Image defocus in an airborne UWB VHR microwave photonic SAR: Analysis and compensation
W Xu, B Wang, M Xiang, R Li… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
With the exploration of synthetic aperture radar (SAR), the requirements for its functionality,
precision, and response time are inevitably increasing, in which the technical core is the …
precision, and response time are inevitably increasing, in which the technical core is the …
Analysis and Compensation for Systematical Errors in Airborne Microwave Photonic SAR Imaging by 2-D Autofocus
In the area of synthetic aperture radar (SAR), the ultrahigh resolution is always a continuous
pursuit for researchers. To realize ultrahigh resolution, microwave photonics technology is …
pursuit for researchers. To realize ultrahigh resolution, microwave photonics technology is …
A processing framework for airborne microwave photonic SAR with resolution up to 0.03 m: Motion estimation and compensation
Airborne synthetic aperture radar (SAR) with an imaging resolution of up to 0.03 m is
developed. However, the imaging process suffers from motion errors with 2-D spatial-variant …
developed. However, the imaging process suffers from motion errors with 2-D spatial-variant …
A novel autofocus framework for UAV SAR imagery: Motion error extraction from symmetric triangular FMCW differential signal
W Xu, B Wang, M Xiang, C Song… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
Synthetic aperture radar (SAR) installed on unmanned aerial vehicles (UAVs) has drawn
increasing attention in the area of remote sensing due to its high spatial resolution and low …
increasing attention in the area of remote sensing due to its high spatial resolution and low …
Processing of airborne microwave photonic SAR raw data with inaccurate RSF
Due to system instability and other reasons, the actual range sampling frequency (RSF) of
the system may deviate from the ideal value for the microwave photonic synthetic aperture …
the system may deviate from the ideal value for the microwave photonic synthetic aperture …
Nonparametric Full-Aperture Autofocus Imaging for Microwave Photonic SAR
Microwave photonic synthetic aperture radar (SAR) is capable of realizing large scene
remote sensing observation with centimeter or even millimeter resolution, which greatly …
remote sensing observation with centimeter or even millimeter resolution, which greatly …
Full-aperture processing of airborne microwave photonic SAR raw data
At present, the resolution of the most advanced airborne microwave photonic synthetic
aperture radar (SAR) can reach the order of centimeters or even millimeters, so the 2-D …
aperture radar (SAR) can reach the order of centimeters or even millimeters, so the 2-D …
A modified map-drift algorithm for SAR autofocusing
W Wang, D An, Y Luo, Z Zhou… - 2018 Asia-Pacific …, 2018 - ieeexplore.ieee.org
Trajectory deviations in airborne synthetic aperture radar (SAR) will induce phase errors and
degrade the quality of SAR images. For obtaining high resolution SAR images, motion …
degrade the quality of SAR images. For obtaining high resolution SAR images, motion …
Microwave photonic SAR high-precision imaging based on optimal subaperture division
Microwave photonic synthetic aperture radar (MWP-SAR) offers a larger signal bandwidth
than conventional SAR, and its theoretical resolution can be improved to centimeter level. To …
than conventional SAR, and its theoretical resolution can be improved to centimeter level. To …
Knowledge-aided 2-D autofocus for spotlight SAR range migration algorithm imagery
X Mao, X He, D Li - IEEE Transactions on Geoscience and …, 2018 - ieeexplore.ieee.org
With continuous improvement of the synthetic aperture radar (SAR) resolution, the 2-D
defocus effect in SAR image resulting from uncompensated motion error has made …
defocus effect in SAR image resulting from uncompensated motion error has made …