Multipath Characterization and Mitigation Using Modernized Signals

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA8650-05-C-1833
Agency Tracking Number: F041-234-2364
Amount: $740,549.00
Phase: Phase II
Program: SBIR
Awards Year: 2005
Solicitation Year: 2004
Solicitation Topic Code: AF04-234
Solicitation Number: 2004.1
Small Business Information
3702 Pender Drive, Suite 170, Fairfax, VA, 22030
DUNS: 153857495
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: Y
Principal Investigator
 Suman Ganguly
 Scientist
 (703) 385-7717
 sganguly@cfrsi.com
Business Contact
 Suman Ganguly
Title: President
Phone: (703) 385-7717
Email: sganguly@cfrsi.com
Research Institution
N/A
Abstract
Multipath causes the most errors in a well-designed navigational system. Despite many algorithms and techniques designed to reduce them, these errors still compromise most GPS receivers. The ideal solution to this problem would discriminate the paths and correct errors in real time, using hardware and software. In Phase I of this program, we have investigated different types of multipath and their effects on receiver performance. We’ve considered several possible solutions, and evaluated them under different circumstances. We have also considered the relationship between the complexity of multipath mitigation techniques and the complexity of receiver architecture. Based on these investigation we propose a novel receiver architecture comprising both spatial and multi-scale temporal domain capabilities. This approach promises robust detection, characterization and mitigation of diverse classes of multipaths. We propose to perform detailed engineering design, develop a working prototype and, finally, test and demonstrate its performance during Phase II. The development plan will follow our well-proven methodology and GPS development tools we have developed. The schemes include novel antenna development, block processing techniques and multiple mitigation filters.

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

Agency Micro-sites

SBA logo
Department of Agriculture logo
Department of Commerce logo
Department of Defense logo
Department of Education logo
Department of Energy logo
Department of Health and Human Services logo
Department of Homeland Security logo
Department of Transportation logo
Environmental Protection Agency logo
National Aeronautics and Space Administration logo
National Science Foundation logo
US Flag An Official Website of the United States Government