconstruction Within the Framework of Compressed Sensing

Remote Sensing
The time difference of arrival (TDOA) estimation plays a crucial role in emitter localization and time synchronization applications. When time among multiple sensors is synchronized, the TDOAs between the sensors and the emitter can be measured to ...
Shanhe Wang, Yu Xiang, Yuanyuan Gao, Yu Hua, Changjiang Huang, Xian Zhao   +5 more
doaj   +1 more source

On Arrival Time Difference Between Lensed Gravitational Waves and Light [PDF]

, 2020
Teruaki Suyama
openalex   +1 more source

A Sound Source Localization Method Based on Frequency Divider and Time Difference of Arrival [PDF]

, 2023
Jianchun Zhao, Guangyue Zhang, Jierui Qu, Jiayi Chen, Shuang Liang, Kaiqiang Wei, Guan Wang   +6 more
openalex   +1 more source

Improving the Performance of OTDOA based Positioning in NB-IoT Systems

, 2017
In this paper, we consider positioning with observed-time-difference-of-arrival (OTDOA) for a device deployed in long-term-evolution (LTE) based narrow-band Internet-of-things (NB-IoT) systems.
Berg, Axel, Hu, Sha, Li, Xuhong, Rusek, Fredrik   +3 more
core   +1 more source

Improving the Robustness of Time Difference of Arrival Estimation Based on the Energy Center of Gravity Rearrangement. [PDF]

Sensors (Basel), 2023
Zhang P, Wen H, Xu Z, Zhao Z.
europepmc   +1 more source

Positioning Accuracy Evaluation of Radio Emission Sources Using Time Difference of Arrival and Angle of Arrival Methods. Part 3. 3D-Simulation [PDF]

, 2020
Grigoriy Fokin, Vitaly Lazarev
openalex   +1 more source

High-Precision Time Difference of Arrival Estimation Method Based on Phase Measurement

Remote Sensing
In unmanned aerial vehicle (UAV)-based time difference of arrival (TDOA) positioning technique, baselines are limited due to communication constraints. In this case, the accuracy is highly sensitive to the TDOA measurements’ error. This article primarily
Jihao Xin, Xuyang Ge, Yuan Zhang, Xingdong Liang, Hang Li, Linghao Wu, Jiashuo Wei, Xiangxi Bu   +7 more
doaj   +1 more source

Disturbance Source Location in Power Systems Based on Time Difference of Arrival

Zhongguo dianli, 2019
The system frequency dynamics in large-scale interconnected power grids are characterized by spatial-temporal distribution, and its propagation speed is far less than the light speed.
Mengxi WEI, Ningning MA, Delin WANG, Wei DENG, Jitao KANG   +4 more
doaj   +1 more source