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Precise GPS Positioning for Post-Mission Trajectory Estimation

Award Information
Agency: Department of Defense
Branch: Army
Contract: N/A
Agency Tracking Number: 26365
Amount: $536,605.00
Phase: Phase II
Program: SBIR
Solicitation Topic Code: N/A
Solicitation Number: N/A
Solicitation Year: N/A
Award Year: 1995
Award Start Date (Proposal Award Date): N/A
Award End Date (Contract End Date): N/A
Small Business Information
14960 Woodcarver Road
Colorado Springs, CO 80921
United States
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Thomas M. Kelecy
 (719) 481-4877
Business Contact
Phone: () -
Research Institution

Translated GPS tracking systems are frequently used to track missiles, aircraft, and other aerospace vehicle for applications requiring real-time position and velocity. The GPS/TPS tracking system provides intermediate data that is recorded during tracking and available for post-mission trajectory analysis. Greater post-mission trajectory accuracy can be achieved by using improved error models and making optimum use of the available data. This proposal outlines an error model analysis and post-processing technique directed at improving post-mission trajectory information. A method of generating accurate contiguous carrier phase measurements from the translated GPS signals is proposed. This carrier data will then be processed post-test to generate a "kinematic" solution for the trajectory. Flight test results with GPS receivers using this method have demonstrated that accuracies of better than 10 cm are possible. The degree of improvement in post-mission trajectory determination will be demonstrated using this method.

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

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