Results 101 to 110 of about 601,794 (307)

An operational all-weather Great Lakes ice information system [PDF]

open access: yes
A description is given of the NASA developed all-weather ice information system for the Great Lakes winter navigation program. The system utilizes an X-band side looking airborne radar (SLAR) for determining type, location, and areal distribution of the ...
Gedney, R. T.
core   +1 more source

Copper Contact for Perovskite Solar Cells: Properties, Interfaces, and Scalable Integration

open access: yesAdvanced Energy and Sustainability Research, Volume 7, Issue 3, March 2026.
Copper electrodes, as low‐cost, scalable contacts for perovskite solar cells, offer several advantages over precious metals such as Au and Ag, including performance, cost, deposition methods, and interfacial engineering. Copper (Cu) electrodes are increasingly considered practical, sustainable alternatives to noble‐metal contacts in perovskite solar ...
Shuwei Cao   +4 more
wiley   +1 more source

A comparison of laser based ranging systems for AR/C category 1: Hardware [PDF]

open access: yes
This paper will present some aspects of the effect of inherent laser effects on the performance of CW-Tone modulated and FM-CW laser ranging techniques. It will be shown that performance of these techniques is affected in different ways by inherent laser
Goode, Pleasant W., IV   +1 more
core   +1 more source

A strategy for modulation of permittivity in manganese doping to induce lattice distortion

open access: yesInfoMat, Volume 8, Issue 3, March 2026.
Manganese atoms are doped into the NiCo2O4 spinel structure by atomic substitution, which increases structural stability through the formation of manganese–oxygen bonds. The resulting lattice distortion leads to a significant increase in dielectric permittivity. Achieving an electromagnetic wave reflection loss of −63.40 dB thus provides useful insight
Fei‐Fei Xu   +9 more
wiley   +1 more source

A Track Initiation Method for FM-based Passive Radar Network Based on Multiple Elementary Hypotheses

open access: yesLeida xuebao
Passive radars based on FM radio signals have low detection probability, high false alarm rates and poor accuracy, presenting considerable challenges to target tracking in radar networks.
Yueyang HU   +4 more
doaj   +1 more source

MXene‐Based Materials: Compositional Engineering for High‐Performance Microwave Absorption

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT The rapid advancement of aerospace and electronic information technologies has imposed increasingly stringent requirements on microwave absorbing materials (MAMs), such as high absorption efficiency, lightweight, and environmental stability, making the development of advanced MAMs urgent for both civilian and national defense applications ...
Pan‐Pan Zhou   +8 more
wiley   +1 more source

Seasonal variations of the microwave scattering properties of deciduous trees as measured in the 1-18 GHz spectral range [PDF]

open access: yes
The author has identified the following significant results. Employing two FM-CW radar spectrometers, scattering data were acquired from stands of deciduous trees during the spring and autumn.
Bush, T.   +3 more
core   +1 more source

Sensitivity of Flood Extent and Population Exposure to Variations in Bathymetry Across a Shallow Continental Shelf Lagoon

open access: yesJournal of Geophysical Research: Oceans, Volume 131, Issue 3, March 2026.
Abstract Bathymetry is a critical input to storm surge models on coastlines fronted by lagoon systems, yet few studies explore how variations in bathymetry influence flood impacts, flooded extent, and exposed population across these globally widespread morphologies.
Zaid Al‐Attabi   +8 more
wiley   +1 more source

Anti-ISRJ Method Based on Intrapulse Frequency-coded Joint Frequency Modulation Slope Agile Radar Waveform

open access: yesLeida xuebao
Interrupted Sampling Repeater Jamming (ISRJ) is a type of intrapulse coherent jamming that can form multiple realistic false targets that lead or lag behind the actual target, severely affecting radar detection.
Xiaoge WANG   +5 more
doaj   +1 more source

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