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Proceedings Paper

Airborne electro-optical sensor: performance predictions and design considerations
Author(s): R. K. Mishra; A. M. G. Pillai; M. R. Sheshadri; C.G. Sadasiva Sarma
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Paper Abstract

TV- or FLIR-based electro-optical (EO) sensors are used for target acquisition in an airborne scenario. The TV sensor typically consists of an optical unit, a solid-state camera, and a visual monitor for image display. Target size, sensor resolution, atmosphere, platform disturbances, etc, are some of the important factors to be considered for designing an EO sensor for an airborne mission. A TV-based target acquisition system has been designed and developed. The resolution of the optical unit has been measured with the help of a TV resolution test chart and by experimentally evaluating the modulation transfer function (MTF). This technique has been extended for the measurement of MTF of the sensor (including video monitor). The sensor resolution deteriorates considerably due to base motions of the carrying platform. The degradation of sensor MTF due to airframe motion and angular vibration has been experimentally studied, and the results are presented. Present study enables the designer to predict the sensor performance for a given airborne scenario. Anomaly between the present values and the results reported earlier is indicated. Design considerations of an airborne sensor are also discussed briefly.

Paper Details

Date Published: 1 August 1991
PDF: 8 pages
Proc. SPIE 1482, Acquisition, Tracking, and Pointing V, (1 August 1991); doi: 10.1117/12.45689
Show Author Affiliations
R. K. Mishra, Aeronautical Development Establishment (India)
A. M. G. Pillai, Aeronautical Development Establishment (India)
M. R. Sheshadri, Aeronautical Development Establishment (India)
C.G. Sadasiva Sarma, Aeronautical Development Establishment (India)

Published in SPIE Proceedings Vol. 1482:
Acquisition, Tracking, and Pointing V
Michael K. Masten; Larry A. Stockum, Editor(s)

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