ElOp EO/IR LOROP camera: image stabilization for dual-band whiskbroom scanning photography

Vladimir Petrushevsky; Yehoshua Karklinsky; Arie Chernobrov

doi:10.1117/12.453838

23 January 2003 ELOp EO/IR LOROP camera: image stabilization for dual-band whiskbroom scanning photography

Vladimir Petrushevsky, Yehoshua Karklinsky, Arie Chernobrov

Proceedings Volume 4820, Infrared Technology and Applications XXVIII; (2003) https://doi.org/10.1117/12.453838
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

Abstract

The ELOP dual band LOROP camera was designed as a payload of a 300 gal reconnaissance pod capable of being carried by a single-engineerd fighter aircrat like F-16. The optical arrangement provides coincidence of the IR and EO optical axes, as well as equality of the fields-of-view. These features allow the same sacn coverage to be achieved, and the same gimbals control software to be used for the visible-light-only, IR-only and simultaneous dual band photography. Because of intensive, broadband vibration existing in teh pod environment, special attention was given to image stabilization system. Nevertheless, residual vibraiton still exists in a wide frequency range spreading from zero frequency to the detector integration rate and beyond it. Hence, evaluation of the camera performance could not rely on the well-known analytical solutions for MTF_MOTION. The image motion is deinfed in terms of the Power Spectral Density throughout the whole frequency range of interest. The expected MTF_MOTION is calculated numerically using a statistical approach. Aspects of the staggered-structure IR detecotr application in oblique photography are discussed. Particuarly, the ground footprint of the IR detector is much wider along-scan than one of the EO detector, requiring considerations to be implemented in order to prevent IR image deformation.

Citation Download Citation

Vladimir Petrushevsky, Yehoshua Karklinsky, and Arie Chernobrov "ELOp EO/IR LOROP camera: image stabilization for dual-band whiskbroom scanning photography", Proc. SPIE 4820, Infrared Technology and Applications XXVIII, (23 January 2003); https://doi.org/10.1117/12.453838

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