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LASER METROLOGY SYSTEM FOR RADIO TELESCOPES

Award Information

Agency:
National Science Foundation
Branch:
N/A
Award ID:
21606
Program Year/Program:
1993 / SBIR
Agency Tracking Number:
21606
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
OPTRA, Inc
461 Boston Street Topsfield, MA 01983-
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 1993
Title: LASER METROLOGY SYSTEM FOR RADIO TELESCOPES
Agency: NSF
Contract: N/A
Award Amount: $49,662.00
 

Abstract:

A HIGHLY PRECISE REMOTE MEASUREMENT SYSTEM FOR THE PURPOSE OF DYNAMICALLY MAINTAINING THE FIGURE OF SUBMILLIMETER-WAVE RADIO TELESCOPE REFLECTORS IS BEING DEVELOPED. SUCH STRUCTURES ARE NORMALLY DISTORTED BY THE COMBINED EFFECTS OF WIND FORCES AND DIFFERENTIAL THERMAL EXPANSION. THE RESULT OF SUCH DISTORTIONS IS THAT THE TELESCOPES ARE UNABLE TO ACHIEVE DIFFRACTION-LIMITED ANGULAR RESOLUTION. THE IMPLEMENTATION OF A SERVO SYSTEM IN SUCH TELESCOPES WOULD, AT VERY SMALL INCREMENTAL COST, IMPROVE THEIR PERFORMANCE (ANGULAR RESOLUTION) BY AS MUCH AS AN ORDER OF MAGNITUDE. SUCH A SERVO SYSTEM NEEDS ACTUATORS TO CONTROL THE FIGURE, AND A METROLOGY SYSTEM TO GENERATE THE ERROR SIGNALS WHICH DRIVE THE ACTUATORS. THIS PROJECT IS AIMED AT CREATING THE NECESSARY METROLOGY SYSTEM. IT SHOULD BE NOTED THAT MODERN SUBMILLIMETER-WAVE ANTENNAE (OR REFLECTOR DISHES) ARE ALREADY EQUIPPED WITH MECHANICAL ACTUATORS, WHICH ARE USED TO BRING THE REFLECTOR TO ITS OPTIMUM SHAPE FOLLOWING INSTALLATION. IT IS A RELATIVELY STRAIGHTFORWARD MATTER TO PROVIDE THESE ACTUATORS WITH ELECTRONIC CONTROLS TO COMPLETE THE SERVO LOOP. THE TECHNOLOGY IS APPLICABLE NOT ONLY TO FUTURE TELESCOPES AND TELESCOPES UNDER CONSTRUCTION, BUT ALSO AS A RETROFIT TO EXISTING SUBMILLIMETER-WAVE TELESCOPES, AND TO PROVIDE PRECISION METROLOGY FOR MEASURING OTHER LARGE STRUCTURES SUCH AS AIRCRAFT, SPACE STATIONS, BUILDINGS, BRIDGES, ETC.

Principal Investigator:

Michael Hercher
5088876600

Business Contact:

Small Business Information at Submission:

Optra Inc.
461 Boston St Topsfield, MA 01983

EIN/Tax ID:
DUNS: N/A
Number of Employees: N/A
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No