Results 271 to 280 of about 2,045,084 (313)

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

A visualization method for SAR images

2011 IEEE International Geoscience and Remote Sensing Symposium, 2011
Visual interpretation of SAR images plays a critical role in remote sensing applications. For rapidly obtaining the image suitable for human observation, a new method of visualization for SAR images is proposed in this paper. The statistics of the SAR data, including the single channel data intensity and the span of the Pol-SAR data, are derived.
Guangyi Zhou, Wentao An, Jian Yang 0011, Hua Zhong   +3 more
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Polarimetric SAR Image Factorization

IEEE Transactions on Geoscience and Remote Sensing, 2017
This paper reformulates the problem of polarimetric incoherent target decomposition as a general image factorization which aims to simultaneously estimate a dictionary of meaningful atom scatterers and their corresponding spatial distribution maps.
Feng Xu 0001, Qian Song, Ya-Qiu Jin
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Polarimetric discriminators for SAR images

IEEE Transactions on Geoscience and Remote Sensing, 1992
A method is developed for optimizing the degree of polarization of a partially polarized wave reflected by a nonstationary scattering object. The method permits, for a scattered wave and a given target characterized by its Mueller matrix, analytic computation of the maximum and minimum values of the degree of polarization, and the corresponding ...
Ridha Touzi, Stéphane Goze, Thuy Le Toan, Armand Lopès, Eric Mougin   +4 more
openaire   +2 more sources

Parallel Sar Image Enhancement

The International Journal of Supercomputer Applications and High Performance Computing, 1997
Synthetic aperture radar (SAR) offers the possibility of imaging the earth's surface independent of time of day or weather conditions. SAR images differ from optical images in that they contain speckle, multiplicative noise with a poor signal-to-noise ratio of about 1 to 1.
Cliff A. Addison, Enrico Appiani, R. Cook, Marco Corvi, G. Howard, B. Stephens   +5 more
openaire   +1 more source

Multitemporal SAR image compression

Proceedings 1998 International Conference on Image Processing. ICIP98 (Cat. No.98CB36269), 2002
In this paper, we propose a new method for compressing with loss temporal series of SAR images. The algorithm requires a reference scene used as an input in the compression process. The compression is achieved through affine transformations, comparable to the ones used in fractal coding, but applied here in a non-convergent way.
Grégoire Mercier, Marie-Catherine Mouchot, Guy Cazuguel   +2 more
openaire   +1 more source

Image processing for multitemporal SAR images.

1998
In 1996, the French research group ISIS* proposed a research initiative in the field of radar imaging. One purpose aims to study specificities of multitemporal SAR (synthetic Aperture Radar) images. This paper presents some results of research undertaken in the multitemporal workgroup.
Huot, Etienne, Rudant, Jean-Paul, Classeau, Nicholas, Flasque, B., Guilope, P., Herlin, Isabelle, Sigelle, Marc, Stroobants, W.   +7 more
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Filtering of multichannel SAR images

IEEE Transactions on Geoscience and Remote Sensing, 2001
An explicit form of the linear multichannel synthetic aperture radar (SAR) intensity filter, which preserves radiometry while optimally reducing speckle is derived, together with a compact expression for the theoretical gain in equivalent numbers of looks (ENLs).
Shaun Quegan, Jiong Jiong Yu
openaire   +2 more sources

Research on Bistatic SAR Imaging

2006 IEEE International Symposium on Geoscience and Remote Sensing, 2006
For reasons of stealth and other operational advantages, more attention has recently been focused on bistatic SAR Bistatic SAR uses separated transmitter and receiver flying on different platforms, and has the ability of the exploitation of additional information contained in the bistatic reflectivity of targets.
Zhenbo Zhu, Ziyue Tang, Xingzhou Jiang
openaire   +2 more sources

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