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Acousto-Optical Time-and-Space Integrating Processors for Real-Time Synthetic Aperture Radar Imaging

Citation

Haney, Michael William (1986) Acousto-Optical Time-and-Space Integrating Processors for Real-Time Synthetic Aperture Radar Imaging. Dissertation (Ph.D.), California Institute of Technology. http://resolver.caltech.edu/CaltechETD:etd-03192008-121641

Abstract

Acousto-optical processors for Synthetic Aperture Radar (SAR) imaging are presented. The new processors produce images at real-time rates by combining the operations of data collection, storage, and processing into a compact time-and-space integrating (TSI) architecture. In the TSI approach the 2-D SAR imaging problem is decomposed into a cascade of 2 distinct operations: a 1-D spatial integration of light for range compression, and a 1-D temporal integration of light for azimuth compression. These two operations are coupled via a common path interferometric scheme that is insensitive to mechanical vibrations.

The results of an experimental characterization of the TSI approach, with simulated point scatterer radar echoes, are reported. The performance issues of interferometric bias removal, dynamic range, and resolution are addressed. The architecture is generalized to correct for range migration and the results of a range walk compensation experiment are presented. A programmable version of the TSI architecture, in which the fixed azimuth reference mask is replaced by an acousto-optic light modulator, is described. The application of the programmable architecture to both strip-map and spot-light mode SAR is analyzed and experimentally verified.

Item Type:Thesis (Dissertation (Ph.D.))
Subject Keywords:Electrical Engineering
Degree Grantor:California Institute of Technology
Division:Engineering and Applied Science
Major Option:Electrical Engineering
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Psaltis, Demetri
Thesis Committee:
  • Psaltis, Demetri (chair)
  • Elachi, Charles
  • Masson, Colin R.
  • Posner, Edward C.
  • Rutledge, David B.
  • Vaidyanathan, Palghat P.
Defense Date:3 February 1986
Funders:
Funding AgencyGrant Number
General DynamicsUNSPECIFIED
NASAUNSPECIFIED
Record Number:CaltechETD:etd-03192008-121641
Persistent URL:http://resolver.caltech.edu/CaltechETD:etd-03192008-121641
Related URLs:
URLURL TypeDescription
https://doi.org/10.1364/ao.24.001926DOIArticle adapted for portion of thesis.
https://doi.org/10.1117/12.948364DOIArticle adapted for portion of thesis.
https://doi.org/10.1117/12.944026DOIArticle adapted for portion of thesis.
https://doi.org/10.1117/12.936153DOIArticle adapted for portion of thesis.
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:1020
Collection:CaltechTHESIS
Deposited By: Imported from ETD-db
Deposited On:03 Apr 2008
Last Modified:14 May 2019 17:56

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