title: Description of a Photoelectric Rotating Slit Elevation and Azimuth Sensor.
abstract: The Photoelectric Rotating Slit Elevation and Azimuth Sensor (PERSEAS) measures the azimuth and elevation of the line of sight to a target reflecting or emitting radiation in the 0.4- tol.1-micro portion of the spectrum. Angular field of view is 360 degrees in azimuth and 30 degrees in elevation. Eight stationary lenses are used with rotating fiber-optics slits and silicon photodiode detectors to produce electrical pulses which are time related to target angular coordinates. Data rate is one line-of-sight measurement per 2.5 msec. Accuracy is better than 1 mrad.
authors.affiliation: The University of Texas, Defense Research Laboratory, Military Physics Division, Austin, Texas, USA.
authors.forename: H E
authors.initials: HE
authors.lastname: Brown
authors.forename: P B
authors.initials: PB
authors.lastname: Brown
authors.forename: D W
authors.initials: DW
authors.lastname: Goodson
authors.forename: J D
authors.initials: JD
authors.lastname: Cope