Results 61 to 70 of about 66,001 (272)
RDAnet: A Deep Learning Based Approach for Synthetic Aperture Radar Image Formation [PDF]
arXiv, 2020 Synthetic Aperture Radar (SAR) imaging systems operate by emitting radar signals from a moving object, such as a satellite, towards the target of interest. Reflected radar echoes are received and later used by image formation algorithms to form a SAR image.
arxiv
Satellite Data in Agricultural and Environmental Economics: Theory and Practice
Agricultural Economics, EarlyView.ABSTRACT Agricultural and environmental economists are in the fortunate position that a lot of what is happening on the ground is observable from space. Most agricultural production happens in the open and one can see from space when and where innovations are adopted, crop yields change, or forests are converted to pastures, to name just a few examples.
David Wuepper +2 more
wiley +1 more source
Four-dimensional SAR Imaging Algorithm Based on Iterative Reconstruction of Magnitude and Phase
Leida xuebao, 2016 Observation data obtained from the Four-Dimensional (4D) Synthetic Aperture Radar (SAR) system is sparse and non-uniform in the baseline-time plane. Hence, the imaging results acquired by traditional Fourier-based methods are limited by high side lobes ...
Ren Xiaozhen, Yang Ruliang
doaj +1 more source
3D Near-Field Millimeter-Wave Synthetic Aperture Radar Imaging [PDF]
arXiv, 2020 In this paper, we present 3D high resolution radar imaging process at millimeter-Wave (mmWave) frequencies by creating the effect of a large aperture synthetically. We use a low cost fully integrated Frequency Modulated Continuous Wave (FMCW) radar operating at $\rm 79\;GHz$ and then perform Synthetic Aperture Radar (SAR) imaging in the near-filed zone.
arxiv
CLASSIFIER FUSION OF HIGH-RESOLUTION OPTICAL AND SYNTHETIC APERTURE RADAR (SAR) SATELLITE IMAGERY FOR CLASSIFICATION IN URBAN AREA [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2014 This study concerned with fusion of synthetic aperture radar and optical satellite imagery. Due to the difference in the underlying sensor technology, data from synthetic aperture radar (SAR) and optical sensors refer to different properties of the ...
T. Alipour Fard, M. Hasanlou, H. Arefi
doaj +1 more source
Inferring Discharge From River Geometry on Titan
Geophysical Research Letters, Volume 52, Issue 8, 28 April 2025.Abstract Titan's dense atmosphere, composed mainly of methane and nitrogen, maintains a methane cycle that shapes its surface. Like water on Earth, methane precipitation erodes Titan's surface, carving river networks at all latitudes, as revealed by the Cassini‐Huygens mission.
C. Daudon +4 more
wiley +1 more source
Polarimetric Calibration for Ground-based Synthetic Aperture Radar based on Point Target Approach
Jurnal ElkomikaABSTRAK Kalibrasi polarimetri (PolCal) dari citra radar aperture sintetis berbasis darat (GB SAR) sangat penting dalam aplikasi analisis spasial empiris.
NURUL CHASANAH +5 more
doaj +1 more source
OFDM Synthetic Aperture Radar Imaging with Sufficient Cyclic Prefix [PDF]
, 2013 The existing linear frequency modulated (LFM) (or step frequency) and random noise synthetic aperture radar (SAR) systems may correspond to the frequency hopping (FH) and direct sequence (DS) spread spectrum systems in the past second and third generation wireless communications. Similar to the current and future wireless communications generations, in
arxiv +1 more source
In Situ Observations of the Thermal Strain Coefficient of Sea Ice
Geophysical Research Letters, Volume 52, Issue 7, 16 April 2025.Abstract We conduct observations of sea ice thermal strain using a laser theodolite in situ (0.3–1 km distances) and InSAR remote sensing (1–22 km). We capture the thermal strain relationship of sea ice at geophysical scales never before measured.
L. Kaidel +4 more
wiley +1 more source
Sensors, 2016 Fully polarimetric Synthetic Aperture Radar (polSAR) data analysis has wide applications for terrain and ground cover classification. The dynamics of surface and subsurface water events can lead to slope instability resulting in slough slides on earthen ...
Ramakalavathi Marapareddy +2 more
doaj +1 more source