Three-dimensional SAR from curvilinear apertures

Kenneth Knaell

doi:10.1117/12.177199

9 June 1994 Three-dimensional SAR from curvilinear apertures

Kenneth Knaell

Proceedings Volume 2230, Algorithms for Synthetic Aperture Radar Imagery; (1994) https://doi.org/10.1117/12.177199
Event: SPIE's International Symposium on Optical Engineering and Photonics in Aerospace Sensing, 1994, Orlando, FL, United States

Abstract

The 3D information content in data taken from a curved SAR aperture path is significant if sizable areas are produced when the data are projected in three orthogonal directions. Such an undersampled data space does not generate visually acceptable 3D images by straight forward Fourier transformation however. The high sidelobes present in such images may be larger than the main response of other significant scatterers thus veiling their appearance. Also such sidelobes block visual lines of sight to remote scatterers for all but very simple images. A coherent adaptation of the CLEAN algorithm is shown to be effective in eliminating sidelobes in such images allowing the target to be effectively visualized in 3D. Clean images of a target consisting of eight corner reflectors show moderate dependence upon aperture subsets taken from a parent dataset. The algorithm appeared to work well to the limits of the dynamic range of the data set. Initial results indicate the possibility of forming high resolution 3D images of targets from SAR data taken along curvilinear aperture paths in operational situations.

Citation Download Citation

Kenneth Knaell "Three-dimensional SAR from curvilinear apertures", Proc. SPIE 2230, Algorithms for Synthetic Aperture Radar Imagery, (9 June 1994); https://doi.org/10.1117/12.177199

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available