MULTI-ACCESS FREE-SPACE LASER COMMUNICATION SYSTEM DESIGN

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$494,595.00
Award Year:
1990
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Agency Tracking Number:
10479
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Laser Data Technology Inc.
1244 Dielman Industrial Park, St Louis, MO, 63132
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Monte Ross
() -
Business Contact:
() -
Research Institution:
n/a
Abstract
MULTI-ACCESS SPACE OPTICAL COMMUNICATION SYSTEM DESIGNS ARE IMPLEMENTED THAT RESULT IN SMALL-SIZE, LIGHT-WEIGHT TERMINALS ON BOARD GEO AND LEO SATELLITES. SYSTEM DESIGNS ARE PROVIDED INCORPORATING THE ADVANCING HIGH-POWER, COHERENT GALLIUM ALUMINUM ARSENIDE LASER DIODES AND DIODE ARRAY TECHNOLOGY RESULTING IN SIMPLER, LOWER-COST SYSTEMS INCORPORATING GIMBAL-ONLY TRACKING AND DIRECT DETECTION. LASER TRANSMITTERS DESIGNS ARE PROVIDED WHICH PERMIT DATA RATES IN THE 1 MBPS REGIME TO BE TRANSMITTED FROM EACH LEO TO THE GEO USING MULTI-WATT LASER DIODES WITH EFFICIENCIES UP TO 50%. IN ADDITION, SYSTEM DESIGNS ARE PROVIDED THAT ENABLE SIMULTANEOUS DATA TRANSMISSION FROM A NUMBER OF LEO SATELLITES TO GEO. SYSTEM CONCEPT DESIGNS FOR LEO AND GEO LIGHT-WEIGHT TERMINALS INCORPORATING ACQUISITION, TRACKING, AND COMMUNICATION ARE GIVEN. MULTI-ACCESS APPROACHES FOR THE GEO SATELLITE INCLUDE ONE LARGE-APERTURE, WIDE-FIELD-OF-VIEW GIMBALLED SYSTEM TERMINAL, OR ALTERNATIVELY, A NUMBER OF SMALL-APERTURE (2 INCH) INDEPENDENTLY GIMBALLED TERMINALS. LEO TERMINALS USE 2 INCHAPERTURES AND WEIGH THIRTY POUNDS. SYSTEM AND COMPONENT SPECIFICATIONS ARE GIVEN FOR THE SELECTED CONCEPT, AND A RISK ASSESSMENT IS PROVIDED FOR A BALANCED DESIGN.

* information listed above is at the time of submission.

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