Accession Number : ADD013119

Title :   Synthetic Aperture Multi-Telescope Tracker Apparatus.

Descriptive Note : Patent, Filed 10 Jun 85, patented 19 May 87,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Carreras,Richard A ; Cusumano,Salvatore J ; Jenks,Morton B ; Suizu,Robert I

Report Date : 19 May 1987

Pagination or Media Count : 17

Abstract : A plurality of telescopes provide output return signals which are applied both directly and in sampled form to a photo-detector cell. The detected signals from the photo-detector will represent the constant and transient errors of the telescope system. A low pass filter insures that the tracker provides only the constant or D.C. component of the error, while a high pass filter insures that the existing measuring devices for each telescope beam provide only the transient or A.C. component of the error. The A.C. and D.C. error signals are summed together with the appropriate applied gains on each channel such that the sum reconstructs the original telescope position error with good fidelity. (Patent)

Descriptors :   *PATENTS, *OPTICAL TRACKING, *TELESCOPES, PHOTODETECTORS, ERRORS, MEASUREMENT, HIGH PASS FILTERS, LOW PASS FILTERS, ALTERNATING CURRENT, DIRECT CURRENT, TRANSIENTS, SIGNALS, GAIN, CHANNELS, FAR FIELD

Subject Categories : Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE