Results 311 to 320 of about 9,215,645 (352)

Multichannel LEO SAR Imaging with GEO SAR Illuminator

2020 IEEE 11th Sensor Array and Multichannel Signal Processing Workshop (SAM), 2020
Low-earth-orbit (LEO) synthetic aperture radar (SAR) can achieve advanced remote sensing applications benefiting from the large beam coverage and long duration time of interested area provided by a geosynchronous (GEO) SAR illuminator. In this paper, an imaging method for GEO-LEO SAR is proposed.
Junjie Wu 0001, Hongyang An, Zhichao Sun 0001, Jianyu Yang 0001   +3 more
openaire   +2 more sources

High-Resolution and Wide-Swath SAR Imaging via Poisson Disk Sampling and Iterative Shrinkage Thresholding

IEEE Transactions on Geoscience and Remote Sensing, 2019
Since the width of range swath of synthetic aperture radar (SAR) is restricted by the pulse repetition frequency, there exists a tradeoff between the azimuth resolution and the range swath width. As a result, conventional SAR imaging methods based on the
Xiaoyu Yang, Gang Li, Jinping Sun, Y. Liu, Xiang-Gen Xia   +4 more
semanticscholar   +1 more source

Passive SAR imaging using DVB‐T illumination for airborne applications

IET radar, sonar & navigation, 2019
This study presents recent research results obtained by the Warsaw University of Technology, Poland in airborne passive synthetic aperture radar (SAR) imaging using digital video broadcasting-terrestrial illumination. The main goal of the research was to
D. Gromek, K. Radecki, J. Drozdowicz, P. Samczyński, J. Szabatin   +4 more
semanticscholar   +1 more source

Complex-Image-Based Sparse SAR Imaging and its Equivalence

IEEE Transactions on Geoscience and Remote Sensing, 2018
Using sparse signal processing to replace matched filtering (MF) in synthetic aperture radar (SAR) imaging has shown significant potential to improve image quality.
H. Bi, Guoan Bi, Bingchen Zhang, W. Hong
semanticscholar   +1 more source

Geometrical SAR image registration

IEEE Transactions on Geoscience and Remote Sensing, 2006
Accurate subpixel registration of synthetic aperture radar (SAR) images is an issue that is again growing interest since its initial developments related to two-pass interferometry. Recent progress in coherent (multichannel) SAR processing raises the need for accurate registration of data takes acquired with large baseline spans, high temporal coverage,
Sansosti E, Berardino P, Manunta M, Serafino F, Fornaro G   +4 more
openaire   +2 more sources

Deep Despeckling of SAR Images

IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium, 2019
This paper presents despeckling of Synthetic Aperture Radar (SAR) detected data using deep convolutional networks. A discriminative model learning using a deep convolutional neural network (DCNN) was used. A DCNN was used to learn speckle statistical properties to process SAR data.
Dusan Gleich, Danijel Sipos
openaire   +2 more sources

Compressed Sensing SAR Imaging Based on Centralized Sparse Representation

IEEE Sensors Journal, 2018
Sparse representation based synthetic aperture radar (SAR) imaging approaches have shown their superior performance and great potential in compressed sensing SAR imaging field.
Jiacheng Ni, Qun Zhang, Ying Luo, Li Sun
semanticscholar   +1 more source

ON THE STABILITY OF THRESHOLDING SAR IMAGES

Pattern Recognition, 1998
We investigate the stability of iteratively thresholding images that contain spec noise distributed according to the Gamma distribution. Our analysis is first order perturbation and we supplement it with experimentation in order to identify for which ranges of parameter values that characterise the problem, the iterative scheme will converge to the ...
Maria Petrou, Andrea Matrucceli
openaire   +1 more source

Efficient Interpolation of SAR Images for Coregistration in SAR Interferometry

IEEE Geoscience and Remote Sensing Letters, 2007
An efficient polynomial interpolation method is proposed to reduce the computational burden of the coregistration of synthetic aperture radar images in interferometric processing. The method can be viewed as an application of the Farrow interpolator technique and requires a series of 2-D fast Fourier transforms (FFTs).
Jesus Selva, Juan M. Lopez-Sanchez
openaire   +1 more source

Joint SAR Imaging and Multi-Feature Decomposition From 2-D Under-Sampled Data Via Low-Rankness Plus Sparsity Priors

IEEE Transactions on Computational Imaging, 2019
In this paper, we introduce a multi-feature decomposition approach to the problem of synthetic aperture radar (SAR) image reconstruction from under-sampled data in both range and azimuth directions.
Majid Moradikia, S. Samadi, M. Çetin
semanticscholar   +1 more source