Results 71 to 80 of about 419,292 (356)

Multidimensional Radar Waveforms: A New Paradigm for the Design and Operation of Highly Performant Spaceborne Synthetic Aperture Radar Systems

, 2007
This paper introduces and analyses the innovative paradigm of multidimensional waveform encoding for spaceborne synthetic aperture radar (SAR). The combination of this technique with digital beamforming on receive enables a new class of highly ...
Alberto Moreira, Moreira, Alberto, Nicolas Gebert, Gebert, Nicolas, Krieger, Gerhard, Gerhard Krieger   +5 more
core   +1 more source

In Situ Polyurea Integration for Self‐Healing, Durable Transparent Electromagnetic‐Interference Shielding Film

Advanced Science, EarlyView.
A steric‐hindrance molecular engineering strategy uses dimethyl maleate (DMM) to convert poly(1,4‐butanediol) bis(4‐aminobenzoate) (PBDAB) into a precursor with reduced reactivity via Michael addition, thereby retarding the curing process to form a transparent, ultraflexible, and self‐healable secondary‑amine polyurea (PuSA) with a crosslinked network.
Sinan Zheng, Shanyu Zhao, Gengjiang Yao, Yue Liu, Fei Pan, Mingrui Han, Zecheng Li, Shanbo Li, Jiurong Liu, Na Wu, Zhihui Zeng   +10 more
wiley   +1 more source

Unsupervised change detection in PolSAR images using siamese encoder–decoder framework based on graph-context attention network

International Journal of Applied Earth Observations and Geoinformation, 2023
Extracting difference features is a key technique for polarimetric synthetic aperture radar (PolSAR) image change detection. Although the current PolSAR change detection algorithms based on convolutional neural networks (CNNs) can capture the local ...
Zhifei Yang, Yan Wu, Ming Li, Xin Hu, Zhikang Li   +4 more
doaj   +1 more source

Recent Advances in Programmable Metasurfaces and Meta‐Devices

Advanced Electronic Materials, EarlyView.
Programmable metasurfaces enable various novel functionalities by dynamically tuning electromagnetic wavefronts. This article provides a comprehensive review of recent advances in microwave and terahertz programmable metasurfaces, covering electrical, thermal, optical, and mechanical control mechanisms.
Linda Shao, Chong He, Nan Wang, Liming Si, Weiren Zhu   +4 more
wiley   +1 more source

Inversion of Rice Biophysical Parameters Using Simulated Compact Polarimetric SAR C-Band Data

Sensors, 2018
Timely and accurate estimation of rice parameters plays a significant role in rice monitoring and yield forecasting for ensuring food security. Compact-polarimetric (CP) synthetic aperture radar (SAR), a good compromise between the dual- and quad ...
Xianyu Guo, Kun Li, Yun Shao, Zhiyong Wang, Hongyu Li, Zhi Yang, Long Liu, Shuli Wang   +7 more
doaj   +1 more source

Editorial for Special Issue “Remote Sensing of Precipitation: Part III”

Remote Sensing, 2023
This Special Issue of Remote Sensing, which is the third in a series entitled “Remote Sensing of Precipitation”, comprises a collection of ten papers devoted to remote sensing applications for measuring precipitation; these include new satellite ...
Silas Michaelides
doaj   +1 more source

Validation of a G-Band Differential Absorption Cloud Radar for Humidity Remote Sensing

, 2020
Differential absorption radar (DAR) offers an active remote sensing solution to the problem of measuring humidity profiles with high vertical and horizontal resolution in hydrometeor layers...
R. Roy, M. Lebsock, L. Millán, K. Cooper   +3 more
semanticscholar   +1 more source

Smart Multi-Aperture Radar Techniques for Spaceborne Remote Sensing

, 2008
Data compression is crucial for modern synthetic aperture radar systems where high resolution or large coverage may result in huge amounts of raw data.
Bordoni, Federica, Federica Bordoni, Nicolas Gebert, Younis, Marwan, Gebert, Nicolas, Krieger, Gerhard, Marwan Younis, Gerhard Krieger   +7 more
core   +1 more source

Ultrastable Self‐Cross‐linkable Electro‐Optic Materials Based on a Bisanthracene Scaffold

Advanced Electronic Materials, EarlyView.
A novel bisanthracene‐based self‐cross‐linkable electro‐optic chromophore (TD2) is developed. TD2 exhibits a high r33 of 141 pm/V and a cross‐linked Tg up to 195 °C, retaining 99.75% of its initial EO response after 500 h at 85 °C, showing record‐high thermal stability for single‐molecule self‐cross‐linking EO materials.
Xingtao Wang, Zhifan Liu, Qinghua Yang, Jiayan Xu, Lin Li, Fenggang Liu, Shengyu Cong   +6 more
wiley   +1 more source

Remote sensing of soil moisture using Rydberg atoms and satellite signals of opportunity [PDF]

Scientific Reports
Spaceborne radar remote sensing of the earth system is essential to study natural and man-made changes in the ecosystem, water and energy cycles, weather and air quality, sea level, and surface dynamics.
D. Arumugam, Jun-Hee Park, Brook Feyissa, Jack Bush, Srinivas Prasad Mysore Nagaraja   +4 more
semanticscholar   +1 more source