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Advanced GPS Based Passive Tracking System

Award Information

Department of Defense
Air Force
Award ID:
Program Year/Program:
1997 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
American GNC Corporation
888 Easy Street Simi Valley, CA 93065-1812
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Woman-Owned: No
Minority-Owned: Yes
HUBZone-Owned: No
Phase 1
Fiscal Year: 1997
Title: Advanced GPS Based Passive Tracking System
Agency / Branch: DOD / USAF
Contract: N/A
Award Amount: $99,993.00


There is a need to accurately determine the three-dimensional position and velocity of an airborne threat. In this project, a special GPS/INS system is designed for providing highly accurate position and velocity information. In the system, several innovative GPS/INS integration techniques are employed: (1) Advanced real-time GPS attitude determination algorithms and integer ambiguity resolution approaches; (2) novel SDGPS (Sequential Differential GPS) and common-view GPS techniques for effectively eliminating GPS errors; (3) innovative GPS/INS structures for effectively integrating Global Positioning System (GPS) and Inertial Navigation System (INS) position (pseudorange), as well as attitude measurements. The advances of the project are meant to improve the performance of conventional GPS/INS integrated systems which may not be suitable for position determination purposes, because: (1) Their attitude accuracy, especially the INS azimuth accuracy, is still limited by INS inertial alignment errors and gyro drift errors; (2) the time-synchronization problem is not considered in conventional designs; (3) the techniques for eliminating the GPS errors that are common to various carrying platforms are not addressed in conventional designs.

Principal Investigator:

Chin-fang Lin

Business Contact:

Small Business Information at Submission:

American Gnc Corp.
9131 Mason Avenue Chatsworth, CA 91311

Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No