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Accession Number:
AD0918427
Title:
Acquisition and Tracking Assembly II.
Corporate Author:
MCDONNELL DOUGLAS ASTRONAUTICS CO ST LOUIS MO
Report Date:
1974-02-15
Abstract:
A brassboard demonstration system was fabricated, tested, and exercised to compile parametric data on the acquisition and tracking portions of a 1 Gbps laser communication subsystem. The demonstration system consists of three primary parts the acquisition and tracking package, precision instrumentation equipment, and simulation equipment. The brassboard acquisition and tracking package utilizes three electrooptic detectors to sense the incoming signal from a cooperative beacon laser, a two axis gimbaled mirror for coarse pointing, and high frequency piezoelectric bender bimorph mirrors for fine pointing. The precision instrumentation equipment measures the pointing error of the brassboard acquisition and tracking package with an accuracy of 0.1 microradian. The simulation equipment provides beacon laser signals, background noise, realistic satellite limit cycles, satellite flexure effects, and orbital kinematic motions of the line-of-sight vector during acquisition and tracking. The brassboard system demonstrates the total automatic sequence of operations to verify the performance of all three stations low altitude satellite, synchronous satellite, and ground. Engineering data is presented on the basic modes of operation, the optical detectors, the control system, and the satellite dynamical effects. Performance data showed a system acquisition sensitivity at 1.06 micrometer of 9 photoelectrons per pulse.
Descriptive Note:
Final rept. 2 Aug 72-30 Jun 73,
Pages:
0290
Contract Number:
F33615-73-C-1006
File Size:
0.00MB
