A Closed-Loop Imaging Infrared-Based Tracker For Fire Control

William Marshall; Peter Dahl; Russell Richardson; Mike Klein

doi:10.1117/12.960741

20 September 1989 A Closed-Loop Imaging Infrared-Based Tracker For Fire Control

William Marshall, Peter Dahl, Russell Richardson, Mike Klein

Proceedings Volume 1110, Imaging Infrared: Scene Simulation, Modeling, and Real Image Tracking; (1989) https://doi.org/10.1117/12.960741
Event: SPIE 1989 Technical Symposium on Aerospace Sensing, 1989, Orlando, FL, United States

Abstract

This report presents a closed-loop automatic tracker for imaging IR-based fire control. A tank target state estimation filter is discussed and major tradeoffs in the implementation of Kalman filters and tracker rate-aiding are given. Tank target maneuver capabilities are surveyed and results are incorporated in the filter. The developed augmented Kalman filter is based upon nine filter states and three measurements. Simulation studies show acceptable target prediction accuracies for tank targets even for constant Kalman gains. Gain scheduling is performed during filter initialization or when a "target maneuver" is detected from testing the statistics of filter residuals. The augmented Kalman filter uses range and line-of-sight (LOS) angular rate measurements obtained from platform-mounted range and angular rate sensors. Filtered inertial angular rates are used for tracker rate-aiding before and after "breaklock"-if this occurs (e.g., if target gets occluded). During the tracker "coast-until-reacquisition" phase the propagated filter rates are used to command the gimbals.

Citation Download Citation

William Marshall, Peter Dahl, Russell Richardson, and Mike Klein "A Closed-Loop Imaging Infrared-Based Tracker For Fire Control", Proc. SPIE 1110, Imaging Infrared: Scene Simulation, Modeling, and Real Image Tracking, (20 September 1989); https://doi.org/10.1117/12.960741

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available