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APPLICATION OF PSEUDO-NOISE CORRELATION & BANDWIDTH SYNTHESIS TO ORBIT…

Award Information

Agency:
National Aeronautics and Space Administration 		Branch:
N/A 		Award ID:
636 		Program Year/Program:
1984 / SBIR
Agency Tracking Number:
636 		Solicitation Year:
N/A 		Solicitation Topic Code:
N/A 		Solicitation Number:
N/A
Small Business Information
Stanford Telecommunications
6888 Elm Street Mclean, VA 22101
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 2
Fiscal Year: 1984
Title: APPLICATION OF PSEUDO-NOISE CORRELATION & BANDWIDTH SYNTHESIS TO ORBIT DETERMINATION
Agency: NASA
Contract: N/A
Award Amount: $499,995.00
 

Abstract:

A TECHNIQUE WHICH COMBINES THE USE OF PSEUDO-NOISE (PN) CODECORRELATION AND MULTILATERATION WITH ANOTHER TECHNIQUE, TERMED "BANDWIDTH SYNTHESIS" (BWS), TO SIGNIFICANTLY ENHANCETHE ACCURACY OF SATELLITE ORBIT DETERMINATION IS THE FOCUS OF THIS PROJECT. FROM A THEORETICAL VIEWPOINT, BWS ALLOWS ONE TO CONSTRUCT A VERY WIDEBAND PN CORRELATION FUNCTION (E.G., REFLECTING MORE THAN 100 MHZ) BY EMPLOYING MULTIPLE PN CODES, EACH OF RELATIVELY NARROW-BANDWIDTH (E.G., LESS THAN 10 MHZ), WITH EACH OCCUPYING A DISJOINT FREQUENCY BAND.THIS BWS TECHNIQUE HAS BEEN APPLIED TO INTERFEROMETRY BUT APPARENTLY NOT TO PN CORRELATION/MULTILATERATION. THE GOALSOF THIS RESEARCH ARE: TO DEVELOP THE THEORETICAL BASIS FOR BWS/PN/MULTILATERATION (BWSPNM), CONSIDER HARDWARE AND SOFTWARE PROCESSING TECHNIQUES THAT MAY PROVIDE A CAPABILITYFOR NEAR-REAL-TIME ORBIT DETERMINATION, IDENTIFY ERROR SOURCES AND ASSESS THEIR POTENTIAL, AND ILLUSTRATE HOW BWSPNM MAY BE APPLIED VIA BOTH EXISTING SYSTEMS - SUCH AS TDRSS AND GPS - AND VIA FUTURE SYSTEMS. SIGNIFICANT BENEFITS OF BWSPNM RELATIVE TO OTHER TECHNIQUES, SUCH AS INTERFEROMETRY, ARE IDENTIFIED; POSSIBLE BENEFITS MIGHT BE REDUCTIONS IN REQUIREMENTS FOR FREQUENCY STANDARD STABILITY AND DATA TRANSFER.

Principal Investigator:

Aaron Weinberg

Business Contact:

Small Business Information at Submission:

Stanford Telecommunications
6888 Elm Street Mclean, VA 22101

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