Results 51 to 60 of about 4,466,496 (420)

Single Object Tracking Research: A Survey [PDF]

arXiv, 2022
Visual object tracking is an important task in computer vision, which has many real-world applications, e.g., video surveillance, visual navigation. Visual object tracking also has many challenges, e.g., object occlusion and deformation. To solve above problems and track the target accurately and efficiently, many tracking algorithms have emerged in ...
arxiv  

Tracking Eudaimonia [PDF]

, 2018
A basic challenge to naturalistic moral realism is that, even if moral properties existed, there would be no way to naturalistically represent or track them.
Bloomfield, Paul
core   +2 more sources

A correction method of spin-stabilized satellites attitude control based on infrared benchmark

Dianzi Jishu Yingyong, 2019
Aiming at the problem that there is a large deviation of the spin-stabilized satellite using infrared benchmark for attitude controlling, the control theory of isoclinic angle is described firstly, the difference between the solar reference and infrared ...
Zhou Jinbiao, Li Yonggang, Guo Libing, Li Xiangming, Mao Wen   +4 more
doaj   +1 more source

Construction Progress and Aviation Flight Test of BDSBAS

Remote Sensing, 2022
As an important part of the BeiDou global navigation satellite system (BDS-3), the BeiDou satellite-based augmentation system (BDSBAS) aims to provide a high-integrity navigation service for users in China and its surrounding areas.
Weiguang Gao, Yueling Cao, Cheng Liu, Jun Lu, Bo Shao, Shuai Xiong, Chengeng Su   +6 more
doaj   +1 more source

Tracking Cougars

, 2022
Cougars make a living by not being seen. In areas disturbed by humans, these cats are most active at dusk and early in the morning. In low-light conditions, cougars see up to six times better than humans.
openaire   +1 more source

Performance Improvement for Single-Photon LiDAR with Dead Time Selection

International Journal of Aerospace Engineering, 2022
Compared with the impulse LiDAR, the single-photon LiDAR has higher measurement sensitivity in the prominent feature, especially for space-based long-distance imaging.
Lei Feng, Fenglin Wang, Meng An, Qiang Zhang   +3 more
doaj   +1 more source

The Channel Fading Influence of the Receiver Operating Characteristics of the TT&C Receiver Based on the Dual-Sequence Frequency Hopping

International Journal of Aerospace Engineering
Aimed at the antijamming needs of the space tracking, telemetry command (TT&C) receiver under a low signal-to-noise ratio, the anti-interference advantage of the dual-sequence frequency hopping (DSFH) communication system is applied.
Guangkai Liu, Jie Guo, Weizheng Xin, Cheng Cheng, Lu Wang   +4 more
doaj   +1 more source

Multiplexing modulation design optimization and quality evaluation of BDS-3 PPP service signal

Satellite Navigation, 2022
The Precise Point Positioning (PPP) service of BeiDou-3 Navigation Satellite System (BDS-3) is implemented on its Geostationary Earth Orbit (GEO) satellites.
Cheng Liu, Zheng Yao, Dun Wang, Weiguang Gao, Tianxiong Liu, Yongnan Rao, Dongjun Li, Chengeng Su   +7 more
doaj   +1 more source

The quality of school track assignment decisions by teachers [PDF]

arXiv, 2023
We study the quality of secondary school track assignment decisions in the Netherlands, using a regression discontinuity design. In 6th grade, primary school teachers assign each student to a secondary school track. If a student scores above a track-specific cutoff on the standardized end-of-primary education test, the teacher can upwardly revise this ...
arxiv  

Cloud tracking in cloud-resolving models [PDF]

, 2007
In recent years Cloud Resolving Models (CRMs) have become an increasingly important tool for the study of convective phenomena.
Plant, R. S.
core