Two-step accuracy improvement of motion compensation for airborne SAR with ultrahigh resolution and wide swath

J Chen, B Liang, DG Yang, DJ Zhao… - … on Geoscience and …, 2019 - ieeexplore.ieee.org
The motion compensation (MOCO) for the airborne SAR with ultrahigh resolution and wide
swath is required to consider the range-dependent (RD) phase error. The RD phase error …

Knowledge-aided 2-D autofocus for spotlight SAR filtered backprojection imagery

X Mao, L Ding, Y Zhang, R Zhan… - IEEE Transactions on …, 2019 - ieeexplore.ieee.org
The filtered backprojection (FBP) algorithm is a popular choice for complicated trajectory
synthetic aperture radar (SAR) image formation processing due to its inherent nonlinear …

An extended two step approach to high-resolution airborne and spaceborne SAR full-aperture processing

D Zhu, T Xiang, W Wei, Z Ren, M Yang… - … on Geoscience and …, 2020 - ieeexplore.ieee.org
The processing of synthetic aperture radar (SAR) echoes collected during radar antenna
beam steering, such as in the staring spotlight, sliding spotlight, and TOPS operating modes …

Time-domain autofocus for ultrahigh resolution SAR based on azimuth scaling transformation

H Lin, J Chen, M Xing, X Chen, N Li… - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
For ultrahigh resolution synthetic aperture radar (SAR), azimuth spectrum aliasing limits the
application of frequency-domain autofocus algorithms. Therefore, time-domain autofocus …

Accelerated RANSAC for accurate image registration in aerial video surveillance

J Zheng, W Peng, Y Wang, B Zhai - IEEE Access, 2021 - ieeexplore.ieee.org
Compared with ground views and direct overhead views (for orbital satellites), aerial
robotics allow for capturing videos from diverse viewpoints and scenes, thus, the content of …

Efficiency and robustness improvement of airborne SAR motion compensation with high resolution and wide swath

J Chen, B Liang, J Zhang, DG Yang… - … and Remote Sensing …, 2020 - ieeexplore.ieee.org
For airborne synthetic aperture radar (SAR) imaging with high resolution and wide swath,
the atmospheric turbulence may produce serious range-dependent (RD) motion error. To …

Multi-scale fused SAR image registration based on deep forest

S Mao, J Yang, S Gou, L Jiao, T Xiong, L Xiong - Remote Sensing, 2021 - mdpi.com
SAR image registration is a crucial problem in SAR image processing since the registration
results with high precision are conducive to improving the quality of other problems, such as …

SVD-based ambiguity function analysis for nonlinear trajectory SAR

J Chen, M Xing, XG Xia, J Zhang… - IEEE Transactions on …, 2020 - ieeexplore.ieee.org
A nonlinear trajectory of a radar platform in synthetic aperture radar (SAR) may lead to
severe coupling between the range and the azimuth, which may make the ambiguity …

Learning an SAR image despeckling model via weighted sparse representation

J Zhang, J Chen, H Yu, D Yang, X Xu… - IEEE Journal of …, 2021 - ieeexplore.ieee.org
Synthetic aperture radar (SAR) images are inherently degraded by the speckle noise due to
the coherent imaging, which may affect the performance of subsequent image analysis task …

Airborne SAR autofocus based on blurry imagery classification

J Chen, H Yu, G Xu, J Zhang, B Liang, D Yang - Remote Sensing, 2021 - mdpi.com
Existing airborne SAR autofocus methods can be classified as parametric and non-
parametric. Generally, non-parametric methods, such as the widely used phase gradient …