Differential Optical Synthetic Aperture Radar
Abstract
A new differential technique for forming optical images using a synthetic aperture is introduced. This differential technique utilizes a single aperture to obtain unique (N) phases that can be processed to produce a synthetic aperture image at points along a trajectory. This is accomplished by dividing the aperture into two equal "subapertures", each having a width that is less than the actual aperture, along the direction of flight. As the platform flies along a given trajectory, a source illuminates objects and the two subapertures are configured to collect return signals. The techniques of the invention is designed to cancel common-mode errors, trajectory deviations from a straight line, and laser phase noise to provide the set of resultant (N) phases that can produce an image having a spatial resolution corresponding to a synthetic aperture.
- Inventors:
-
- San Ramon, CA
- Issue Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- OSTI Identifier:
- 879984
- Patent Number(s):
- 6879279
- Application Number:
- 10/402053
- Assignee:
- The Regents of the University of California (Oakland, CA)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01S - RADIO DIRECTION-FINDING
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Stappaerts, Eddy A. Differential Optical Synthetic Aperture Radar. United States: N. p., 2005.
Web.
Stappaerts, Eddy A. Differential Optical Synthetic Aperture Radar. United States.
Stappaerts, Eddy A. Tue .
"Differential Optical Synthetic Aperture Radar". United States. https://www.osti.gov/servlets/purl/879984.
@article{osti_879984,
title = {Differential Optical Synthetic Aperture Radar},
author = {Stappaerts, Eddy A},
abstractNote = {A new differential technique for forming optical images using a synthetic aperture is introduced. This differential technique utilizes a single aperture to obtain unique (N) phases that can be processed to produce a synthetic aperture image at points along a trajectory. This is accomplished by dividing the aperture into two equal "subapertures", each having a width that is less than the actual aperture, along the direction of flight. As the platform flies along a given trajectory, a source illuminates objects and the two subapertures are configured to collect return signals. The techniques of the invention is designed to cancel common-mode errors, trajectory deviations from a straight line, and laser phase noise to provide the set of resultant (N) phases that can produce an image having a spatial resolution corresponding to a synthetic aperture.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Apr 12 00:00:00 EDT 2005},
month = {Tue Apr 12 00:00:00 EDT 2005}
}
Works referenced in this record:
Design of sparse array imaging systems
conference, January 1995
- Lockwood, G. R.; Foster, F. S.
- 1995 IEEE Ultrasonics Symposium. An International Symposium, 1995 IEEE Ultrasonics Symposium. Proceedings. An International Symposium
Synthetic-aperture experiment in the visible with on-axis digital heterodyne holography
journal, January 2001
- Le Clerc, F.; Gross, M.; Collot, L.
- Optics Letters, Vol. 26, Issue 20