Results 211 to 220 of about 35,159 (261)
Some of the next articles are maybe not open access.
Passive Synthetic Aperture Imaging
SIAM Journal on Imaging Sciences, 2015The main purpose of the paper under review is to compare the passive synthetic aperture images obtained by migration of the autocorrelation functions with the standard active synthetic aperture images. After a short description of the two imaging configurations, the authors show that image resolution in the active and passive configurations is the same,
Garnier, Josselin, Papanicolaou, George
openaire +4 more sources
Synthetic aperture radar interferometry
Inverse Problems, 1998Summary: Synthetic aperture radar (SAR) is a coherent active microwave imaging method. In remote sensing it is used for mapping the scattering properties of the Earth's surface in the respective wavelength domain. Many physical and geometric parameters of the imaged scene contribute to the grey value of a SAR image pixel.
Bamler, Richard, Hartl, Philip
openaire +3 more sources
Optics and Photonics News, 2004
So far, most of our discussion has concerned RAR, in which the antenna is a physical object that first emits, then collects the radiation. We now turn our attention to the case in which the antenna moves to cover a synthetic aperture (LSA), thus producing SAR.
Armin W. Doerry, Fred M. Dickey
openaire +2 more sources
So far, most of our discussion has concerned RAR, in which the antenna is a physical object that first emits, then collects the radiation. We now turn our attention to the case in which the antenna moves to cover a synthetic aperture (LSA), thus producing SAR.
Armin W. Doerry, Fred M. Dickey
openaire +2 more sources
1976
The previous discussions of this A.S.I. of target scattering and effects of the atmosphere upon microwave propagation are extended to the problem of imaging by synthetic aperture radar (SAR). The foundation for discussion of SAR system performance has been given by Corless [1].
S. R. Brooks +9 more
openaire +2 more sources
The previous discussions of this A.S.I. of target scattering and effects of the atmosphere upon microwave propagation are extended to the problem of imaging by synthetic aperture radar (SAR). The foundation for discussion of SAR system performance has been given by Corless [1].
S. R. Brooks +9 more
openaire +2 more sources
2003
Some of the most striking images of the earth’s surface have been made from aircraft in level flight using radar in a sophisticated modality. The foliage of trees is stripped away and the ridges and gullies of the hard surface are shown in stark relief.
Jakob J. van Zyl, Yunjin Kim
openaire +2 more sources
Some of the most striking images of the earth’s surface have been made from aircraft in level flight using radar in a sophisticated modality. The foliage of trees is stripped away and the ridges and gullies of the hard surface are shown in stark relief.
Jakob J. van Zyl, Yunjin Kim
openaire +2 more sources
Electronics & Communication Engineering Journal, 1991
A short introduction to the background and theory of synthetic aperture radar (SAR) imaging is given. Some of the key issues in SAR design are discussed and possible future developments involving SAR operation with phased arrays are suggested.
openaire +1 more source
A short introduction to the background and theory of synthetic aperture radar (SAR) imaging is given. Some of the key issues in SAR design are discussed and possible future developments involving SAR operation with phased arrays are suggested.
openaire +1 more source
2009
We describe the design and implementation of a novel SIMD data-parallel algorithm for real time SAR quick-look image generation using the Cell Broadband Engine as found in the consumer Playstation 3 gaming console. Our implementation of this chain on the CELL system processes 1 frame of image data, reading a 1024x3072 pixel of (simulated) RAW ...
openaire +2 more sources
We describe the design and implementation of a novel SIMD data-parallel algorithm for real time SAR quick-look image generation using the Cell Broadband Engine as found in the consumer Playstation 3 gaming console. Our implementation of this chain on the CELL system processes 1 frame of image data, reading a 1024x3072 pixel of (simulated) RAW ...
openaire +2 more sources
1987
High angular resolution radar imagery can be obtained using conventional non-coherent radar systems by employing a large antenna or operating at a short wavelength. Airborne platforms, however, impose severe physical limitations on the size of the antenna which can be used and still maintain acceptable flight characteristics of the aircraft. The use of
openaire +1 more source
High angular resolution radar imagery can be obtained using conventional non-coherent radar systems by employing a large antenna or operating at a short wavelength. Airborne platforms, however, impose severe physical limitations on the size of the antenna which can be used and still maintain acceptable flight characteristics of the aircraft. The use of
openaire +1 more source
Large-aperture synthetic aperture imaging ladar
Optical Engineering, 2018A strip-mode side-looking large-aperture synthetic aperture imaging ladar (SAIL) based on free-space optics is designed to experimentally verify the key performances for further airborne application. The optical difficulties in the spatial domain, including optical antenna and imaging resolution for large-aperture SAIL, are considered systematically ...
Yanan Zhi +6 more
openaire +1 more source
The Journal of the Acoustical Society of America, 1973
This letter describes the principle and the fundamental results of experiments of a synthetic aperture sonar which enables us to resolve objects both in angle and range more sharply than the conventional ultrasonic imaging system. The basic idea of this technique is to introduce pulsed waveforms to ultrasonic holography and its operations consist of ...
Takuso Sato +2 more
openaire +1 more source
This letter describes the principle and the fundamental results of experiments of a synthetic aperture sonar which enables us to resolve objects both in angle and range more sharply than the conventional ultrasonic imaging system. The basic idea of this technique is to introduce pulsed waveforms to ultrasonic holography and its operations consist of ...
Takuso Sato +2 more
openaire +1 more source