Results 61 to 70 of about 83,251 (291)
A reweighted matrix completion algorithm for sparse inverse synthetic aperture radar imaging
IET Radar, Sonar & Navigation, 2023 Sparse inverse synthetic aperture radar (ISAR) imaging can be generally achieved by compressed sensing (CS) methods because sparse sampling disables the approach of conventional range Doppler. However, the CS‐based methods have to convert the matrix into
Mingjiu Lv +5 more
doaj +1 more source
Multibeam single frequency synthetic aperture radar processor for imaging separate range swaths [PDF]
, 1982 A single-frequency multibeam synthetic aperture radar for large swath imaging is disclosed. Each beam illuminates a separate ""footprint'' (i.e., range and azimuth interval).
Jain, A.
core +1 more source
FMCW rail-mounted SAR: Porting spotlight SAR imaging from MATLAB to FPGA [PDF]
, 2014 In this work, a low-cost laptop-based radar platform derived from the MIT open courseware has been implemented. It can perform ranging, Doppler measurement and SAR imaging using MATLAB as the processor.
Gray, D., Le Kernec, J., Melnikov, A.
core +1 more source
Optics Express, 2017 A photonics-based radar with generation and de-chirp processing of broadband linear frequency modulated continuous-wave (LFMCW) signal in optical domain is proposed for high-resolution and real-time inverse synthetic aperture radar (ISAR) imaging. In the
Fangzheng Zhang +6 more
semanticscholar +1 more source
Geochemistry, Geophysics, Geosystems, Volume 26, Issue 12, December 2025.Abstract South Sister volcano, Oregon Cascade Range, USA, has repeatedly erupted rhyolite since ca. 40 ka. The youngest such eruptions are the ca. 2 ka Rock Mesa and Devils Chain rhyolites, erupted several hundred years apart from two multi‐vent complexes separated by 3–6 km. Fe‐Mg interdiffusion models of orthopyroxene rims from both rhyolites produce
Nathan L. Andersen +5 more
wiley +1 more source
Terrain analysis using radar shape-from-shading [PDF]
, 2003 This paper develops a maximum a posteriori (MAP) probability estimation framework for shape-from-shading (SFS) from synthetic aperture radar (SAR) images.
Bors, A G, Hancock, E R, Wilson, R C
core +3 more sources
Imaging the Shallow Structure Beneath Askja Volcano, Iceland, With Ambient Noise Tomography
Journal of Geophysical Research: Solid Earth, Volume 130, Issue 12, December 2025.Abstract Askja is a large central volcano in the Northern Volcanic Zone (NVZ) of Iceland which last erupted effusively in 1961 and subsequently experienced steady deflation from the 1970s until August 2021, when GPS and InSAR measurements confirmed that it had begun re‐inflating.
Joseph Fone +5 more
wiley +1 more source
Micro-motion Recognition of Spatial Cone Target Based on ISAR Image Sequences
Journal of Aerospace Technology and Management, 2016 The accurate micro-motions recognition of spatial cone target is the foundation of the characteristic parameter acquisition. For this reason, a micro-motion recognition method based on the distinguishing characteristics extracted from the Inverse ...
Changyong Shu +4 more
doaj +3 more sources
Clutter rejection for MTI radar using a single antenna and a long integration time [PDF]
, 2011 Moving Target Indicators (MTI) are airborne radar systems designed to detect and track moving vehicles or aircrafts. In this paper, we address the problem of detecting hazardous collision targets to avoid them.
Goy, Philippe +2 more
core +2 more sources
The Sea Surface Height Spectrum of Internal Waves
Journal of Geophysical Research: Oceans, Volume 130, Issue 12, December 2025.Abstract Internal waves and geostrophic motions contribute to sea surface height (SSH) variability at scales order 100 km and smaller. Although geostrophic motions have a well‐defined contribution in SSH, the internal wave contribution is complex and small enough to be confounded with noise.
S. M. Soares +3 more
wiley +1 more source