Analysis of foliage-induced azimuthal synthetic pattern distortions

Michael F. Toups

doi:10.1117/12.59022

12 May 1992 Analysis of foliage-induced azimuthal synthetic pattern distortions

Michael F. Toups

Proceedings Volume 1630, Synthetic Aperture Radar; (1992) https://doi.org/10.1117/12.59022
Event: OE/LASE '92, 1992, Los Angeles, CA, United States

Abstract

Phase and amplitude fluctuations induced by wave propagation through foliage limit the ability of a synthetic aperture radar (SAR.) system to image a target under foliage. One-way measurements of these fluctuations were done using the NASA/JPL C-, L-, UHF band SAR during the Lincoln Laboratory July 1990 Foliage Penetration Experiment. In this experiment, single-frequency CW signal sources, “tone generators,” were placed in the open and under foliage in order to measure one-way propagation. Three tone generator sites located under trees and one tone generator site in the open were utilized. Tone generators at the open site were used as controls. At each site, six tone generators were deployed, one for each frequency and polarization utilized by the NASA/JPL SAR system. The statistical properties of the phase and amplitude fluctuations induced by the foliage are determined for each tone generator site, frequency, and polarization. The effect of these amplitude and phase fluctuations on the ability of a SAR system to image a target obscured by foliage is shown. These results are compared with the measured ground truth for each tone generator site. The ground truth measured during the experiment includes foliage densities, moisture contents, and permittivities.

Citation Download Citation

Michael F. Toups "Analysis of foliage-induced azimuthal synthetic pattern distortions", Proc. SPIE 1630, Synthetic Aperture Radar, (12 May 1992); https://doi.org/10.1117/12.59022

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