USA flag logo/image

An Official Website of the United States Government

DIGITAL OPTICAL PHASE-LOCK-LOOP

Award Information

Agency:
National Aeronautics and Space Administration
Branch:
N/A
Award ID:
12117
Program Year/Program:
1991 / SBIR
Agency Tracking Number:
12117
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Systems & Processes Engineering Corporat
6800 Burleson Road Building 320 Austin, TX -
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 2
Fiscal Year: 1991
Title: DIGITAL OPTICAL PHASE-LOCK-LOOP
Agency: NASA
Contract: N/A
Award Amount: $500,000.00
 

Abstract:

SYSTEMS & PROCESSES ENGINEERING CORPORATION (SPEC) HAS DEVELOPED AN INNOVATIVE DESIGN FOR A DIGITAL OPTICAL PHASE-LOCK-LOOP (DOPLL) FOR MEASUREMENT OF STRAIN, DISPLACEMENT, OR VIBRATION IN NONDESTRUCTIVE EVALUATION APPLICATIONS. THE TECHNIQUE OFFERS A NUMBER OF ADVANTAGES OVER PREVIOUS ANALOG PHASE-LOCK-LOOP DESIGNS. THE DIGITAL SYSTEM IS CAPABLE OF SEEKING MULTIPLE LOCK POINTS UNDER SOFTWARE CONTROL, SUCCESSIVELY REFINING THE MEASUREMENT PRECISION BY SEEKING LOCK POINTS AT HIGHER MODULATION FREQUENCIES. THE DIGITAL SYSTEM HAS A BROAD OPERATING BANDWIDTH, USING A DIGITAL FREQUENCY SYNTHESIZER IN PLACE OF A BANDWIDTH LIMITED VOLTAGE CONTROLLED OSCILLATOR. THE DIGITAL SYSTEM IS CAPABLE OF SIGNIFICANTLY FASTER OPERATION, SINCE THE PRECISE MODULATION FREQUENCY IS KNOWN AT PHASE LOCK AND NO PRECISION MEASUREMENT IS REQUIRED TO DETERMINE FREQUENCY. THE DESIGN IS RELATIVELY INSENSITIVE TO THE PATH OF THE INTENSITY MODULATED LIGHT, AND A COMMON DOPLL PATH LENGTH MEASUREMENT SYSTEM CAN BE UTILIZED WITH A NUMBER OF SENSOR TYPES, EACH CONNECTED VIA FIBER OPTICS.

Principal Investigator:

Gary B. Mcmillian
V.p., Chief Scientist
5123850082

Business Contact:

Clayton a. t. nyberg
EXECUTIVE VICE PRESIDENT
5123850318
Small Business Information at Submission:

Systems & Processes Engineerin
1406 Smith Road Suite A Austin, TX 78721

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