Field Imaging Radar/Lidar Through Fourier Transform Heterodyne

Local PDF: ADA390323.pdf

AD Number: ADA390323
Subject Categories: ACTIVE & PASSIVE RADAR DETECTION & EQUIPMENT
Corporate Author: LOS ALAMOS NATIONAL LAB NM
Title: Field Imaging Radar/Lidar Through Fourier Transform Heterodyne
Personal Authors: Cook, Bradly J.; Galbraith, Amy E.; Laubscher, Bryan E.; Olivas, Nicholas L.; Grubler, Andrew C.
Report Date: JAN 1999
Pages: 21 PAGES
Monitor Acronym: XF
Monitor Series: DOE
Descriptors: *RADAR IMAGES, FOURIER TRANSFORMATION, OPTICAL RADAR, ELECTROMAGNETIC FIELDS, HETERODYNING, QUANTUM THEORY, DOPPLER RADAR, IMAGES, ELECTROMAGNETIC SPECTRA.
Identifiers: RADAR/LIDAR SYSTEMS, FOURIER TRANSFORM HETERODYNE
Abstract: We present a detection process capable of directly imaging the transverse amplitude, phase, and Doppler shift of coherent electromagnetic fields. Based on coherent detection principles governing conventional heterodyned RADAR/LIDAR systems, Fourier Transform Heterodyne incorporates transverse spatial encoding of the reference local oscillator for image capture. Appropriate selection of spatial encoding functions allows image retrieval by way of classic Fourier manipulations. Of practical interest: (i) imaging may be accomplished with a single element detector/sensor requiring no additional scanning or moving components, (ii) as detection is governed by heterodyne principles, near quantum limited performance is achievable, (iii) a wide variety of appropriate spatial encoding functions exist that may be adaptively configured in real-time for applications requiring optimal detection, and (iv) the concept is general with the applicable electromagnetic spectrum encompassing the RF through optical.
Limitation Code: APPROVED FOR PUBLIC RELEASE
Source Code: 211350
Citation Creation Date: 06 JUN 2001