Measurements Of Off-Axis Rejection In Imaging Systems

Ron D. Abbott

doi:10.1117/12.956081

2 June 1978 Measurements Of Off-Axis Rejection In Imaging Systems

Ron D. Abbott

Proceedings Volume 0133, Optics in Missile Engineering; (1978) https://doi.org/10.1117/12.956081
Event: 1978 Los Angeles Technical Symposium, 1978, Los Angeles, United States

Abstract

One of the basic concerns of Exoatmospneric R.diometry is the spatial rejection of naturally present background radiation while viewing a low intensity source. This paper presents the technique for assessing this sensor quality as well as the associated problems. The basic measurement technique utilizes a CO₂ laser operating at 10.6 micro-meters. The beam is expanded and recollimated to a 13 inch diameter. The focal plane sampling system utilizes a mercury cadmium telluride detector cooled to 77 degrees kelvin. Detection data is sam led with a lock-in voltmeter synchronized to the chopped laser beam. Results from two sensors are presented and demonstrate a m easurement capability of 12 orders of magnitude dynamic range.

Citation Download Citation

Ron D. Abbott "Measurements Of Off-Axis Rejection In Imaging Systems", Proc. SPIE 0133, Optics in Missile Engineering, (2 June 1978); https://doi.org/10.1117/12.956081

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