Results 11 to 20 of about 326 (121)
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
Method of Range Ambiguity Suppression Combining Sparse Reconstruction and Matched Filtering
Leida xuebao, 2022 To a certain extent, SAR images are affected by range ambiguity due to antenna sidelobe characteristics and pulse operating system. The work of range ambiguity suppression focuses on SAR system design and signal processing.
Meng QI +5 more
doaj +1 more source
Precise Ambiguity Performance Evaluation for Spaceborne SAR with Diverse Waveforms
Remote Sensing, 2023 The ambiguity suppression is a technical challenge for the present generation of spaceborne synthetic aperture radar (SAR) systems since this kind of suppression does not take the high spatial resolution and wide coverage into account simultaneously. The
Guodong Jin +7 more
doaj +1 more source
Integrating Agile Waveforms With DBF for HRWS SAR Imagery and Adaptive Jamming Suppression
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023 Range ambiguity resolving and deceptive jamming suppression are both challenges for high-resolution wide-swath SAR imagery. With the accommodation of the digital beamforming (DBF) techniques, agile waveforms are of potential to tackle the ambiguity ...
GanE Dai, Sha Huan, Lei Zhang
doaj +1 more source
Remote Sensing, 2021 Azimuth ambiguities, or ghosts on SAR images, represent one of the main obstacles for SAR applications involving coastal monitoring activities such as ship detection.
Joon Hyuk Choi, Joong-Sun Won
doaj +1 more source
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
Method of Range Ambiguity Suppression Combining Sparse Reconstruction and Matched Filter
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022 Synthetic aperture radar (SAR) images are often affected by range ambiguity due to antenna sidelobe characteristics and pulse operating mechanism. The work of range ambiguity suppression focuses on both SAR system design and signal processing. On the one
Meng Qi +4 more
doaj +1 more source
Remote Sensing, 2020 Hybrid quadrature polarimetric (hybrid quad-pol) synthetic aperture radar (SAR) is proposed as a potential candidate for the full-polarimetric SAR mode. It allows balanced range ambiguity performance and simplified system structure.
Pengfei Zhao +4 more
doaj +1 more source
Компютерні системи та інформаційні технології, 2022 This article considers the expansion of the capabilities of digital devices of three-pulse suppression of the request of aircraft responders with side petals in terms of increasing the accuracy of measuring the azimuth of flight of aircraft.
TETIANA HOVORUSHCHENKO +1 more
doaj +1 more source
Overview of Techniques for Improving High-resolution Spaceborne SAR Imaging and Image Quality
Leida xuebao, 2019 As an important tool for acquiring remote sensing information, Synthetic Aperture Radar (SAR) has various modes, including high-resolution wide-swath, multi-angle information acquisition, high temporal observation, and three-dimensional topographic ...
LI Chunsheng, YU Ze, CHEN Jie
doaj +1 more source