Improving temporal coherence to enhance gain and improve detection performance

Ronald A. Wagstaff; Heath E. Rice

doi:10.1117/12.777281

16 April 2008 Improving temporal coherence to enhance gain and improve detection performance

Ronald A. Wagstaff, Heath E. Rice

Proceedings Volume 6963, Unattended Ground, Sea, and Air Sensor Technologies and Applications X; 69630T (2008) https://doi.org/10.1117/12.777281
Event: SPIE Defense and Security Symposium, 2008, Orlando, Florida, United States

Abstract

Temporal coherence is an important property of many acoustic signals. This paper discusses two fluctuation-based signal processors that improve the temporal coherence of phase and amplitude. Then they exploit the improved coherences to achieve substantial gains, such as, elimination of all noise to achieve exceptionally large "noise-free" automatic detections of temporally coherent signals. Both processors are discussed. One exploits phase fluctuations and the other one exploits amplitude fluctuations. The exploited parameters and signal processors are defined. Results are presented for automatic signal detection of a heavy treaded / tracked vehicle, a helicopter, a fast-boat in shallow coastal water, and a submerged source in the ocean.

Citation Download Citation

Ronald A. Wagstaff and Heath E. Rice "Improving temporal coherence to enhance gain and improve detection performance", Proc. SPIE 6963, Unattended Ground, Sea, and Air Sensor Technologies and Applications X, 69630T (16 April 2008); https://doi.org/10.1117/12.777281

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