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Proceedings Paper

All-Electronic Simulation Of Scanning Infrared Sensors
Author(s): Keith Norsworthy; Dahl Hofmeister
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Paper Abstract

The paper describes an all-electronic multi-channel waveform generator capable of simulating the multiplexed analog signals that leave the focal plane of a scanning mosaic infrared sensor. Target scenarios, background clutter, and various noise components are computer loaded in near real-time and the all-electronic simulator accurately synthesizes the many detector responses, and then outputs the sampled detector information in a format representative of the sensor being simulated. To facilitate rapid computer loading, each scenario object is specified by its amplitude and two dimensional position in the far-field and logic circuitry within the simulator deduces the multiplicity of detector waveshapes that result as the optical blur spot scans across the defined focal plane detector layout. Provision is made to handle dense target clusters and the initial simulator will be capable of simulating 5120 detectors sampled at typically 5000 samples per second. The analog detector samples are output over eighty separate D-to-A convertor channels, each carrying time-multiplexed signals from one or more columns of detectors.

Paper Details

Date Published: 14 July 1988
PDF: 10 pages
Proc. SPIE 0940, Infrared Scene Simulation: Systems, Requirements, Calibration, Devices, and Modeling, (14 July 1988); doi: 10.1117/12.947162
Show Author Affiliations
Keith Norsworthy, Boeing Electronics (United States)
Dahl Hofmeister, XonTech, Inc. (United States)


Published in SPIE Proceedings Vol. 0940:
Infrared Scene Simulation: Systems, Requirements, Calibration, Devices, and Modeling
R. Barry Johnson; Milton J. Triplett, Editor(s)

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