Analytic boresight calibration of a line-of-sight sensor

Spiro P. Karatsinides; Mark L. Darnell

doi:10.1117/12.352888

15 July 1999 Analytic boresight calibration of a line-of-sight sensor

Spiro P. Karatsinides, Mark L. Darnell

Proceedings Volume 3692, Acquisition, Tracking, and Pointing XIII; (1999) https://doi.org/10.1117/12.352888
Event: AeroSense '99, 1999, Orlando, FL, United States

Abstract

Ground based boresighting techniques are used to install a line-of-sight sensor on an aircraft in order to align the sensor axes with the aircraft body axes. Due to the limitations of the calibration equipment, residual boresight errors often remain which degraded the system performance. This paper presents a method for in-flight calibration of the boresight errors of a line-of-sight sensor as an alternative to the less precise and more expensive conventional methods. This in-flight method employs a Kalman filter to estimate the boresight errors based on the difference between the expected and measured line of sight of a sight, and the azimuth and elevation angles of the sensor gimbals define the measured line of sight. The accuracy of the shipboard INS/GPS navigator is sufficient to make the analytic calibration practical. The results from flight tests show the benefit of this application of Kalman filter technology.

Citation Download Citation

Spiro P. Karatsinides and Mark L. Darnell "Analytic boresight calibration of a line-of-sight sensor", Proc. SPIE 3692, Acquisition, Tracking, and Pointing XIII, (15 July 1999); https://doi.org/10.1117/12.352888

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