Accession Number : ADD007089

Title :   Automatic Astroposition Determination Apparatus.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Allen,William A ; Chen,Pi-Fuay

Report Date : 01 Jan 1980

Pagination or Media Count : 7

Abstract : This invention relates to An automatic astroposition determination apparatus for performing measurements with improved precision and accuracy. A rectangular photosensor array is mounted in the focal plane of a theodolite and as the image of a star moves across the sensor array, a display of the image position and the time elapsed since the commencement of tracking is provided. Circuitry is provided to ensure that the leading edge of the star image on the array is tracked irrespective of how many photosensor elements the image overlies and irrespective of the direction of image transit on the array. (Author)

Descriptors :   *Patents, *Star trackers, Leading edges, Theodolites

Subject Categories : Optical Detection and Detectors
      Space Navigation and Guidance

Distribution Statement : APPROVED FOR PUBLIC RELEASE