Curvature Spectra: Applications to Signal Detection and Estimation of the Resolving Power of Arrays
TELEDYNE GEOTECH ALEXANDRIA VA ALEXANDRIA LABS
Pagination or Media Count:
Curvature spectra convey roughly the same information as ordinary or high-resolution f-k spectra, with resolution intermediate between the two. The curvature of an array response function contains information about an array not supplied in the array response function itself. For example, the polarity of side lobes, i.e., whether they are small peaks or valleys, is better judged from curvature response plots. The differential response of an array provides a means of comparing the angular resolution of different arrays having the same signal detection sensitivity. Azimuth resolution of the infrasonic analog correlator detector is 0.95 mb. At 20 sec. period and -200 msec phase velocity, experience shows that the angular resolution of the Huancayo microbarograph array is about one degree of azimuth, which implies that theoretically the angular resolution of LAMA, measured by the same technique is about one minute of arc.
- Atmospheric Physics