title: Determination of the velocity vector of point retroreflectors by spatial filtering of Doppler spectra.
abstract: A method for determining the velocity vector of coherently illuminated point retroreflectors moving with velocity upsilon (s) in the focal region of the collecting lens of an optical heterodyne receiver from the doppler spectrum is examined. Information relating to the magnitude and direction of upsilon (s) is shown to be obtainable by introducing a rotating mask in the signal or detector arm of the heterodyne receiver. The significance of the configuration examined as a model for widely dispersed multielement doppler radar systems is briefly discussed.
authors.forename: N H
authors.initials: NH
authors.lastname: Farhat
authors.forename: H M
authors.initials: HM
authors.lastname: Weiskittel