Performance of Integrated Electro-Optical Navigation Systems

T. Hoshizaki, D. Andrisani II, A. W. Braun, A. K. Mulyana, and J. S. Bethel

Peer Reviewed

Abstract: Performance is analyzed for an airborne tightly coupled inertial navigation system (INS)/GPS/electro-optical imaging (EO) system that simultaneously estimates platform states, sensor biases, and unknown ground object coordinates using a single Kalman filter. Analysis is done by (1) comparing the performance of the INS/GPS/EO system with that of conventional tightly coupled INS/GPS navigation systems, (2) changing INS and GPS performance to determine the dependency on individual sensor performance, and (3) investigating the benefits of tracking a known ground object (control point). Simulation results show that (1) poor INS/GPS yaw angle accuracy is significantly improved by tracking an unknown ground object with the INS/GPS/EO system; (2) GPS performance has effects on platform position, velocity, and orientation accuracy, while INS performance has effects mainly on platform orientation accuracy; and (3) tracking a control point results in better navigation accuracy than tracking an unknown ground object, suggesting the possibility of using control points as an alternative to GPS.
Published in: NAVIGATION: Journal of the Institute of Navigation, Volume 51, Number 2
Pages: 101 - 122
Cite this article: Hoshizaki, T., Andrisani, D., II, Braun, A. W., Mulyana, A. K., Bethel, J. S., "Performance of Integrated Electro-Optical Navigation Systems", NAVIGATION: Journal of The Institute of Navigation, Vol. 51, No. 2, Summer 2004, pp. 101-122.
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