title: Optical spatial tracking using coherent detection in the pupil plane.
abstract: Design considerations for a heterodyne spatial tracking system utilizing pupil plane processing techniques and its advantages over traditional focal plane processing are described. Noise performance bounds, optimal and suboptimal local oscillator distributions, pull-in performance, and applications other than spatial tracking are discussed. Experimental verification of a one-axis closed-loop tracking system is presented.
authors.forename: E A
authors.initials: EA
authors.lastname: Swanson
authors.forename: G M
authors.initials: GM
authors.lastname: Carter
authors.forename: D J
authors.initials: DJ
authors.lastname: Bernays
authors.forename: D M
authors.initials: DM
authors.lastname: Hodsdon