All-Electronic Simulation Of Scanning Infrared Sensors

Keith Norsworthy; Dahl Hofmeister

doi:10.1117/12.947162

14 July 1988 All-Electronic Simulation Of Scanning Infrared Sensors

Keith Norsworthy, Dahl Hofmeister

Proceedings Volume 0940, Infrared Scene Simulation: Systems, Requirements, Calibration, Devices, and Modeling; (1988) https://doi.org/10.1117/12.947162
Event: 1988 Technical Symposium on Optics, Electro-Optics, and Sensors, 1988, Orlando, FL, United States

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.

Citation Download Citation

Keith Norsworthy and Dahl Hofmeister "All-Electronic Simulation Of Scanning Infrared Sensors", Proc. SPIE 0940, Infrared Scene Simulation: Systems, Requirements, Calibration, Devices, and Modeling, (14 July 1988); https://doi.org/10.1117/12.947162

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