Results 21 to 30 of about 200,445 (197)
Accounting for Azimuth Ambiguities in Interferometric Performance Analysis [PDF]
, 2012 Azimuth ambiguities affect the interferometric performance of SAR systems, causing a bias in the interferometric phase and a modulation of the interferometric coherence, as also visible in some TanDEM-X interferograms.
Villano, Michelangelo +3 more
core +1 more source
Azimuth-Resolved Circular Dichroism of Metamaterials
, 2022 Chiral optical metamaterials have attracted a great deal of attention due to their intriguing properties with respect to fundamental research and practical applications.
Shuliang Ren +19 more
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Unambiguous Reconstruction for Multichannel Nonuniform Sampling SAR Signal Based on Image Fusion
IEEE Access, 2020 Multichannel signal processing in azimuth is a vital technique to enable a wide-swath Synthetic Aperture Radar (SAR) with high azimuth resolution. However, the multichannel high-resolution and wide-swath (HRWS) SAR system always suffers from the problem ...
Liming Zhou +6 more
doaj +1 more source
A Novel Time-Domain Frequency Diverse Array HRWS Imaging Scheme for Spotlight SAR
Remote Sensing, 2022 The frequency diverse array (FDA) technique is a novel scheme for high resolution wide swath synthetic aperture radar (SAR) imaging, which employs a frequency increment across the array elements.
Yuhao Wen +5 more
doaj +1 more source
Remote Sensing, 2021 Hybrid and ±π/4 quadrature-polarimetric (quad-pol) synthetic aperture radar (SAR) systems operating from space can obtain all polarimetric components simultaneously but suffer from severe azimuth ambiguities in the cross-polarized (cross-pol) measurement
Pengfei Zhao +4 more
doaj +1 more source
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021 In this article, an effective clutter suppression and moving target imaging approach is proposed for the geosynchronous-low earth orbit (GEO-LEO) bistatic multichannel synthetic aperture radar (SAR) system, which is robust for the fast moving target with
Shuangxi Zhang +5 more
doaj +1 more source
Cross-Pol Pattern Effects of Parabolic Reflector Antennas on the Performance of Spaceborne Quad-Pol SAR Systems [PDF]
Journal of Electromagnetic Engineering and Science, 2021 The ambiguity performance related to the image quality of a synthetic aperture radar (SAR) system can be categorized into range ambiguity, azimuth ambiguity, and cross ambiguity depending on the cause of the ambiguity signals.
Jung-Hwan Lim +2 more
doaj +1 more source
Azimuth Phase Coding for Range Ambiguity Suppression in SAR [PDF]
, 2004 A novel ambiguity suppression technique is proposed. Range ambiguities in synthetic aperture radar (SAR) images are eliminated with an azimuth filter after having applied an azimuth phase modulation to the transmitted pulses and a corresponding ...
Kusk, Anders, Dall, Jørgen
core +1 more source
Joint Two-Dimensional Ambiguity Resolving Based on Space-Time Filtering for MIMO-SAR
International Journal of Antennas and Propagation, 2014 In order to resolve the range and azimuth ambiguity in MIMO-SAR imaging, this paper proposed a joint two-dimensional ambiguity resolving method based on space-time filtering, which according to the ambiguity in different subscene is relative to different
Ping-ping Huang +3 more
doaj +1 more source
Multi-Channel SAR Imaging on Cruising Ships with Sub-Orbital Spaceplane
Remote Sensing, 2022 A multi-channel synthetic aperture radar (SAR) on board a spaceplane orbiting near the top of the atmosphere is proposed to acquire images of cruising ships.
Li-Yang Su, Jean-Fu Kiang
doaj +1 more source