Results 21 to 30 of about 1,781 (142)

ON-SITE DATA-PROCESSING ALGORITHM AND OPTIMIZATION FOR AIRBORNE ICE SOUNDING RADAR CONFIGURED ON THE “SNOW EAGLE 601” [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2021
Airborne observation is an important approach to collect data in the remote, hostile Antarctica and study the relationship between the Antarctica and global climate.
X. Cui, S. Lang, L. Li, B. Sun
doaj   +1 more source

Machine Learning Approaches for Road Condition Monitoring Using Synthetic Aperture Radar

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
Airborne synthetic aperture radar (SAR) has the potential to monitor remotely the road traffic infrastructure on a large scale. Of particular interest is the road surface roughness, which is an important road safety parameter.
Lucas Germano Rischioni   +3 more
doaj   +1 more source

Transmit beampattern design for airborne phased-MIMO radar

open access: yesThe Journal of Engineering, 2019
Airborne phased-MIMO radar based on sub-arrays is investigated that can combine the advantages of both MIMO radar and phased array radar. The transmit beampattern design method for airborne phased-MIMO radar is proposed that can control the transmit beam
Ye Dong, Fengfeng Cheng, Lanying Cao
doaj   +1 more source

Target Tracking While Jamming by Airborne Radar for Low Probability of Detection

open access: yesSensors, 2018
Although radiation power minimization is the most important method for an advanced stealth aircraft to achieve the low probability of detection (LPD) performance against the opposite passive detection system (PDS), it is not always effective when the ...
Fei Wang   +3 more
doaj   +1 more source

Multi-frequency and multi-angle radar methods application peculiarities for parameters estimation of oil pollutions on sea surface [PDF]

open access: yesРадиофизика и электроника, 2019
Subject and purpose. Comparative analysis of multi-frequency (MFM) and multi-angle (MAM) radar methods has to be carried out in order to evaluate their measurement capabilities for parameters diagnostic of emergency oil spill on sea surface.
А.Ya. Matveev   +6 more
doaj   +1 more source

Grounded L-Shaped Corner-Embraced Patch Array Polarization Conversion Metasurface Compatible with Multiband and Broadband Characteristics

open access: yesMicromachines
We propose a linear polarization rotator metasurface composed of a grounded array of L-shaped corner-embraced patches. Both simulation and experimental results confirm that the metasurface achieves a polarization conversion ratio exceeding 90% across ...
Shi Kong   +3 more
doaj   +1 more source

Forked-Crossing Metasurface for Multi-Band Polarization Conversion with Distinct Bandwidths

open access: yesMicromachines
This study presents a reflective and highly efficient multi-band metasurface polarization converter based on a forked-crossing patch array. Both simulation and experimental results reveal that such a metasurface achieves polarization conversion ratio ...
Pengpeng Zhang   +3 more
doaj   +1 more source

Sea Echoes for Airborne HF/VHF Radar: Mathematical Model and Simulation

open access: yesRemote Sensing, 2020
Currently, shore-based HF radars are widely used for coastal observations, and airborne radars are utilized for monitoring the ocean with a relatively large coverage offshore.
Fan Ding   +3 more
doaj   +1 more source

High-Gain Miniaturized Ultrawideband Antipodal Vivaldi Antenna with Metamaterials

open access: yesMicromachines
A compact high-gain antipodal Vivaldi antenna with ultra-wideband (UWB) performance ranging from 1 GHz to 25 GHz is proposed and demonstrated. The antenna features two sets of tapered exponential slots along the flare edges to enhance low-frequency ...
Wentao Zhang   +3 more
doaj   +1 more source

Enhanced Pre-STAP Beamforming for Range Ambiguous Clutter Separation with Vertical FDA Radar

open access: yesRemote Sensing, 2021
Medium pulse repetition frequency (MPRF) is an important mode in airborne radar system. Since MPRF mode brings both Doppler and range ambiguities, it causes difficulty for the airborne radar to suppress ground or sea clutter. In recent years, it has been
Weiwei Wang   +4 more
doaj   +1 more source

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