Share Email Print
cover

Proceedings Paper

Phase and frequency stability for synthetic aperture LADAR
Author(s): Thomas J. Karr; John H. Glezen; Henry E. Lee
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

We analyze the phase and frequency stability requirements of the optical phase reference in a synthetic aperture LADAR imager. There are three distinct frequency regions: (a) "low" frequencies, below the characteristic frequency of the coherent synthetic aperture; (b) "mid" frequencies, up to four times the characteristic frequency of the coherent synthetic aperture; and (c) "high" frequencies, up to and beyond the pulse repetition frequency. The low-frequency requirement is driven by the allowable quadratic phase error, related to the resolution of the impulse response. Mid- and high-frequency requirements are driven by the allowable peak and integrated sidelobe levels. We estimate the upper bound and average PSDs required of the reference oscillator, parametrized by imaging geometry variables such as range, wavelength and synthetic resolution.

Paper Details

Date Published: 26 September 2007
PDF: 6 pages
Proc. SPIE 6712, Unconventional Imaging III, 671202 (26 September 2007); doi: 10.1117/12.729482
Show Author Affiliations
Thomas J. Karr, Northrop Grumman Electronic Systems (United States)
John H. Glezen, Northrop Grumman Electronic Systems (United States)
Henry E. Lee, Northrop Grumman Electronic Systems (United States)


Published in SPIE Proceedings Vol. 6712:
Unconventional Imaging III
Jean J. Dolne; Victor L. Gamiz; Paul S. Idell, Editor(s)

© SPIE. Terms of Use
Back to Top