Mean-Level Detection Utilizing a Digital First-Order Recursive Filter |
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Authors: | Dillard GM |
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Institution: | Naval Electronics Laboratory Center, San Diego, CA 92152; |
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Abstract: | The use of a simple digital first-order recursive filter for mean-level detection is described. Performance characteristics are derived for the case where the background noise is stationary, and detection results are given for Swerling Case 2 fluctuating signals. Equations are derived for computing false-alarm performance in nonstationary backgrounds, and results are given for some special cases. Comparisons are made with performance of a conventional mean-level circuit in stationary and nonstationary noise. |
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