Results 331 to 340 of about 7,135,260 (382)
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2007 IEEE Radar Conference, 2007
We introduce a new approach to radar imaging based on the concept of compressive sensing (CS). In CS, a low-dimensional, nonadaptive, linear projection is used to acquire an efficient representation of a compressible signal directly using just a few measurements.
Richard Baraniuk, Philippe Steeghs
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We introduce a new approach to radar imaging based on the concept of compressive sensing (CS). In CS, a low-dimensional, nonadaptive, linear projection is used to acquire an efficient representation of a compressible signal directly using just a few measurements.
Richard Baraniuk, Philippe Steeghs
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Airborne Forward-Looking Radar Super-Resolution Imaging Using Iterative Adaptive Approach
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2019Airborne forward-looking radar (AFLR) imaging has raised many concerns in fields of Earth observation, independent of weather and daytime. Constrained by imaging principles, conventional high-resolution radar imaging techniques such as synthetic aperture
Yongchao Zhang +5 more
semanticscholar +1 more source
Radar Systems (RADAR 97), 1997
In this paper an algorithm based on emerging data compression techniques and suitably adapted to the radar data of a VTS (Vessel Traffic Service) System is presented. The basic idea derives from the JPEG (Joint Photographic Experts Group) standard which converts image data to a spatial frequency representation using a 2-D discrete cosine transform (DCT)
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In this paper an algorithm based on emerging data compression techniques and suitably adapted to the radar data of a VTS (Vessel Traffic Service) System is presented. The basic idea derives from the JPEG (Joint Photographic Experts Group) standard which converts image data to a spatial frequency representation using a 2-D discrete cosine transform (DCT)
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IEEE Transactions on Geoscience Electronics, 1978
A radar image simulation model, which can be used to aid interpretation of images and information extraction from images, has been developed and implemented on a digital computer. The model, called the "Point Scattering Model," is a mathematically rigorous treatment of the stochastic process described by the closed system consisting of the radar ...
Julian C. Holtzman +3 more
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A radar image simulation model, which can be used to aid interpretation of images and information extraction from images, has been developed and implemented on a digital computer. The model, called the "Point Scattering Model," is a mathematically rigorous treatment of the stochastic process described by the closed system consisting of the radar ...
Julian C. Holtzman +3 more
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Photonics Research, 2019
Photonics-based radar with a photonic de-chirp receiver has the advantages of broadband operation and real-time signal processing, but it suffers from interference from image frequencies and other undesired frequency-mixing components, due to single ...
Xingwei Ye +3 more
semanticscholar +1 more source
Photonics-based radar with a photonic de-chirp receiver has the advantages of broadband operation and real-time signal processing, but it suffers from interference from image frequencies and other undesired frequency-mixing components, due to single ...
Xingwei Ye +3 more
semanticscholar +1 more source
16th European Microwave Conference, 1986, 1986
This paper is concerned with the problem of obtaining an image by means of a spatially coherent radar signal processing. After a brief review of the above technique, the problems of motion compensation (target tracking) and of 2D-Fourier inversion, arising in practical realisations, are discussed. In addition, the possibility of extending the theory to
GCorsini +4 more
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This paper is concerned with the problem of obtaining an image by means of a spatially coherent radar signal processing. After a brief review of the above technique, the problems of motion compensation (target tracking) and of 2D-Fourier inversion, arising in practical realisations, are discussed. In addition, the possibility of extending the theory to
GCorsini +4 more
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Human Target Detection Based on FCN for Through-the-Wall Radar Imaging
IEEE Geoscience and Remote Sensing Letters, 2021Huquan Li +4 more
semanticscholar +1 more source
Science, 1976
A new radar image of Venus covering the latitude range 46° to 75° and the approximate longitude range 290° to 10° is shown. The resolution is approximately 20 kilometers.
D B, Campbell +2 more
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A new radar image of Venus covering the latitude range 46° to 75° and the approximate longitude range 290° to 10° is shown. The resolution is approximately 20 kilometers.
D B, Campbell +2 more
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International Journal of Imaging Systems and Technology, 1991
AbstractThe Seasat and Shuttle imaging radars flown in the 1970s and 1980s established a strong scientific and technical base for a number of imaging radars that are flying or under development. Recent advances in understanding wave‐surface interactions, utilization of multispectral and polarimetric data, as well as advances in microwave and electronic
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AbstractThe Seasat and Shuttle imaging radars flown in the 1970s and 1980s established a strong scientific and technical base for a number of imaging radars that are flying or under development. Recent advances in understanding wave‐surface interactions, utilization of multispectral and polarimetric data, as well as advances in microwave and electronic
openaire +1 more source