Probability Of Detection Curves For Sensors Using Pulsewidth Adaptive Thresholding

Caesar P. Ancheta

doi:10.1117/12.956786

12 December 1978 Probability Of Detection Curves For Sensors Using Pulsewidth Adaptive Thresholding

Caesar P. Ancheta

Proceedings Volume 0156, Modern Utilization of Infrared Technology IV; (1978) https://doi.org/10.1117/12.956786
Event: 22nd Annual Technical Symposium, 1978, San Diego, United States

Abstract

A method for calculating the probability of detection of generalized adaptive threshold systems is applied to sensors employing pulsewidth-adaptive-threshold signal processing concepts. These sensors typically use the signal as input to a guard channel that controls the threshold against which the signal is itself com-pared. The variation of probability of detection with signal-to-noise ratio and with the form of the input signal plus clutter is presented. For the specific sensor analyzed, in which Gaussian statistics hold, the probability of detection curves branch off the cumulative normal distribution curves as a function of guard channel gain. There is also a range of guard channel gains for which the detection performance of pulse-width adaptive sensors will suffer essentially zero insertion loss due to the adaptive threshold itself.

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Caesar P. Ancheta "Probability Of Detection Curves For Sensors Using Pulsewidth Adaptive Thresholding", Proc. SPIE 0156, Modern Utilization of Infrared Technology IV, (12 December 1978); https://doi.org/10.1117/12.956786

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