Performance of the PHILTRE Processor at Low Signal-to-Noise Ratios

• Main Authors: Sobel, P A, Von Seggern, D H
• Other Authors: TELEDYNE GEOTECH ALEXANDRIA VA SEISMIC DATA ANALYSIS CENTER
• Format: Text
• Language: English
• Published: 1975
• Subjects: Seismology; Seismic Detection and Detectors; *SEISMIC DETECTION; *SEISMIC WAVES; *SIGNAL PROCESSING; ADAPTIVE SYSTEMS; NONLINEAR SYSTEMS; RAYLEIGH WAVES; SEISMIC ARRAYS; SIGNAL TO NOISE RATIO; Vela Uniform; Seismic discrimination; Adaptive filters; PHILTRE processor; Alpa; Kamchatka
• Online Access: http://www.dtic.mil/docs/citations/ADA016537; http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA016537

In this report it is shown that a non-linear, adaptive processor called PHILTRE is useful in detecting long-period Rayleigh waves in various low signal-to-noise ratio situations: signals buried in noise at various levels, two signals mixed at various azimuths and relative amplitudes, and a suite of...