Results 41 to 50 of about 1,721,111 (174)

A SIFT Algorithm for Bistatic SAR Imaging in Spaceborne Constant-offset Configuration (in English)

Leida xuebao, 2013
Focusing on the problem of the space-variance of the range cell migration term for bistatic Synthetic Aperture Radar (SAR), a Scaled Inverse Fourier Transform (SIFT) based imaging algorithm for constant-offset configuration bistatic SAR data processing ...
Chen Shi-chao, Xing Meng-dao, Zhang Shuang-xi, Bao Zheng   +3 more
doaj   +1 more source

Unambiguous Imaging Method for GEO-LEO Bistatic SAR Based on Joint Sequential Multiframe and Multichannel Receiving Recovery

Leida xuebao, 2022
A geosynchronous (GEO) satellite can provide continuous illumination with broad beam coverage for a Low Earth Orbit (LEO) receiver, used as the transmitting station of bistatic Synthetic Aperture Radar (SAR).
Hongyang AN, Zhichao SUN, Chaodong WANG, Junjie WU, Jianyu YANG   +4 more
doaj   +1 more source

Observation and Coordination Needs for Current, Near‐Future, and Next Generation Earth‐Observing SAR Systems

Earth and Space Science, Volume 13, Issue 5, May 2026.
Abstract This paper summarizes an evaluation by experts of how coordination of Earth‐observing Synthetic Aperture Radar (SAR) missions among the world's space agencies could advance toward game‐changing scientific discoveries and fully realizing SAR's practical capability to address many issues facing society.
Cathleen E. Jones, Ake Rosenqvist, Björn Rommen, Magdalena Fitrzyk, Eric Rignot, Bernd Scheuchl, Yujie Zheng, Andrew Hooper, Mark Simons, Tomokazu Kobayashi, Paul Siqueira, Maurizio Santoro, Takeo Tadono, Laura Hess, Heather McNairn, Laura Frulla, Malin Johansson, Wolfgang Dierking, Line Rouyet, Annett Bartsch, Paco Lopez Dekker, Johnny A. Johannessen   +21 more
wiley   +1 more source

Combined intensity and coherent change detection with four classes for laboratory multistatic polarimetric synthetic aperture radar

IET Radar, Sonar & Navigation
Satellites and drone swarms can be used to collect multistatic Synthetic Aperture Radar (SAR) images. Synthetic Aperture Radar images can be used for Intelligence Surveillance and Reconnaissance.
Alexander Hagelberg, Daniel Andre, Mark Finnis   +2 more
doaj   +1 more source

Bistatic SAR Target Recognition Using Transferred Monostatic Knowledge and Cross-Domain Feature Fusion

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Bistatic synthetic aperture radar (SAR) systems offer advantages for target recognition but suffer from severe data scarcity, particularly for maritime targets, which hinders the development of data-driven deep learning methods.
Mingqing Han, Bing Sun, Zhirong Men, Yiheng Zhou, Yihang Zhi   +4 more
doaj   +1 more source

Laboratory bistatic synthetic aperture radar coherent change detection investigation

Electronics Letters, 2023
Synthetic Aperture Radar (SAR) Coherent Change Detection (CCD) allows for the detection of very small scene changes. This is particularly useful for reconnaissance and surveillance as small changes such as vehicle tracks can be identified.
Alexander Hagelberg, Daniel Andre, Mark Finnis   +2 more
doaj   +1 more source

Along-Track Swarm SAR: Echo Modeling and Sub-Aperture Collaboration Imaging Based on Sparse Constraints

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
This article proposes an along-track swarm synthetic aperture radar (ATS-SAR) system to accomplish the high frame rate and enhance imaging resolution simultaneously.
Nan Jiang, Dong Feng, Jian Wang, Jiahua Zhu, Xiaotao Huang   +4 more
doaj   +1 more source

Characterization of Mass Wasting Events on Lunar Maria Using Mini‐RF Radar Observations

Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.
Abstract Evidence of mass wasting has been observed on the Moon since at least the Apollo era. Surface features indicative of mass wasting processes are traditionally characterized geomorphologically using visible images. In this study, we aim to better understand mass wasting features via their radar properties, which can provide insights into the ...
S. L. Pérez‐Cortés, A. M. Bramson, E. G. Rivera‐Valentín, C. A. Nypaver, G. W. Patterson, A. K. Virkki, P. A. Taylor, R. Melikyan   +7 more
wiley   +1 more source

Spaceborne Radar Technologies for Earth Remote Sensing [PDF]

, 2007
Synthetic Aperture Radar (SAR) is an indispensable source of information in earth observation since SAR is the only spaceborne sensor that has highresolution, all-weather and day-and-night imaging capability.
Moreira, Alberto
core  

Feasibility, Design, and Deployment Requirements of TCR for Bistatic SAR Radiometric Calibration

Remote Sensing, 2018
The trihedral corner reflector (TCR) is widely used as the calibration device in monostatic synthetic aperture radar (SAR) calibration, and the performance of the TCR in radiometric calibration has been studied and verified in depth.
Qiaona Zheng, Yu Wang, Jun Hong, Aichun Wang   +3 more
doaj   +1 more source