Feasibility Study of Mixed-Signal Separation Techniques
Technical rept. no. 19
TEXAS INSTRUMENTS INC DALLAS EQUIPMENT GROUP
Pagination or Media Count:
A fesibility study to enhance a weaker signal hidden in the stronger wavetrains of different seismic sources was conducted. Two array beamforming methods were developed for and applied to the mixed-signal problem one is the adaptive beamformer ABF and the other is array shading technique. The ABF operates in the time domain, requires no a priori information, and can be used for a front-end detector. The array shading technique is designed in the frequency domain, needs interfering azimuth for null steering, and is intended for a post-detection processor. Results from experimental tests with recorded data from the Korean Seismic Research Station short-period array are also included.
- Seismic Detection and Detectors