Coordinates Determination System Based on GPS/IMU Positioning and Acoustic Ranging

Award Information
Agency: Department of Defense
Branch: Army
Contract: DACA42-02-C-0032
Agency Tracking Number: A012-2115
Amount: $69,856.00
Phase: Phase I
Program: SBIR
Awards Year: 2002
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
888 Easy Street, Simi Valley, CA, 93065
DUNS: 611466855
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Ching-Fang Lin
 President
 (805) 582-0582
 cflin@americangnc.com
Business Contact
 Roy Medlin
Title: VP of Finance & Administr
Phone: (805) 582-0582
Email: rmedlin@americangnc.com
Research Institution
N/A
Abstract
"The objective of this project is to design a Coordinates Determination System Based on GPS/IMU Positioning and Acoustic Ranging. This system will provide accurate coordinates of the unexploded ordnance (UXO) in rough terrain where the GPS signals areblocked. AGNC's product, the AGNCT-2000CMIMU/GPS Palm NavigatorTM is used to provide accurate position reference at three or more points where GPS signals are available. Acoustic ranging is used to transfer the accurate positions to the handheld sensorunit that is used to detect the UXO. The accurate coordinates of the UXO are thus determined by the Palm NavigatorTM provided positions and acoustically determined ranges. In the Phase I of this project, we first perform the task of system configurationdesign for acoustic ranging. A correlator is used to estimate the time delay of an echoed acoustic signal. A set of orthogonal pseudo random codes are used to identify echoed signals from different transponders. Then the signal modulation scheme isdesigned. Next, acoustic channel circuit design is performed and implementation methods are investigated. The integration of the transponder based on the embedded GPS receiver and GPS/IMU integration is carried out. Finally the Coordinates DeterminationSystem is tested and evaluated through simulation and laboratory testing. The Coordinates Determination System Based on GPS/IMU Positioning and Acoustic Ranging developed in this project finds wide app

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

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