NDLI: Simulation of synthetic aperture radar imaging of dynamic wakes of submerged body

Content Provider	IET Digital Library
Author	Liu, Peng Jin, Ya Qiu
Abstract	Simulation of the wakes excited by a submerged body in high-resolution synthetic aperture radar (SAR) imaging is presented. The hydrodynamic model consists of two sets of ocean dynamics closely relevant to SAR imaging, namely time evolution of the wake and wind waves, and orbital motion of Bragg waves riding on them. For the wake, the orbital motion is reconstructed through a least square-based solution from the known elevation map. Time domain backscattering from the electrically very large ocean scenario is computed by a quasi-stationary algorithm, in which a physical optics phase correction of the two-scale model is proposed to take account the Doppler effects caused by wave orbital motions. SAR images of the wake are simulated as a function of the size, speed and depth of the submerged body, in which a range of wake features are observed, such as azimuth displacement, velocity bunching and smearing. This work might provide insights into the feasibility of using a SAR sensor to detect the wakes of a submerged body.
Starting Page	481
Ending Page	489
Page Count	9
ISSN	17518784
Volume Number	11
e-ISSN	17518792
Issue Number	Issue 3, Mar (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rsn/11/3
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rsn.2016.0297
Journal	IET Radar, Sonar & Navigation
Publisher Date	2016-10-11
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Backscatter Bragg Waves Orbital Motion Doppler Effect Doppler Effects Dynamic Wakes Electromagnetic Wave Propagation High-resolution SAR Imaging Hydrodynamic Model Hydrodynamic Model (elementary Particle) Interpolation And Function Approximation Least Square Based Solution Least Squares Approximation Numerical Analysis Ocean Dynamics Optical, Image And Video Signal Processing Physical Optics Physical Optics Phase Correction Quasistationary Algorithm Radar Equipment Radar Imaging Radar Receiver Radar Theory Submerged Body Synthetic Aperture Radar Synthetic Aperture Radar Image System And Application Time Domain Backscattering Wake Wave Wind Wave
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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