| Autor: |
Palmer, D. R., Georges, T. M., Wilson, J. J., Weiner, L. D., Paisley, J. A., Mathiesen, R., Pleshek, R. R., Mabe, R. R. |
| Zdroj: |
Journal of the Acoustical Society of America; 1991, Vol. 90 Issue 4, p2330-2330, 1p |
| Abstrakt: |
Ascension Island is located in the South Atlantic Ocean 9100 km, or about one quarter of the distance around the globe, from Heard Island. It is the location of one of the U.S. Air Force's missile impact locating system (MILS) sites. All HIFE transmissions were recorded on at least 8 MILS hydrophones and many more were recorded on 11 hydrophones, using both digital and analog systems. The hydrophones are located at the depth of the sound channel axis or somewhat deeper. Preliminary indications are that most, if not all, of the data are of high quality. Typical signal-to-noise ratios for the hydrophones south and southeast of the island were 20 to 30 dB in a 1-Hz band. Late, reverberative arrivals were observed for up to twenty minutes after termination of the direct arrival. These and other general characteristics of the Ascension data set will be discussed. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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