Accession Number : AD0906977

Title :   Brassboard Acquisition and Tracking Requirements Study.

Descriptive Note : Final technical rept. 29 May-15 Nov 72,

Corporate Author : MCDONNELL DOUGLAS ASTRONAUTICS CO ST LOUIS MO

Personal Author(s) : Lowry, Jim H. ; Wolf, J. D. ; Carter, J. P.

Report Date : DEC 1972

Pagination or Media Count : 134

Abstract : The objective of this study was to define the hardware design requirements of a brassboard acquisition and tracking subsystem, based on the preliminary subsystem design documented in SAMSO-TR-71-251. The work includes detailed design for the acquisition and tracking subsystem, simulation equipment, and precision instrumentation equipment; and detailed descriptions of the integration of components and experiment test plan. The brassboard acquisition and tracking package is configured to verify the performance for all three primary stations; low altitude satellite, synchronous satellite, and ground. It is capable of demonstrating the total automatic sequence of operations required to detect and sense initial errors as large as + or - 8.75 mrad, align the optical boresight and point a simulated communication laser to within + or - 50 micro-rad using 10 pps information, change modes from acquisition to tracking, and track and fine point with an error of less than 1 micro-rad. The precision instrumentation equipment is designed to measure the pointing capability of the brassboard acquisition and tracking subsystem to a fraction of the 1 micro-rad tracking error. The simulation equipment is configured to provide beacon laser signals, realistic satellite rotations, satellite flexure effects, and orbital kinematic motions of the line-of-sight during acquisition and tracking. (Author)

Descriptors :   (*LASERS, SATELLITE TRACKING SYSTEMS), (*OPTICAL TRACKING, TARGET ACQUISITION), ELECTROOPTICS, OPTICAL COMMUNICATIONS, SYNCHRONOUS SATELLITES, LOW ALTITUDE, INTERFACES, INSTRUMENTATION, INFRARED IMAGES, ANALOG SYSTEMS, GIMBALS, DIGITAL SYSTEMS, INFRARED BEACONS.

Subject Categories : Lasers and Masers
      Optical Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE