A Discussion of Digital Processing in Synthetic Aperture Radar

Kirk, John C.

doi:10.1109/taes.1975.308082

Cited by 60 publications

(11 citation statements)

References 27 publications

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“…Kirk, 1975). Rather than creating a maximum-length synthetic aperture, more attractive images can be obtained by synthesizing images from smaller subapertures, each with a different target aspect.…”

Section: Vl Resultsmentioning

confidence: 99%

Test results using a prototype synthetic aperture sonar

Gough

Hayes

1989

The Journal of the Acoustical Society of America

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In this paper, the operation is described of a prototype coherent synthetic aperture sonar (SAS) based on continuous transmission frequency modulation that covers a 1-octave bandwidth. Images calculated from real data (collected from a sonar range in Loch Linnhe, Scotland) show that it is now possible to produce high-quality images of the seafloor at realistic mapping rates. An air-filled steel buoy was used as a test target, and several images are shown of this target using a variety of reconstruction algorithms.

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Section: Vl Resultsmentioning

confidence: 99%

Test results using a prototype synthetic aperture sonar

Gough

Hayes

1989

The Journal of the Acoustical Society of America

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“…Another application is battlefield surveillance in which a helicopter or remotely piloted vehicle pops up for a quick look behind enemy lines [6], [7]. In applications such as these, it is common to discard a good deal of the available data through the process of presumming [25], i.e., a low-pass filtering operation in which the Doppler bandwidth is effectively reduced. This also effectively reduces the beamwidth of the antenna so that the illuminated spot need not be defined by the actual antenna beam.…”

Section: Problem Statementmentioning

confidence: 99%

Tomographic Processing of Synthetic Aperture Radar Signals for Enhanced Resolution

Bauck¹

2019

Preprint

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Spotlight-mode synthetic aperture radar imaging is studied from the viewpoint of tomographic signal processing which allows the relaxation of the nearly-universal assumption that plane waves pass over the ground patch. This allows high-quality image reconstruction in the face of arbitrary amounts of wavefront curvature such as would be present when the angle subtended by the ground patch, as seen by the radar, is not small. One such application is wide-area surveillance. A meth- odology is used which has the benefits of a wideband transmitted signal (impulse) and a sensible simulation. Image reconstruction algorithms are developed for monostatic and bistatic systems. Simulation results using these algorithms compare favorably with baseline simulations which use a more conventional algorithm operating on data which do not embody the effects of wavefront curvature. Comments on system design and computational implementation are made as necessary. A new set of problems which appear to benefit from the tomographic viewpoint is posed. This work may also find applications in some forms of reflection tomography.

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“…Both the system structure and echo model of spotlight-mode SAR is slightly different from that of stripmap-mode SAR, but both of them are of great importance in remote sensing. Since the establishment of spotlight-mode SAR concept, many researchers have proposed many advanced structure of systems, special digital processing and innovative imaging algorithms for it [6,7,8]. Spotlight-mode SAR finds its position in synthetic aperture radar family and becomes a mainstream remote sensing method.…”

Section: Spotlight Sar Echo Modelmentioning

confidence: 99%

SAR echo simulation from numerous scattering cells based on GPU

Song

Zhou

Wang

et al. 2013

IET International Radar Conference 2013

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A comprehensive and novel SAR echo simulation method for a great deal of scattering cells is presented in this paper. In order to greatly reduce the processing time, we apply the Graphics Processing Units (GPU). Modern GPUs are very efficient at manipulating computer graphics, and their highly parallel structure makes them more effective than generalpurpose CPUs in processing large blocks of data. Especially when facing the complicated scene of many scattering cells, high-speed operation in parallel based on GPU is perfectly fit. Via Compute Unified Device Architecture (CUDA), each thread of GPU is in charge of a single scattering cell, and thus this structure will highly improve the efficiency of echo simulation in complex scene.

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A Discussion of Digital Processing in Synthetic Aperture Radar

Cited by 60 publications

References 27 publications

Test results using a prototype synthetic aperture sonar

Test results using a prototype synthetic aperture sonar

Tomographic Processing of Synthetic Aperture Radar Signals for Enhanced Resolution

SAR echo simulation from numerous scattering cells based on GPU

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