Global Positioning System (GPS) User Equipment (UE) Time Aiding Using WWV/WWVB

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA8650-10-M-1842
Agency Tracking Number: F093-152-1971
Amount: $100,000.00
Phase: Phase I
Program: SBIR
Awards Year: 2010
Solicitation Year: 2009
Solicitation Topic Code: AF093-152
Solicitation Number: 2009.3
Small Business Information
Toyon Research Corp.
6800 Cortona Drive, Goleta, CA, 93117
DUNS: 054672662
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Roger Helkey
 Senior Scientist
 (805) 968-6787
 rhelkey@toyon.com
Business Contact
 Marcella Lindbery
Title: Director of Finance and Contracts
Phone: (805) 968-6787
Email: mlindbery@toyon.com
Research Institution
N/A
Abstract
Toyon proposes to design, develop and build a GPS system that uses external RF signals for timing estimation in order to acquire Precise Positioning Service (P/Y/M-code) signals under jamming conditions where the GPS C/A-code cannot be used. The RF signals will be selected to provide sub-second timing accuracy in order to limit the substantial computation involved in acquiring PPS signals in low signal-to-noise ratio environments. Toyon will develop a highly efficient PPS signal acquisition unit and integrate it into our GPS receiver, targeting PPS acquisition of a given satellite in fewer than 10 sec from availability of the timing reference. The RF timing reference developed under this program can also be used as a synchronization signal to allow PPS signal acquisition in other GPS receivers. BENEFIT: The C/A-code is easily jammed due to its known modulation code. PPS (P/Y/M-code) signals for accurate navigation are difficult to acquire without use of the C/A-code signals for a timing reference. The GPS receiver technology developed under this program will allow hand-held GPS receivers, which must be shut down to conserve battery power, to acquire PPS signals in a jamming environment.

* information listed above is at the time of submission.

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