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Proceedings Paper

Calibration process for head-up display: test set-up
Author(s): R. K. Mishra
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Paper Abstract

Head Up Display [HUD] is highly precise line replaceable unit {LRU} located in aircraft cockpit. This flight critical LRU is required to display data / information related to flight, navigation and weapon aiming. Weapon aiming is performed with reference to field axis of the HUD. The orientation of field axis, for a given cockpit installation, is normally defined precisely with respect to fore and aft reference line [FRL] of the aircraft. A precision test setup has been developed to evaluate HUD prior to its installation in the cockpit. It is significant that setup is calibrated inclusive of mounting tray. Head up display units are subsequently replaced within the tray for evaluation and clearance. This paper describes the salient features of the test setup along with the calibration process. Spatial and spectral line widths of head up display, along with other parameters, are measured accurately using the setup. It is well established to measure the spectral line width with the help of spectra-photometer. However, using the photometer, a simple method is proposed and utilized for the measurement of spatial line width.

Paper Details

Date Published: 15 September 2004
PDF: 8 pages
Proc. SPIE 5443, Defense, Security, and Cockpit Displays, (15 September 2004); doi: 10.1117/12.544009
Show Author Affiliations
R. K. Mishra, Aeronautical Development Establishment (India)

Published in SPIE Proceedings Vol. 5443:
Defense, Security, and Cockpit Displays
Darrel G. Hopper, Editor(s)

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