Multiple local autofocus back-projection algorithm for space-variant phase-error correction in synthetic aperture radar
L Ran, Z Liu, L Zhang, R Xie, T Li - IEEE Geoscience and …, 2016 - ieeexplore.ieee.org
The back-projection (BP) algorithm is an ideal solution for large-swath airborne SAR
imaging. However, space-variant phase errors induced by trajectory deviations dramatically …
imaging. However, space-variant phase errors induced by trajectory deviations dramatically …
Simultaneous range and cross-range variant phase error estimation and compensation for highly squinted SAR imaging
L Ran, R Xie, Z Liu, L Zhang, T Li… - IEEE Transactions on …, 2018 - ieeexplore.ieee.org
This paper addresses an autofocusing technique for highly squinted airborne synthetic
aperture radar (SAR) imaging. In highly squinted mode, the phase errors resulting by …
aperture radar (SAR) imaging. In highly squinted mode, the phase errors resulting by …
Extended autofocus backprojection algorithm for low-frequency SAR imaging
L Chen, D An, X Huang - IEEE Geoscience and Remote …, 2017 - ieeexplore.ieee.org
Since the trajectory deviations of a radar platform cause serious phase errors that degrade
the focusing quality of synthetic aperture radar (SAR) imagery, an autofocus method is very …
the focusing quality of synthetic aperture radar (SAR) imagery, an autofocus method is very …
Focusing high-resolution airborne SAR with topography variations using an extended BPA based on a time/frequency rotation principle
C Lin, S Tang, L Zhang, P Guo - Remote Sensing, 2018 - mdpi.com
With the increasing requirement for resolution, the negligence of topography variations
causes serious phase errors, which leads to the degradation of the focusing quality of the …
causes serious phase errors, which leads to the degradation of the focusing quality of the …
A less-memory and high-efficiency autofocus back projection algorithm for SAR imaging
K Hu, X Zhang, S He, H Zhao… - IEEE Geoscience and …, 2014 - ieeexplore.ieee.org
The back projection (BP) algorithm is an accurate time-domain imaging method for synthetic
aperture radar. However, the influences of wind field and turbulence on the platform make …
aperture radar. However, the influences of wind field and turbulence on the platform make …
Integrating autofocus techniques with fast factorized back-projection for high-resolution spotlight SAR imaging
Back-projection (BP) is considered as an ideal methodology for the high-resolution synthetic
aperture radar (SAR) imaging. However, applying conventional autofocus techniques to BP …
aperture radar (SAR) imaging. However, applying conventional autofocus techniques to BP …
Extended PGA for Spotlight SAR-Filtered Backprojection Imagery
T Shi, X Mao, A Jakobsson, Y Liu - IEEE Geoscience and …, 2022 - ieeexplore.ieee.org
The phase gradient autofocus (PGA) is a robust autofocusing approach that can efficiently
refocus defocused synthetic aperture radar (SAR) imagery produced by frequency-domain …
refocus defocused synthetic aperture radar (SAR) imagery produced by frequency-domain …
Precise focusing of airborne SAR data with wide apertures large trajectory deviations: A chirp modulated back-projection approach
D Meng, D Hu, C Ding - IEEE Transactions on Geoscience and …, 2014 - ieeexplore.ieee.org
In the area of airborne synthetic aperture radar (SAR), motion compensation (MOCO) is a
crucial technique employed to correct the SAR data affected by nonlinear platform trajectory …
crucial technique employed to correct the SAR data affected by nonlinear platform trajectory …
2-D Autofocus for High-Squint SAR Based on Affine Coordinate Back-Projection Algorithm
Y Lou, H Lin, Q Chen, M Xing, S Zhou… - IEEE Transactions on …, 2024 - ieeexplore.ieee.org
When synthetic aperture radar (SAR) works in high squint (HS) mode, the interpolation and
scaling operation of traditional frequency domain imaging algorithms will change the …
scaling operation of traditional frequency domain imaging algorithms will change the …
Autofocus for correcting three dimensional trajectory deviations in synthetic aperture radar
L Ran, Z Liu, T Zhang, T Li - 2016 CIE International Conference …, 2016 - ieeexplore.ieee.org
The back-projection (BP) algorithm is an ideal solution for airborne synthetic aperture radar
(SAR) imaging. However, trajectory deviations degrade BP focusing performance …
(SAR) imaging. However, trajectory deviations degrade BP focusing performance …