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Proceedings Paper

Pulse Detection In Acousto-Optic Channelized Receivers
Author(s): Brian M. Sadler; Stephen B. Balakirsky; Daniel McCarthy
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Paper Abstract

The large time-bandwidth products of acousto-optic spectrum analyzers require dedicated post-processing hardware for real-time signal parameter estimation with low false alarm rates. Parameters of interest include center frequency, time-of-arrival, time-of-departure, and amplitude. Maximum likelihood parameter estimation can be performed with a spectrogram correlation process, which is a 2-d matched filter operating on the time-frequency history of the spectrum analyzer. The filter is matched to the known covariance of the signal. A data collection board was constructed to allow capture of 256 channels at a readout rate of up to 15 μS. This data was used to examine sub-optimal implementations of the 2-d matched filter. A high-accuracy 2-d peak detection algorithm was developed to assess the filter performance. Experimental results are presented, and design tradeoffs are shown to exist between filter complexity and accuracy of parameter estimation.

Paper Details

Date Published: 14 August 1989
PDF: 6 pages
Proc. SPIE 1102, Optical Technology for Microwave Applications IV, (14 August 1989); doi: 10.1117/12.960552
Show Author Affiliations
Brian M. Sadler, Harry Diamond Labs (United States)
Stephen B. Balakirsky, Harry Diamond Labs (United States)
Daniel McCarthy, Harry Diamond Labs (United States)

Published in SPIE Proceedings Vol. 1102:
Optical Technology for Microwave Applications IV
Shi-Kay Yao, Editor(s)

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