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This paper addresses the problem of single snapshot Direction-of-Arrival (DOA) estimation, which is of great importance in a wide-range of applications including automotive radar. A popular approach to achieving high angular resolution when…

Signal Processing · Electrical Eng. & Systems 2024-03-12 Yinyan Bu , Robin Rajamäki , Anand Dabak , Rajan Narasimha , Anil Mani , Piya Pal

Radar has become an essential sensor for autonomous navigation, especially in challenging environments where camera and LiDAR sensors fail. 4D single-chip millimeter-wave radar systems, in particular, have drawn increasing attention thanks…

Robotics · Computer Science 2025-03-18 Jingqi Jiang , Shida Xu , Kaicheng Zhang , Jiyuan Wei , Jingyang Wang , Sen Wang

Considering that Coupled Dictionary Learning (CDL) method can obtain a reasonable linear mathematical relationship between resource images, we propose a novel CDL-based Synthetic Aperture Radar (SAR) and multispectral pseudo-color fusion…

Image and Video Processing · Electrical Eng. & Systems 2023-10-17 Long Bai , Shilong Yao , Kun Gao , Yanjun Huang , Ruijie Tang , Hong Yan , Max Q. -H. Meng , Hongliang Ren

Exploring motion information is important for the motion deblurring task. Recent the window-based transformer approaches have achieved decent performance in image deblurring. Note that the motion causing blurry results is usually composed…

Computer Vision and Pattern Recognition · Computer Science 2024-05-24 Duosheng Chen , Shihao Zhou , Jinshan Pan , Jinglei Shi , Lishen Qu , Jufeng Yang

Synthetic Aperture Radar (SAR) provides all-weather, high-resolution imaging capabilities, but its unique imaging mechanism often requires expert interpretation, limiting its widespread applicability. Translating SAR images into more easily…

Computer Vision and Pattern Recognition · Computer Science 2024-07-09 Xinyu Bai , Feng Xu

Images from adaptive optics systems are generally affected by significant distortions of the point spread function (PSF) across the field of view, depending on the position of natural and artificial guide stars. Image reduction techniques…

Instrumentation and Methods for Astrophysics · Physics 2015-06-24 Andrea La Camera , Laura Schreiber , Emiliano Diolaiti , Patrizia Boccacci , Mario Bertero , Michele Bellazzini , Paolo Ciliegi

Existing Synthetic Aperture Radar (SAR) image generation methods still lack reliable controllability over key imaging parameters, particularly azimuth angle, depression angle, and polarization mode. Our preliminary GeoDiff-SAR supported…

Image and Video Processing · Electrical Eng. & Systems 2026-05-21 Xuanting Wu , Fan Zhang , Fei Ma , Yingbing Liu , Lingxiao Peng , Qiang Yin , Yongsheng Zhou

Polarimetric Synthetic Aperture Radar (PolSAR) images are establishing as an important source of information in remote sensing applications. The most complete format this type of imaging produces consists of complex-valued Hermitian…

Information Theory · Computer Science 2012-07-04 Leonardo Torres , Antonio C. Medeiros , Alejandro C. Frery

A renaissance in radar-based sensing for mobile robotic applications is underway. Compared to cameras or lidars, millimetre-wave radars have the ability to `see' through thin walls, vegetation, and adversarial weather conditions such as…

This letter proposes a synthetic aperture radar (SAR) image registration method named Feature-Area Optimization (FAO). First, the traditional area-based optimization model is reconstructed and decomposed into three key but uncertain…

Computer Vision and Pattern Recognition · Computer Science 2016-02-19 Fuqiang Liu , Fukun Bi , Liang Chen , Hao Shi , Wei Liu

Despite the advantages of all-weather and all-day high-resolution imaging, SAR remote sensing images are much less viewed and used by general people because human vision is not adapted to microwave scattering phenomenon. However, expert…

Computer Vision and Pattern Recognition · Computer Science 2019-01-15 Shilei Fu , Feng Xu , Ya-Qiu Jin

To relieve the interference caused by range-Doppler sidelobes in pulsed radars, we propose a new method to construct Doppler resilient complementary waveforms based on Golay codes. We design both the transmit pulse train and the receive…

Signal Processing · Electrical Eng. & Systems 2020-08-26 Zhong-Jie Wu , Chen-Xu Wang , Pei-He Jiang , Zhi-Quan Zhou

This paper presents a follow-up to previous work on correcting PSF-induced Doppler artifacts in observations by the SPICE spectrograph on Solar Orbiter. In a previous paper, we demonstrated correction of these artifacts in the $y-\lambda$…

Solar and Stellar Astrophysics · Physics 2026-02-11 J. E. Plowman , D. M. Hassler , M. E. Molnar , A. K. Shrivastav , T. Varesano , F. Auchère , A. Fludra , T. A. Kucera , T. J. Wang , Y. Zhu

The extension to millimeter-wave (mmWave) spectrum of communication frequency band makes it easy to implement a joint radar and communication system using single hardware. In this paper, we propose radar imaging based on the IEEE 802.11ad…

Information Theory · Computer Science 2022-06-28 Geonho Han , Junil Choi

Rotating synthetic aperture (RSA) imaging system captures images of the target scene at different rotation angles by rotating a rectangular aperture. Deblurring acquired RSA images plays a critical role in reconstructing a latent sharp…

Methodology · Statistics 2025-02-03 Dao Lin , Jian Zhang , Martin Benning

Synthetic aperture radar technology is crucial for high-resolution imaging under various conditions; however, the acquisition of real-world synthetic aperture radar data for deep learning-based automatic target recognition remains…

Computer Vision and Pattern Recognition · Computer Science 2024-09-24 Minjun Kim , Ohtae Jang , Haekang Song , Heesub Shin , Jaewoo Ok , Minyoung Back , Jaehyuk Youn , Sungho Kim

Interferometric Synthetic Aperture Radar (InSAR) Imaging methods are usually based on algorithms of match-filtering type, without considering the scene's characteristic, which causes limited imaging quality. Besides, post-processing steps…

Signal Processing · Electrical Eng. & Systems 2022-10-07 Xu Zhan , Xiaoling Zhang , Shunjun Wei , Jun Shi

Radiance fields have been a major breakthrough in the field of inverse rendering, novel view synthesis and 3D modeling of complex scenes from multi-view image collections. Since their introduction, it was shown that they could be extended…

Computer Vision and Pattern Recognition · Computer Science 2023-12-21 Thibaud Ehret , Roger Marí , Dawa Derksen , Nicolas Gasnier , Gabriele Facciolo

We consider the inverse problem of fitting atmospheric dispersion parameters based on time-resolved back-scattered differential absorption Lidar (DIAL) measurements. The obvious advantage of light-based remote sensing modalities is their…

Analysis of PDEs · Mathematics 2023-08-01 Robert Lung , Nick Polydorides

We study synthetic aperture radar (SAR) imaging and motion estimation of complex scenes consisting of stationary and moving targets. We use the classic SAR setup with a single antenna emitting signals and receiving the echoes from the…

Numerical Analysis · Mathematics 2015-06-11 Liliana Borcea , Thomas Callaghan , George Papanicolaou
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