Results 21 to 30 of about 112,900 (258)
OPTICAL-ELECTRONIC COMPLEX OF DETAILED SURVEILLANCE [PDF]
Научно-технический вестник информационных технологий, механики и оптики, 2020 Subject of Research. The paper presents algorithms and methods of the optoelectronic complex operation for detailed surveillance in space aimed at the search, detection and registration of spacecraft images withdrawn from service due to the expiration of
Andrey V. Denisov +3 more
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Parameter estimation of weak space‐based ADS‐B signals using genetic algorithm
ETRI Journal, 2020 Space‐based automatic dependent surveillance‐broadcast (ADS‐B) is an important emerging augmentation of existing ground‐based ADS‐B systems. In this paper, the problem of space‐based ultra‐long‐range reception processing of ADS‐B signals is described. We
Feng Tao, Liang Jun
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High-Altitude Balloon-Based Sensor System Design and Implementation
Sensors, 2020 As a kind of large-scale unmanned aerial vehicle, a high-altitude balloon can carry a large load up to tens of kilometers in the near space for a long time, which brings a new way for the stratosphere atmospheric detection. In order to provide a suitable
Zhanchao Wang +4 more
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Space-Based ADS-B Latency Evaluation in Jakarta and Makassar Flight Information Regions
Aviation Electronics, Information Technology, Telecommunications, Electricals, ControlsThis study evaluates the latency performance of Space-Based Automatic Dependent Surveillance–Broadcast (ADS-B) within the Jakarta and Makassar Flight Information Regions (FIRs).
Anastasia Andini Yuanita +2 more
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Group Tracking of Space Objects within Bayesian Framework
Leida xuebao, 2013 It is imperative to efficiently track and catalogue the extensive dense group space objects for space surveillance. As the main instrument for Low Earth Orbit (LEO) space surveillance, ground-based radar system is usually limited by its resolving power ...
Huang Jian, Hu Wei-dong
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Applied Sciences, 2022 Space-based wide-field surveillance systems are of great significance in maintaining the security of space resources by avoiding collisions between space targets. However, their performance is hindered by stray light phenomena.
Jianing Wang, Xiaodong Wang, Yunhui Li
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PLoS ONE, 2021 The outbreak of the COVID-19 disease was first reported in Wuhan, China, in December 2019. Cases in the United States began appearing in late January. On March 11, the World Health Organization (WHO) declared a pandemic.
Fuyu Xu, Kate Beard
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Therapeutic Apheresis and Dialysis, EarlyView.ABSTRACT Background Japan has one of the highest dialysis prevalence rates worldwide and a shrinking, aging population. Whether dialysis burden has entered a sustained post‐peak phase or whether recent declines partly reflect pandemic‐related disruptions remains uncertain.
Hatice Şahin +2 more
wiley +1 more source
A Robust Space Target Extraction Algorithm Based on Standardized Correlation Space Construction
IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingWith the increasing amount of space debris in near-earth space, the surveillance of space has become more crucial to prevent potential space collisions. In an optical surveillance system, a multitude of debris with varying sizes, speeds, and intensities ...
Han Wang +7 more
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Microbiome‐blood–brain barrier interactions in aging — mechanisms and therapeutic potential
FEBS Letters, EarlyView.Aging reshapes the gut microbiome (↓SCFA‐producing commensals; ↑pro‐inflammatory outputs), shifting circulating metabolites (↓SCFAs; ↑LPS, ↑TMAO, ↑PAA) that act at the BBB to increase nonspecific transcytosis, alter transport, and promote astrocyte reactivity, heightening brain vulnerability.
Daniel Cuervo‐Zanatta +3 more
wiley +1 more source