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A Collective Detection Based GPS Receiver for Small Satellites

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NNX13CG37P
Agency Tracking Number: 120199
Amount: $124,965.00
Phase: Phase I
Program: STTR
Solicitation Topic Code: T8.01
Solicitation Number: N/A
Solicitation Year: 2012
Award Year: 2013
Award Start Date (Proposal Award Date): 2013-05-23
Award End Date (Contract End Date): 2014-05-22
Small Business Information
Greenbelt, MD 20770-1405
United States
DUNS: 101537046
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: Yes
Principal Investigator
 William Bamford
 Principal Investigator
 (301) 345-1535
Business Contact
 David Gaylor
Title: Business Official
Phone: (303) 656-9035
Research Institution
 University of Colorado Boulder
 Meagan Taylor
3100 Marine Street
Boulder, CO 80303-80303
United States

 () -
 Domestic Nonprofit Research Organization

To solve the problem of autonomous navigation on small satellite platforms less than 20 kg, we propose to develop an onboard orbit determination receiver for small LEO satellites which lack stable Attitude Determination and Control System (ADCS), continuous GPS coverage, or ground tracking. The system is a refinement of existing spaceborne receiver technology built around a new, innovative collective detection and direct positioning algorithm developed by Dr. Penny Axelrad, a reduced set of GPS hardware, and a compact orbit propagator. The small satellite collective orbit determination receiver (SCOR) brings together efficient reference orbit representations, snapshot GPS sampling, collective detection and direct positioning, and modular orbit propagation methods, to produce an effective new approach for onboard support of small satellites. Since the collective detection algorithm does not require continuous GPS tracking to generate navigation solutions, portions of the receiver can be duty cycled to reduce power consumption between measurements. Additionally, this approach allows for satellites without pointing capabilities to obtain sufficient measurements to generate solutions by taking multiple snapshots when the spacecraft attitude is in a favorable orientation with respect to the GPS constellation.

* Information listed above is at the time of submission. *

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