Electromechanical Bandpass Resonator Frequency-Selective Device.
Final rept., 7 Jun 72-7 May 73,
PANAMETRICS INC WALTHAM MASS
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WOULD PERMIT THE FABRICATION OF FIELD DEPLOYABLE SPECTRUM ANALYZERS FOR DETECTING MECHANICAL VIBRATIONS GENERATED BY TARGETS OF INTEREST. The advantages sought in this approach to target signature analysis include low cost, small size, low power consumption and reduced communications burden. This report describes the characteristics of several models of resonators that were constructed within the 175 to 800 Hz frequency range. The results indicate that it is feasible to build these devices in the frequency range of interest 20 to 2000 Hz although the lower ranges are more difficult to achieve. These devices used piezoelectric transducers for coupling the energy in and out of the devices and attempts to directly couple audio or seismic energy to the input was only moderately successful.
- Electrical and Electronic Equipment
- Seismic Detection and Detectors