Results 61 to 70 of about 3,621 (188)

Structure‐Aware Unsupervised Transmission Corridor Structure Extraction From 3DEP Lidar Using Graph Attention Embeddings and Reinforcement‐Learned DBSCAN

Transactions in GIS, Volume 30, Issue 5, August 2026.
ABSTRACT Transmission corridors are critical components of power delivery infrastructure, and their large‐area monitoring increasingly relies on national‐scale airborne lidar programs. This study presents an unsupervised, scalable framework for extracting transmission corridor structures (including conductors and supporting towers) from U.S. Geological
Nanzhou Hu, Zhe Zhang, Samantha T. Arundel, Ethan Shavers, Jungkuan Liu   +4 more
wiley   +1 more source

Sea Clutter Suppression Method Based on Ocean Dynamics Using the WRF Model

Journal of Marine Science and Engineering
Sea clutter introduces a significant amount of non-target reflections in the echo signals received by radar, complicating target detection and identification.
Guigeng Li, Zhaoqiang Wei, Yujie Chen, Xiaoxia Meng, Hao Zhang   +4 more
doaj   +1 more source

Postfrontal Deep Convection Over the Southern Ocean and Orographic Precipitation Enhancement Over Tasmania

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 14, 28 July 2026.
Abstract The orographic precipitation enhancement (OPE) generated within wintertime post‐frontal air masses is a prominent climate feature of Tasmania. This study investigates a passage of a cold sector of a mid‐latitude cyclone over the Southern Ocean (SO) and Western Tasmania (WTAS) observed from 2100 UTC 11 July to 0300 UTC 13 July.
Artur Gevorgyan, Steven Siems, Yi Huang, Luis Ackermann, T. Alinejadtabrizi   +4 more
wiley   +1 more source

Overview of Space-Time Adaptive Processing for Airborne Multiple-Input Multiple-Output Radar

Leida xuebao, 2015
Multiple-Input Multiple-Output (MIMO) radar is an emerging radar system that is of great interest to military and academic organizations due to its advantages and extensive applications.
Wang Ting, Zhao Yong-jun, Hu Tao
doaj   +1 more source

The Synoptic, Microphysical, and Radar Characteristics of Upper Great Lakes Snow Events

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 14, 28 July 2026.
Abstract The upper Great Lakes region is well‐known for significant snowfall during the winter months. The microphysical characteristics of the snow depend to a great degree on snow particle formation and growth processes that are linked to regime‐dependent environmental conditions.
Timothy J. Wagner, Jack Richter, Marian Mateling, Claire Pettersen, Mark Kulie   +4 more
wiley   +1 more source

Signal processing algorithm of ship navigation radar based on azimuth distance monitoring

International Journal of Metrology and Quality Engineering, 2019
The effect of ship navigation radar signal processing has a great impact on the overall performance of the radar system. In this paper, the signal processing algorithm is studied.
Qin Yuxin, Chen Yu
doaj   +1 more source

A Selective Dispersion–Suppressed Metasurface for Dual‐Polarization and Dual‐Broadband Electromagnetic Window at Large Angles

Nanophotonics, Volume 15, Issue 14, 27 July 2026.
In this manuscript, we propose to suppress the metasurface's undesired dispersion to widen its working range, while preserving the desired one to preserve the function. As shown in the figure, through a method of reversed superimposition (RS), we have implemented the idea on a metasurface for the dual‐band EM window at large angles (≥ 60°).
Tiefu Li, Jinwei Chen, Cunqian Feng, Jian Liu, Yuxiang Jia, Chang Ding, Yajuan Han, Xinmin Fu, Jie Yang, Zhenxu Wang, Song Zhao, Zhaotang Liu, Zhihui Zhang, Jiafu Wang   +13 more
wiley   +1 more source

Detection of moving radar targets in clutter

Information and Control, 1958
The moving target indicator is investigated for threshold power and visibility in clutter. In search for improvements, electronic scanning of the antenna beam is proposed and a detector is considered combining more than two pulses at a time.
openaire   +1 more source

First EarthCARE CPR Observations of Dynamics–Microphysics Coupling in Marine Cold‐Air Outbreak Clouds

Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract Marine cold‐air outbreak (MCAO) clouds begin as shallow cloud streets near the ice edge and evolve into broken open‐cell convection downstream. Their rapid transitions in cloud structure and microphysics are closely linked to vertical motions, but this interplay has not previously been observed from space. The EarthCARE satellite, carrying the
Jiseob Kim, Ivy Tan, Pavlos Kollias, Bernat Puigdomènech Treserras   +3 more
wiley   +1 more source

Clutter modelling and simulation for hypersonic vehicle-borne radar

The Journal of Engineering, 2019
Hypersonic vehicles (HSV) have attracted much attention in recent years because of its military value. The radar system will face more serious clutter problem due to the increasing altitude and velocity.
Mengdi Zhang, Guisheng Liao, Shengqi Zhu
doaj   +1 more source