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Estimation of Surface Canopy Water in Pacific Northwest Forests by Fusing Radar, Lidar, and Meteorological Data
individual trees Sentinel-1 radar imagery time series Pacific Northwest
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2023/12/6
Surface Canopy Water (SCW) is the intercepted rain water that resides within the tree canopy and plays a significant role in the hydrological cycle. Challenges arise in measuring?SCW?in remote areas u...
中国科学院生物物理研究所高璞组揭示RADAR超分子机器执行RNA脱氨和抗病毒免疫的机制（图）
RADAR超分子机器 RNA脱氨 抗病毒免疫
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2023/2/14
宿主细胞依赖多种免疫应答机制来对抗病毒感染。其中，针对核酸分子的免疫识别和操作，是极为核心的抗病毒免疫策略，其广泛存在于从细菌到哺乳动物等几乎所有宿主系统中（图-1）。相较于哺乳动物细胞稍显复杂的信号转导和调控，细菌往往更为简单高效，其编码的多种抗病毒免疫系统可直接对核酸分子进行切割或修饰（图-1）。这种特点也使得细菌免疫系统被广泛用于多种生物学工具的开发（如R-M和CRISPR-Cas等），极大...
光电信息大讲堂第211期：Silicon-Based Mm-Wave Circuit Techniques for Communication and Radar
毫米波芯片 硅基工艺 通信芯片
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2023/4/17
毫米波具有丰富的频率资源，已逐步应用于高速通信和高精度雷达等领域。但由于硅基工艺本身的限制，采用硅基工艺实现毫米波芯片面临巨大的技术挑战。本报告讨论了硅基毫米波芯片技术的发展以及所面临的技术挑战，介绍了本课题组在解决宽带收发链路、高精度毫米波信号源和相控阵等方面的工作，并简要介绍了本课题组开发的毫米波雷达与通信芯片。
Teachers learn radar basics in LLRISE outreach program（图）
LLRISE外展计划 雷达基础知识 雷达
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2023/6/8
For high school teachers Esmeralda Hernandez and Liz Raine, radar is not a topic typically part of their curriculums. Hernandez teaches mathematics at Jubilee Brownsville High School in Brownsville, T...
Professor engineers radar tools to monitor space weather（图）
雷达工具 空间天气 太空天气
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2023/5/24
We are all too familiar with severe weather on Earth, but many of us aren’t aware of the severe weather in space – the varying conditions between the sun and the Earth, including solar wind, flares an...
Weather surveillance radar data shows 45 million insects taking flight over brightly lit city（图）
Weather surveillance radar data 45 million insects flight lit city
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2021/4/16
The expansion of artificial night lights globally has had important impacts on animal behavior and health. A new study led by researchers at the University of Oklahoma on the effects of brig...
Weather radar records drastic drop in mayfly populations（图）
Weather radar drastic drop mayfly populations
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2020/2/20
At the beginning of each summer, mayfly larvae emerge from bodies of water and shed their skin to become full-fledged mayflies, similar to the way in which caterpillars become butterflies.
Exploring combinations of multi-temporal and multi-frequency radar backscatter observations to estimate above-ground biomass of tropical forest
Above-ground biomass Tropical forest Synthetic Aperture Radar Multi-frequency Multi-temporal
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2024/2/5
Approaches exploiting the complementary information on forest above-ground biomass (AGB) contained in multi-temporal and multi-frequency radar backscatter have hardly been explored in the tropics. Hav...
GEOPHYSICAL PARAMETER RETRIEVAL FOR MICROWAVE C BAND SYNTHETIC APERTURE RADAR (SAR) DATASET USING INTEGRAL EQUATION MODEL
Microwave SAR Geophysical Parameters IEM Modelling
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2019/2/28
The microwave remote sensing is highly useful, as it provides synoptic observation of the Earth’s surface or planetary bodies, regardless of day or night and the atmospheric conditions, propagation th...
RADAR CROSS SECTION CHARACTERIZATION OF CORNER REFLECTORS IN DIFFERENT FREQUENCY BANDS AND POLARIZATIONS
Corner Reflector Radar Cross Section Trihedral Dihedral Compact Antenna Test Range Facility Calibration
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2019/2/28
Corner Reflectors (CR) are standard passive radar targets which offer one of the best solutions for SAR calibration. Radar Cross Section (RCS) of corner reflectors plays a vital role for estimation of...
ASSESSING THE CONDITION OF BURIED PIPE USING GROUND PENETRATING RADAR (GPR)
Ground Penetrating Radar (GPR) Pipe deterioration Buried utilities
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2018/11/8
The invention of Ground Penetrating Radar (GPR) technology has facilitated the possibility of detecting buried utilities and has been used primarily in civil engineering for detecting structural defec...
COMBINED VISUAL EXPLORATION OF 2D GROUND RADAR AND 3D POINT CLOUD DATA FOR ROAD ENVIRONMENTS
Ground Penetrating Radar 3D Point Cloud Infrastructure Maintenance
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2018/11/9
Ground-penetrating 2D radar scans are captured in road environments for examination of pavement condition and below-ground variations such as lowerings and developing pot-holes. 3D point clouds captur...
INFRARED ROTATION PLANE RADAR CHANGE DETECTION
Infrared Rotation Plane Radar Change Detection Depth Information Mixed Gaussian Background Modeling
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2018/5/15
The existing change detection method mainly stays on the pixel-level, which is very susceptible to light, shadow, etc. And the complex calculation and analysis for each pixel reduce the detection effi...
FLOOD EXTENT MAPPING USING DUAL-POLARIMETRIC SENTINEL-1 SYNTHETIC APERTURE RADAR IMAGERY
Flood Polarimetry SAR Radar Harvey Sentinel-1
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2018/5/14
Rapid generation of synthetic aperture radar (SAR) based flood extent maps provide valuable data in disaster response efforts thanks to the cloud penetrating ability of microwaves. We present a method...
MEASUREMENT OF SEAWARD GROUND DISPLACEMENTS ON COASTAL LANDFILL AREA USING RADAR INTERFEROMETRY
SAR SAR Interferometry Multiple-Aperture SAR Interferometry Coastal landfill Three-dimensional measurements
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2018/5/11
In order to understand the mechanism of subsidence and help reducing damage, researchers has been observed the line-of-sight subsidence on the Noksan industrial complex using SAR Interferometry(InSAR)...