This paper details the development of a modularized system level model of a sensor
whose detector dimensions may be small with respect to the distance between adjacent
detectors. The effects of individual system components and characteristics such as target
to background properties, collection optics, detectors, and classifiers will be modeled.
These individual effects will then be combined to provide an overall system performance
model.
The model will facilitate design trade offs for Unattended Ground Sensors. The size and
power restrictions of these sensors often preclude these sensors from being effective in
high resolution applications such as target identification. Consequently, existing imager
performance models are not directly applicable. However, these systems are well suited
for applications such as broad scale classifications or differentiations between targets
such as humans, animals or small vehicles. Furthermore, these sensors do not have to be
spaced closely together to be effective in these applications. Therefore, the demand for
these sensors is increasing for both the military and homeland security.
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