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VLBI Antenna Calibration via GPS

Award Information

Agency:
National Aeronautics and Space Administration
Branch:
N/A
Award ID:
95430
Program Year/Program:
2010 / SBIR
Agency Tracking Number:
094851
Solicitation Year:
N/A
Solicitation Topic Code:
S1
Solicitation Number:
N/A
Small Business Information
NVI, Inc.
7257D Hanover Parkway Greenbelt, MD 20770-3612
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 2010
Title: VLBI Antenna Calibration via GPS
Agency: NASA
Contract: NNX10CD70P
Award Amount: $99,763.00
 

Abstract:

We propose to investigate and develop an inexpensive system to determine: 1)VLBI antenna properties such as axis-offset, non-intersection of axis and antenna reference point; 2) Gravitational and/or Thermal deformation; 3) The eccentricity vector from the VLBI antenna to nearby GPS receivers. The proposed system involves using several GPS receivers in close proximity driven by a common clock. Because of their proximity, atmosphere and ionosphere errors are common, and vanish when we take the difference of measurements from different receivers to a common a satellite. Satellite clock errors also vanish in this difference. Since the receivers use a common clock, receiver clock error also vanishes. The remaining error source is GPS multipath which can be mitigated.

Principal Investigator:

Daniel MacMillan
Principal Investigator
3016146118
Daniel.MacMillan@nviinc.com

Business Contact:

John Gipson
Business Official
3016146876
John.Gipson@nviinc.com
Small Business Information at Submission:

NVI, Inc.
7257D Hanover Parkway Greenbelt, MD 20770

EIN/Tax ID: 541634518
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No