A Method For Extending The Dynamic Range Of Sampled IR Systems

Carl M. Evans; John Voboril

doi:10.1117/12.956785

12 December 1978 A Method For Extending The Dynamic Range Of Sampled IR Systems

Carl M. Evans, John Voboril

Proceedings Volume 0156, Modern Utilization of Infrared Technology IV; (1978) https://doi.org/10.1117/12.956785
Event: 22nd Annual Technical Symposium, 1978, San Diego, United States

Abstract

A technique for synthetically extending the upper limit of the dynamic range of sampled IR sensor systems was developed. The method utilizes the secondary overshoot, commonly found in the response of tuned amplifiers, to estimate the magnitude of the primary overshoot. This "Second Overshoot Technique" may be used in the saturated and unsaturated operating regions of the amplifiers. In both operating regions, it is possible to estimate the magnitude of an amplifier's primary overshoot by careful observation of the magnitude and relative occurrence time of the secondary overshoot. The net effect is an artificial extension of the top end of the sensor's dynamic range. This technique can be useful in either planned or existing systems as a means of extending the dynamic range. This extension method is presently in use on an orbiting satellite sensor system.

Citation Download Citation

Carl M. Evans and John Voboril "A Method For Extending The Dynamic Range Of Sampled IR Systems", Proc. SPIE 0156, Modern Utilization of Infrared Technology IV, (12 December 1978); https://doi.org/10.1117/12.956785

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