Results 91 to 100 of about 159,428 (230)

Wavelet-Based Compressed Sensing for Polarimetric SAR Tomography [PDF]

open access: yes, 2013
Tomographic synthetic aperture radar (SAR) imaging has been recently formulated in a wavelet-based compressed sensing (CS) framework. This paper reviews the underlying sparsity-driven algorithms for single-channel as well as polarimetric tomography, and ...
Nannini, Matteo   +2 more
core  

MIMO-SAR and the Orthogonality Confusion [PDF]

open access: yes, 2012
This paper reviews radar architectures that employ multiple transmit and multiple receive channels to improve the performance of synthetic aperture radar (SAR) systems.
A. Patyuchenko   +21 more
core   +1 more source

Study on the System Design Scheme for Wide-Swath Spaceborne SAR Operating in the Frequency-Scanning Mode

open access: yesIEEE Access
Utilizing the frequency-dependent beam pointing characteristics of phased array antenna, frequency scanning (F-SCAN) spaceborne SAR can realize the smooth beam scanning from the far to the near edge of the observation scene.
Haifeng Yu, Ziyan Shen, Rui Man
doaj   +1 more source

Linearity Measurements of an Accurate Transponder for Calibrating Future Spaceborne SAR Systems [PDF]

open access: yes, 2012
The requirements on new spaceborne synthetic aperture radar (SAR) missions are always pushed towards better image quality with respect to signal-to-noise ratio, radiometric accuracy, and spatial resolution.
Looser, Philipp   +3 more
core  

Airborne Synthetic Aperture Radar: Models, Focusing and Experiments [PDF]

open access: yes, 2006
Synthetic Aperture Radar (SAR) is a remote sensing technique that allows the generation of microwave images of the Earth surface, independently of weather condition and of sun illumination.
Perna, Stefano
core   +1 more source

Wavelet-Based Compressed Sensing for SAR Tomography of Forested Areas [PDF]

open access: yes, 2012
Synthetic aperture radar (SAR) tomography is a 3-D imaging modality that is commonly tackled by spectral estimation techniques. Thus, the backscattered power along the cross-range direction can be readily obtained by computing the Fourier spectrum of a ...
Nannini, Matteo   +2 more
core   +1 more source

Bistatic SAR Experiments with the TanDEM-X Constallation [PDF]

open access: yes, 2012
Launched in June 2010, TanDEM-X is an interferometric mission with the main goal of providing a high-resolution, global and unprecedentedly accurate digital elevation model (DEM) of the Earth by means of single-pass X-band SAR interferometry. Despite
Steinbrecher, Ulrich   +23 more
core   +1 more source

A Review of Spaceborne SAR Algorithm for Image Formation

open access: yesLeida xuebao, 2013
This paper firstly reviews the history and trends in development of spaceborne Synthetic Aperture Radar (SAR) satellite technology in American and European countries.
Li Chun-sheng, Yang Wei, Wang Peng-bo
doaj   +1 more source

Spatio-Temporal Matching of Moving Objects in Optical and SAR-Data [PDF]

open access: yes, 2007
We present an approach for spatio-temporal co-registration of dynamic objects in Synthetic Aperture Radar (SAR) and optical imagery. Goal of this work is the performance evaluation of vehicle detection and velocity estimation from SAR images when ...
Weihing, Diana   +3 more
core  

A Novel Frequency Scanning Variable PRI Imaging Mode for Ultrawide Continuous Swath Spaceborne SAR Imaging

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Digital beamforming (DBF) technique in elevation and variable pulse repetition interval (PRI) technique in azimuth are used to achieve ultrawide continuous swath imaging in synthetic aperture radar (SAR).
Ruizhen Song   +4 more
doaj   +1 more source

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