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The most unique advantage of multipass SAR interferometry (InSAR) is the retrieval of long term geophysical parameters, e.g. linear deformation rates, over large areas. Recently, an object-based multipass InSAR framework has been proposed…

图像与视频处理 · 电气工程与系统科学 2018-07-04 Jian Kang , Yuanyuan Wang , Michael Schmitt , Xiao Xiang Zhu

An important property of the phaseless far field patterns with incident plane waves is the translation invariance. Thus it is impossible to reconstruct the location of the underlying scatterers. By adding a reference point scatterer into…

偏微分方程分析 · 数学 2018-08-08 Xia Ji , Xiaodong Liu , Bo Zhang

X-ray scattering patterns from emerging single particle experiments have commonly many missing or contaminated pixels. This complicates different analyses including projections on Fourier or other basis functions (for noise suppression,…

数据分析、统计与概率 · 物理学 2014-11-19 Aliakbar Jafarpour

Spectral methods have greatly advanced the estimation of latent variable models, generating a sequence of novel and efficient algorithms with strong theoretical guarantees. However, current spectral algorithms are largely restricted to…

机器学习 · 计算机科学 2013-12-10 Le Song , Animashree Anandkumar , Bo Dai , Bo Xie

Current deep learning-based object detection for Synthetic Aperture Radar (SAR) imagery mainly adopts optical image methods, treating targets as texture patches while ignoring inherent electromagnetic scattering mechanisms. Though…

计算机视觉与模式识别 · 计算机科学 2026-03-17 Jiacheng Chen , Yuxuan Xiong , Haipeng Wang

Our aim is to evaluate fundamental parameters from the analysis of the electromagnetic spectra of stars. We may use $10^3$-$10^5$ spectra; each spectrum being a vector with $10^2$-$10^4$ coordinates. We thus face the so-called "curse of…

天体物理仪器与方法 · 物理学 2017-06-08 V. Watson , JF. Trouilhet , F. Paletou , S. Girard

Sparse principal component analysis (sparse PCA) is a widely used technique for dimensionality reduction in multivariate analysis, addressing two key limitations of standard PCA. First, sparse PCA can be implemented in high-dimensional low…

统计方法学 · 统计学 2025-10-07 Jan O. Bauer

Synthetic aperture radar (SAR) can measure the phase with antenna and microwave, which cannot be directly extended to visible light imaging due to phase lost. In this letter, we reported an active remote sensing with visible light via…

光学 · 物理学 2022-04-26 Meng Xiang , An Pan , Yiyi Zhao , Xuewu Fan , Hui Zhao , Chuang Li , Baoli Yao

Distinguishing between the instantaneous and delayed scatterers in synthetic aperture radar (SAR) images is important for target identification and characterization. To perform this task, one can use the autocorrelation analysis of…

图像与视频处理 · 电气工程与系统科学 2019-09-24 Mikhail Gilman , Semyon Tsynkov

Radars provide robust perception of vehicle surroundings by effectively functioning in poor light and adverse weather conditions. Synthetic aperture radar (SAR) algorithms are employed to address the limited angular resolution of radars by…

信号处理 · 电气工程与系统科学 2026-03-10 S. Hamed Javadi , André Bourdoux , Adnan Albaba , Hichem Sahli

In this work, we consider the application of model-based deep learning in nonlinear principal component analysis (PCA). Inspired by the deep unfolding methodology, we propose a task-based deep learning approach, referred to as Deep-RLS,…

信号处理 · 电气工程与系统科学 2020-11-19 Zahra Esmaeilbeig , Shahin Khobahi , Mojtaba Soltanalian

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…

信号处理 · 电气工程与系统科学 2022-10-07 Xu Zhan , Xiaoling Zhang , Shunjun Wei , Jun Shi

An innovative 3-D radar imaging technique is developed for fast and efficient identification and characterization of radar backscattering components of complex objects, when the collected scattered field is made of polarization-diverse…

信息论 · 计算机科学 2015-06-25 Pierre Minvielle , Pierre Massaloux , Jean-François Giovannelli

Through-wall synthetic aperture radar (SAR) imaging is of significant interest for security purposes, in particular when using multi-static SAR systems consisting of multiple distributed radar transmitters and receivers to improve…

数值分析 · 数学 2024-10-30 Francis Watson , Daniel Andre , William Robert Breckon Lionheart

The joint interpretation of very high resolution SAR and optical images in dense urban area are not trivial due to the distinct imaging geometry of the two types of images. Especially, the inevitable layover caused by the side-looking SAR…

信号处理 · 电气工程与系统科学 2018-01-24 Yuanyuan Wang , Xiao Xiang Zhu

Polarimetric synthetic aperture radar (PolSAR) has achieved a prominent position as a remote imaging method. However, PolSAR images are contaminated by speckle noise due to the coherent illumination employed during the data acquisition.…

We address the issue of edge detection in Synthetic Aperture Radar imagery. In particular, we propose nonparametric methods for edge detection, and numerically compare them to an alternative method that has been recently proposed in the…

应用统计 · 统计学 2012-08-30 Edwin Girón , Alejandro C. Frery , Francisco Cribari-Neto

This paper offers a new technique of incoherent scattering signal processing. The technique is based on the experimentally observed comb structure of the spectral power of separate realizations. The technique implies determining the…

大气与海洋物理 · 物理学 2007-05-23 Oleg I. Berngardt , Boris G. Shpynev

We propose and demonstrate a new imaging technique to noninvasively see through scattering layers with the aid of a spatial light modulator (SLM). A relay system projects the incoherent light pattern emitting from the scattering layer onto…

光学 · 物理学 2019-05-30 Saswata Mukherjee , A. Vijayakumar , Joseph Rosen

We are focused on improving the resolution of images of moving targets in Inverse Synthetic Aperture Radar (ISAR) imaging. This could be achieved by recovering the scattering points of a target that have stronger reflections than other…

信号处理 · 电气工程与系统科学 2022-11-15 Mohammad Roueinfar , Mohammad Hossein Kahaei