Results 131 to 140 of about 1,281 (254)

Adaptive frequency-domain CFAR for robust spectrum sensing under jamming and administrator-controlled counter-access. [PDF]

Sci Rep
Shams MS, Abouelfadl AA, Mansour A, Soliman MSAL.   +3 more
europepmc   +1 more source

The Evolution of Autonomous Systems for Planetary Cave Exploration: A Review

Journal of Field Robotics, EarlyView.
ABSTRACT The exploration of Subsurface Access Points (SAPs), such as lava tubes on the Moon and Mars, has gained significant interest due to their potential as stable environments shielded from surface radiation and temperature extremes. These sites are considered high‐value targets for detecting water and signs of ancient life, and assessing their ...
Sarah Swinton, Daniel Mitchell, Jamie Blanche, Euan McGookin, David Flynn   +4 more
wiley   +1 more source

A Secure Spatial Multiplexing Transmission Scheme in MIMO Amplify-and-Forward Wiretap Relaying Systems Using Deliberate Precoder Randomization. [PDF]

Sensors (Basel)
Ko K, Song C.
europepmc   +1 more source

From Flybys to Sample Return: A Review of Space Probes and Robotic Sampling Technologies for Small Bodies

Journal of Field Robotics, EarlyView.
ABSTRACT As a crucial puzzle piece of deep space exploration, exploring small bodies can provide significant scientific insights and valuable mineral resources. Unlike missions to the Moon and Mars, small‐body missions pose distinct technical challenges, including communication delays, weak gravity, and uncertain environments. This paper reviews a full
Xin Zhang, Hao Zhou, Dalin Zhou, Zhaojie Ju   +3 more
wiley   +1 more source

A dynamic confrontational game model of uav's data link in the complicated electromagnetic environment. [PDF]

Sci Rep
Gao P, Zhi Y.
europepmc   +1 more source

Tracing Three Decades of Low Earth Orbit Satellite Communication Development: A Bibliometric and Main Path Analysis of Network Architectures, Protocol Evolution, and Emerging Intelligent Services

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT Low Earth Orbit (LEO) satellite communication systems have evolved into a critical component of global broadband networks, enabling wide‐area connectivity, IoT services, and intelligent multilayer satellite–terrestrial integration. Despite rapid advancements in constellation deployment, routing mechanisms, resource management, and LEO–5G/6G ...
Wei‐Hao Su, Ya‐Chen Chuang, Long‐Sheng Chen   +2 more
wiley   +1 more source

On the Security of Cell-Free Massive MIMO Networks. [PDF]

Sensors (Basel)
Mohammed H, Abdelfatah RI, Alshaer N, Nasr ME, Saafan AM.   +4 more
europepmc   +1 more source

Teachers' Pedagogical Reasoning and Students' Three‐Dimensional Learning

Science Education, EarlyView.
ABSTRACT This article reports analyses of data from a design‐based implementation project focused on middle‐ and high‐school science teaching. Drawing on teacher interviews and surveys as well as student learning evidence, we examined the relationships between teachers' pedagogical reasoning and their students' three‐dimensional learning. Most teachers
Christie Morrison Thomas, Beth A. Covitt, Qinyun Lin, Stefanie L. Marshall, James B. Hancock II, Charles W. Anderson   +5 more
wiley   +1 more source

Distributed Phased-Array Radar Mainlobe Interference Suppression and Cooperative Localization Based on CEEMDAN-WOBSS. [PDF]

Sensors (Basel)
Liu X, He H, Li R, Wu Y, Zhang X, You Y.
europepmc   +1 more source

Welcome to the Jungle: An Examination of the Making of Science Standards

Science Education, EarlyView.
ABSTRACT Nearly 50 million public school students in the United States are required to learn the content prescribed by state‐mandated science standards. Although much is known about the implementation of science standards and teachers' perceptions of them, the development process of these standards remains unclear.
Allison M. Esparza, Joanne K. Olson
wiley   +1 more source