Results 31 to 40 of about 80,473 (247)

Multiple feature-enhanced synthetic aperture radar imaging [PDF]

open access: yes, 2009
Non-quadratic regularization based image formation is a recently proposed framework for feature-enhanced radar imaging. Specific image formation techniques in this framework have so far focused on enhancing one type of feature, such as strong point ...
Cetin, Mujdat   +3 more
core   +1 more source

Proposed satellite position determination systems and techniques for Geostationary Synthetic Aperture Radar [PDF]

open access: yes, 2016
This paper proposes two different calibration techniques for Geostationary Synthetic Aperture Radar (GEOSAR) missions requiring a high precision positioning, based on Active Radar Calibrators and Ground Based Interferometry.
Broquetas Ibars, Antoni   +3 more
core   +2 more sources

Some thoughts on the use of InSAR data to constrain models of surface deformation: Noise structure and data downsampling [PDF]

open access: yes, 2005
Repeat-pass Interferometric Synthetic Aperture Radar (InSAR) provides spatially dense maps of surface deformation with potentially tens of millions of data points. Here we estimate the actual covariance structure of noise in InSAR data.
Lohman, Rowena B., Simons, Mark
core   +2 more sources

A nonquadratic regularization-based technique for joint SAR imaging and model error correction [PDF]

open access: yes, 2008
Regularization based image reconstruction algorithms have successfully been applied to the synthetic aperture radar (SAR) imaging problem. Such algorithms assume that the mathematical model of the imaging system is perfectly known.
Cetin, Mujdat   +3 more
core   +1 more source

Multiple feature-enhanced SAR imaging using sparsity in combined dictionaries [PDF]

open access: yes, 2012
Nonquadratic regularization-based image formation is a recently proposed framework for feature-enhanced radar imaging. Specific image formation techniques in this framework have so far focused on enhancing one type of feature, such as strong point ...
Cetin, Mujdat   +3 more
core   +2 more sources

Sparse representation-based synthetic aperture radar imaging [PDF]

open access: yes, 2011
There is increasing interest in using synthetic aperture radar (SAR) images in automated target recognition and decision-making tasks. The success of such tasks depends on how well the reconstructed SAR images exhibit certain features of the underlying ...
Cetin, Mujdat   +3 more
core   +1 more source

Accelerated translational motion compensation with contrast maximisation optimisation algorithm for inverse synthetic aperture radar imaging

open access: yesIET radar, sonar & navigation, 2019
Range alignment of traditional translational motion compensation for inverse synthetic aperture radar imaging generally cannot be implemented accurately under low signal-to-noise ratio, resulting in the following phase adjustment invalid.
Shuai Shao   +3 more
semanticscholar   +1 more source

Experimental Synthetic Aperture Radar with Dynamic Metasurfaces

open access: yes, 2017
We investigate the use of a dynamic metasurface as the transmitting antenna for a synthetic aperture radar (SAR) imaging system. The dynamic metasurface consists of a one-dimensional microstrip waveguide with complementary electric resonator (cELC ...
Boyarsky, Michael   +6 more
core   +2 more sources

FMCW rail-mounted SAR: Porting spotlight SAR imaging from MATLAB to FPGA [PDF]

open access: yes, 2014
In this work, a low-cost laptop-based radar platform derived from the MIT open courseware has been implemented. It can perform ranging, Doppler measurement and SAR imaging using MATLAB as the processor.
Gray, D., Le Kernec, J., Melnikov, A.
core   +1 more source

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