Results 81 to 90 of about 12,713 (241)

Sector Imaging Radar for Enhanced Vision [PDF]

, 2001
SIREV (Sector Imaging Radar for Enhanced Vision) is an innovative radar system which can supply high-quality images of a sector in front of an aircraft under almost every weather condition.
Witte, Franz, Mittermayer, Josef, Keydel, Wolfgang, Moreira, Alberto, Wendler, Michael, Krieger, Gerhard   +5 more
core  

Multipath Reflectivity Estimation in Urban Environments for Synthetic Aperture Radar Images [PDF]

, 2010
Synthetic Aperture Radar (SAR) images a target region reflectivity function in the multi-dimensional spatial domain of range and cross-range. SAR synthesizes a large aperture radar in order to achieve a finer azimuth resolution than the one provided by ...
Arriba Ruiz, Imanol de, F. Perez-Martinez, Muñoz Ferreras, José María, Pérez Martínez, Félix, I. de Arriba-Ruiz, J. M. Munoz-Ferreras   +5 more
core   +2 more sources

Low-resolution Airborne Radar Aircraft Target Classification

Leida xuebao, 2014
Target classification is particularly important in modern and future airborne radar. Nowadays, most investigations of radar target classification are based on wideband radar signals, which have higher requirements for SNR and radar systems, and are ...
Wang Fu-you, Luo Ding, Liu Hong-wei
doaj   +1 more source

Decoupling Backward Scattering Control and Forward Beamformed Communication in a Shared‐Aperture Retro‐Reflective/Transmissive Metasurface

Nanophotonics, Volume 15, Issue 15, 13 August 2026.
Conceptual illustration of the retro‐reflective and transmissive metasurface (RRTM). The blue radar establishes communication with the UAV via the transmissive mode, whereas the purple surveillance radar acquires the status of friendly units through the retro‐reflective mode and the two modes operate simultaneously within the same decoupled aperture ...
Shulei Zhang, Ruichao Zhu, Yuxiang Jia, Fan Wu, Xinqi Cai, Zhihui Zhang, Dan Liu, Yuxiao Guo, Jiafu Wang   +8 more
wiley   +1 more source

Fundamental aspects of netted radar performance [PDF]

, 2010
Netted radar employs several spatially distributed transmitters and receivers for information retrieval. This system topology offers many advantages over traditional monostatic and bistatic systems which use a single transmitter and a single receiver ...
Teng, Y.
core  

Spatially extensive estimates of annual accumulation in the dry snow zone of the Greenland Ice Sheet determined from radar altimetry [PDF]

, 2010
We present estimates of accumulation rate along a 200 km transect ranging in elevation from 2750 to 3150 m in the dry snow zone on the western slope of the Greenland Ice Sheet.
Guo, Q., Helm, Veit, Helm, V., de la Peña, S., Mair, D., Shepherd, A., A. Shepherd, Huybrechts, P., Q. Guo, D. Wingham, Cullen, R., S. de la Peña, P. Huybrechts, Hanna, E., Huybrechts, Philippe, V. Helm, Wingham, D., D. Mair, E. Hanna, R. Cullen, Nienow, P., P. Nienow   +21 more
core   +1 more source

Anti-Jamming Imaging Method for Carrier-Free Ultra-Wideband Airborne SAR Based on Variational Modal Decomposition

Remote Sensing
This paper investigates the airborne synthetic aperture radar via outfield experiments based on carrier-free ultra-wideband signals with fifth-order Gaussian pulses with imaging using the backward projection algorithm. Typical blanket jamming is selected
Yue Yuan, Chengjin Zhan, Wuqi Tian, Si Chen, Shuning Zhang   +4 more
doaj   +1 more source

Enhanced Retrieval of Spring Snow Depth Over Pan‐Arctic Sea Ice From AMSR2 Observations for 2013–2023 Using Multi‐Model Machine Learning

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 4, August 2026.
Abstract Snow on sea ice modulates the Earth's radiation budget and sea ice mass balance, yet satellite retrievals of Arctic snow depth remain subject to substantial algorithmic uncertainty. We develop a multi‐model machine learning (ML) framework for retrieving spring snow depth over Arctic sea ice from Advanced Microwave Scanning Radiometer 2 (AMSR2).
Yi Zhou, Chentong Zhang, Alek Petty, Xianwei Wang, Ruibo Lei, Wenxuan Liu, Yu Zhang   +6 more
wiley   +1 more source

A Method for Reducing the Impact of Range Ambiguity

Leida xuebao, 2017
In this paper, we study the clutter suppression problem of an airborne bistatic radar with range ambiguity and propose a novel method to reduce the impact of range ambiguity using geometric configuration.
Wei Min, Li Xiaobo, Wang Li
doaj   +1 more source

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