Results 31 to 40 of about 4,057,878 (286)

A Lightweight Satellite Orbit Anomaly Detection Method Based on Peak-AAE and Its Edge Deployment

Aerospace
The detection of orbital anomalies is of critical importance to the safe operation of on-orbit spacecraft. Existing methods often rely on manually engineered features and are constrained by the limited computational resources of satellite equipment. This
Yang Guo, Xiaolong Yue, Boyang Wang, Bingchuan Li   +3 more
doaj   +1 more source

The fast debris evolution model [PDF]

, 2008
The ‘Particles-in-a-box’ (PIB) model introduced by Talent (1992) removed the need for computer-intensive Monte Carlo simulation to predict the gross characteristics of an evolving debris environment.
G.G. Swinerd, R.J. Newland, Lewis, H.G., Newland, R.J., Swinerd, G.G., H.G. Lewis, Saunders, A., A. Saunders   +7 more
core   +1 more source

Golgi enzymes are retrieved from the plasma membrane to the trans‐Golgi network

FEBS Letters, EarlyView.
Golgi enzymes are traditionally considered resident proteins retained within the Golgi apparatus. Here, we demonstrate that a subset transiently reaches the cell surface and is subsequently retrieved to the trans‐Golgi network via retrograde transport. Using a nanobody‐based toolkit, we uncover a dynamic trafficking cycle of several Golgi enzymes.
Dominik P. Buser, Tina Junne
wiley   +1 more source

Enhanced YOLOv8-based method for space debris detection using cross-scale feature fusion

Discover Applied Sciences
Optical observations play a crucial role in monitoring space debris, and long exposure large field-of-view telescopes exhibit robust detection capabilities for identifying space debris.
Yang Guo, Xianlong Yin, Yao Xiao, Zhengxu Zhao, Xu Yang, Chenggang Dai   +5 more
doaj   +1 more source

Research on Actuator Control System Based on Improved MPC

Actuators
To improve the control accuracy and interference resistance of actuator control systems in complex environments, a complete actuator control system solution has been designed.
Qingjian Zhao, Qinghai Zhang, Shuang Zhao, Xiaoqian Zhang, Shilei Lu, Yang Guo, Liqiang Song, Zhengxu Zhao   +7 more
doaj   +1 more source

Design and Analysis of Preload Control for Space Debris Impact Adhesion Capture Method

IEEE Access, 2020
The growing space debris poses a serious threat to the safety of the space environment, and the necessity and urgency of active space debris removal have reached a consensus around the world.
Zhengyou Xie, Xinlong Chen, Yajing Ren, Yangyang Zhao   +3 more
doaj   +1 more source

Autonomy for Active Space Debris Removal: Research Issues and Approaches [PDF]

, 2013
Even though the infinite vastness of the universe is an accepted theory, apparently infinity ends when it comes to orbits surrounding the Earth. This was a hard lesson to learn when Iridium 33 and Cosmos 2251 collided in the low Earth orbit in February ...
Förstner, Roger, Peters, Susanne, Fiedler, Hauke   +2 more
core  

Structural and biochemical analysis of a B12 superbinder

FEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices, Jacob J. Whittaker, Dirk J. Slotboom, Albert Guskov   +3 more
wiley   +1 more source

A Hybrid EMD-ICA-DLinear Multi-View Representation Model for Accurate Satellite Orbit Prediction in Space

Aerospace
Accurate prediction of the on-orbit positions of Low Earth Orbit (LEO) satellites is essential for mission success, operational efficiency, and safety.
Yang Guo, Boyang Wang, Zhengxu Zhao
doaj   +1 more source

Evolution of space debris for spacecraft in the Sun-synchronous orbit

Open Astronomy, 2020
In this paper, the evolution of space debris for spacecraft in the Sun-Synchronous orbit has been investigated. The impact motion, the evolution of debris from the Sun-Synchronous orbit, as well as the evolution of debris clouds from the quasi-Sun ...
Jiang Yu, Li Hengnian, Yang Yue
doaj   +1 more source