Cart (Loading....) | Create Account
Close category search window

The panchromatic principle in optical filtering

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

1 Author(s)

The panchromatic optical correlator is a coherent correlator which uses a slightly broadened light spectrum to correlate simultaneously a number of receiver channels against a continuous range of Doppler distortions of the transmitted signal. The relation between spatial frequencyomega_{x}and aperture distancexin a coherent optical correlator isomega_{x} = - 2 pi x/ lambda f, whereinlambdais the light wavelength andfis the lens focal length. Since signals reflected from a target moving with uniform radial velocity undergo a scale factor adjustment of the signal spectrum, the Doppler distortions resulting from target motion can be simulated by a range oflambda. The panchromatic correlator is actually a superposition of many monochromatic correlators with eachlambdacorresponding to a particular Doppler distortion. The correlator output can be color separated by a prism to resolve Doppler information, or left unresolved to provide a Doppler invariant correlation regardless of the invariance properties of the chosen signal. Inserting a diffraction grating in the proper aperture changes the relation above toomega_{x} = -2 pi x/ lambda f - omega_{h}, whereomega_{h}is a frequency shift. This form permits correlation against a Doppler-distorted signal, heterodyned an amountomega_{h}to use the time-bandwidth product of the correlator more efficiently.

Published in:

Information Theory, IEEE Transactions on  (Volume:10 ,  Issue: 3 )

Date of Publication:

Jul 1964

Need Help?

IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.