Some Applications of a Mixed Signal Processor
TELEDYNE GEOTECH ALEXANDRIA VA SEISMIC DATA LAB
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A technique to process array data has been developed to determine when a second signal is hidden in the coda of a primary signal and to estimate the waveform of the two signals. The effectiveness of the mixed-signal processor has been demonstrated by operating on various possible mixed signals formed from recordings of earthquakes at Tonga in the South Pacific and at the Fox Islands in the Aleutians. For small arrays the processor is found to be substantially superior to simple beamforming. The distortion introduced by the use of finite time filters is found to be negligible.
- Seismic Detection and Detectors