SBIR-STTR Award

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Improved DGPS data reliability through the use of advanced signal processing techniques
Award last edited on: 3/12/2002

Sponsored Program
SBIR
Awarding Agency
DOT
Total Award Amount
$212,854
Award Phase
2
Solicitation Topic Code
-----
Principal Investigator
Martin C Poppe Jr

Company Information

Cambridge Engineering Inc

PO Box 3099
Burlington, VT 05401
   N/A
   N/A
   N/A
Location: Single
Congr. District: 00
County: Chittenden

Phase I

Contract Number: ----------
Start Date: 00/00/00    Completed: 00/00/00
Phase I year
1990
Phase I Amount
$49,933
The objective of this research is to develop and test techniques which combat atmospheric noise and consequently increase the reliable range of the DGPS/radiobeacon link. The following ideas will be explored and tested:1) Wideband noise clipping, limiting or blanking of noise impulses to improve the signal to noise ratio. 2) The use of Side information to inform a forward error correcting decoder when noise burst occurs. 3) The optimization of code interleaving. 4) The use of Directional antennas to reflect noise on spatial considerations. An existing test bed be used to evaluate the first three ideas listed above. The possible advantages of a directional antenna will be determined through a review of existing noise studies, in the light of known MSK data link characteristics.

Anticipated Results:
Successful completion of Phase I will provide design guide lines for the inclusion of coding and advanced signal processing techniques in future DGPS data receiver designs.

Phase II

Contract Number: ----------
Start Date: 00/00/00    Completed: 00/00/00
Phase II year
1991
Phase II Amount
$162,921
___(NOTE: Note: no official Abstract exists of this Phase II projects. Abstract is modified by idi from relevant Phase I data. The specific Phase II work statement and objectives may differ)___ The objective of this research is to develop and test techniques which combat atmospheric noise and consequently increase the reliable range of the DGPS/radiobeacon link. The following ideas will be explored and tested:1) Wideband noise clipping, limiting or blanking of noise impulses to improve the signal to noise ratio. 2) The use of Side information to inform a forward error correcting decoder when noise burst occurs. 3) The optimization of code interleaving. 4) The use of Directional antennas to reflect noise on spatial considerations. An existing test bed be used to evaluate the first three ideas listed above. The possible advantages of a directional antenna will be determined through a review of existing noise studies, in the light of known MSK data link characteristics.

Anticipated Results:
Successful completion of Phase I will provide design guide lines for the inclusion of coding and advanced signal processing techniques in future DGPS data receiver designs.