Autofocus method for SAR image with multi-blocks

Autofocus method for SAR image with multi-blocks

In order to solve synthetic aperture radar image-focus problem when space-variant motion errors could not be ignored, this study proposes a partitioned phase gradient autofocus (PGA) method. In this method, it is most important whether the dominant scatters is in the partitioned images or not. In or...

Full description

Bibliographic Details
Main Authors:	Wei Dong, Hanwei Sun, Ruixue Zhou, Hongmeng Chen
Format:	Article
Language:	English
Published:	Wiley 2019-07-01
Series:	The Journal of Engineering
Subjects:	radar imaging synthetic aperture radar gradient methods image motion analysis SAR image synthetic aperture radar image-focus problem space-variant motion errors partitioned phase gradient autofocus method energy gradient factor energy inflection point PGA method data processing
Online Access:	https://digital-library.theiet.org/content/journals/10.1049/joe.2019.0463

Similar Items

Modified Auto-Focusing Algorithm for High Squint Diving SAR Imaging Based on the Back-Projection Algorithm with Spectrum Alignment and Truncation
by: Anqi Gao, et al.
Published: (2023-06-01)

Simplified and approximation autofocus back-projection algorithm for SAR
by: Zhenyu Guo, et al.
Published: (2019-08-01)

A High-Resolution Airborne SAR Autofocusing Approach Based on SR-PGA and Subimage Resampling With Precise Hyperbolic Model
by: Yuhui Deng, et al.
Published: (2023-01-01)

Airborne SAR Autofocus Based on Blurry Imagery Classification
by: Jianlai Chen, et al.
Published: (2021-09-01)

SAR System for UAV Operation with Motion Error Compensation beyond the Resolution Cell
by: Blas-Pablo Dorta-Naranjo, et al.
Published: (2008-05-01)

High Resolution Full-Aperture ISAR Processing through Modified Doppler History Based Motion Compensation
by: Jung-Hwan Song, et al.
Published: (2017-05-01)

An Iterative Phase Autofocus Approach for ISAR Imaging of Maneuvering Targets
by: Binbin Wang, et al.
Published: (2021-08-01)

Fast Compressive Sensing-Based SAR Imaging Integrated With Motion Compensation
by: Wei Pu, et al.
Published: (2019-01-01)

Feature Preserving Autofocus Algorithm for Phase Error Correction of SAR Images
by: Haemin Lee, et al.
Published: (2021-03-01)

A Backprojection-Based Autofocus Imaging Method for Circular Synthetic Aperture Radar
by: Bingxuan Li, et al.
Published: (2023-06-01)

Autofocusing of Maneuvering Targets in Terahertz Inverse Synthetic Aperture Radar Imaging Based on Damped Newton Method
by: Hetong Wang, et al.
Published: (2022-09-01)

SAR Imaging of Swing Ships Based on Two-Dimensional Spatial Variance Correction
by: Jindong Yu, et al.
Published: (2022-01-01)

A Modified Factorized Geometrical Autofocus Method for Wide Angle SAR
by: Han Li, et al.
Published: (2021-01-01)

Elevation Spatial Variation Error Compensation in Complex Scene and Elevation Inversion by Autofocus Method in GEO SAR
by: Faguang Chang, et al.
Published: (2021-07-01)

High-precision motion compensation for very-high-resolution SAR imaging
by: Long Zhuang, et al.
Published: (2019-07-01)

A Modified PGA for Spaceborne SAR Scintillation Compensation Based on the Weighted Maximum Likelihood Estimator and Data Division
by: Hongcheng Zeng, et al.
Published: (2022-01-01)

Altimetric Parameter Estimation in Long Coherent Processing by Airborne Delay/Doppler Altimetry Based on Bayesian Learning
by: Cheng Fang, et al.
Published: (2023-01-01)

Wide angle SAR imaging method based on hybrid representation
by: Yao Zhao, et al.
Published: (2023-08-01)

Introduction to synthetic array and imaging radars/
by: Hovanessian, Shahen A., 1931-
Published: (1980)

An Introduction to Synthetic Aperture Radar Imaging
by: Thomas P. Ager
Published: (2013-06-01)

Three‐dimensional InISAR imaging method for noncooperative targets based on respective LvD transformation and iterative Doppler focussing
by: Yu Li, et al.
Published: (2021-11-01)

Novel ISAR autofocusing method based on Bayesian inference
by: Xueru Bai, et al.
Published: (2019-07-01)

Fast Patchwise Nonlocal SAR Image Despeckling Using Joint Intensity and Structure Measures
by: Dongxing Liang, et al.
Published: (2022-01-01)

Two-Dimensional Autofocus Combined With the TSA for Spotlight SAR
by: Hao Lin, et al.
Published: (2023-01-01)

Efficient autofocus of small multi-rotor UAV SAR by minimum entropy BP algorithm
by: Hao Su, et al.
Published: (2019-10-01)

Inverse synthetic aperture radar imaging: principles, algorithms, and applications/
by: 197431 Chen, Victor C., et al.
Published: (2014)

Theory of digital imaging from orbital synthetic-aperture radar /
by: 374952 Barber, B. C.

SAR image synthesis based on conditional generative adversarial networks
by: Jianyu Wang, et al.
Published: (2019-09-01)

Analysis of interferometric SAR for topographic mapping /
by: 170247 Mirbagheri, Majid
Published: (2001)

A modified design method of pulse repetition frequency for synthetic aperture radar system based on the single point equivalent squint model
by: Yujie Liang, et al.
Published: (2021-07-01)

A novel TomoSAR imaging method with few observations based on nested array
by: Pengyu Jiang, et al.
Published: (2023-06-01)

Fast SAR Autofocus Based on Ensemble Convolutional Extreme Learning Machine
by: Zhi Liu, et al.
Published: (2021-07-01)

Three- and Four-Dimensional Topographic Measurement and Validation
by: Fabio Rocca, et al.
Published: (2021-07-01)

A Transformer-Based Coarse-to-Fine Wide-Swath SAR Image Registration Method under Weak Texture Conditions
by: Yibo Fan, et al.
Published: (2022-02-01)

Accelerated Sparse Microwave Imaging Phase Error Compensation Algorithm Based on Combination of SAR Raw Data Simulator and Map-drift Autofocus Algorithm
by: Zhang Zhe, et al.
Published: (2016-02-01)

Short‐range SAR imaging with a fast adaptive plug‐and‐play ADMM‐based approach
by: The Hien Pham, et al.
Published: (2024-02-01)

Azimuth apodization for autoregressive synthetic‐aperture radar imaging
by: Guo Zhang, et al.
Published: (2021-11-01)

A New Classification Approach with Deep Mask R-CNN for Synthetic Aperture Radar Image Segmentation
by: Ridvan Yayla, et al.
Published: (2020-12-01)

Circular SAR imaging algorithm based on polar format algorithm for moving target
by: Zhou Wang, et al.
Published: (2019-07-01)

A Robust Track Estimation Method for Airborne SAR Based on Weak Navigation Information and Additional Envelope Errors
by: Ming Gao, et al.
Published: (2024-02-01)