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Digitization and Reanalysis of Analog Sonobuoy (ASPER) Records.

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Final technical rept.,

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This project involved a multifaceted approach for making the database of analog sonobuoy records and solutions at Lamont more accessible to NAVO Stennis personnel. Each item on a list of seven deliverables was transmitted to NAVO, either in person or by electronic mail 1 New raytraced solutions of thirty-eight shallow-water sonobuoys recorded aboard Lamont ships in the East China Sea were obtained by iterative forward modeling and delivered as an ASCII file. 2 New software written to access the database of existing solutions was delivered and demonstrated. This software allows location of solutions by search within a specified geographical area, and extraction of the solutions for all previously analyzed Lamont sonobuoys. 3 The existing database of some 4169 sonobuoy solutions was checked, and several kinds of errors were detected and eliminated. These included wrong water depths, mislabeled buoys, and inconsistent or inadequate formats. The resulting database file, in ASCII form and suitable for use with the software described in 2, was delivered. 4 This item, Software and Documentation to access current data base of solutions is covered under item 2. 5, 6, 7. JDseis, a large software package for various kinds of interactive analysis of all types of seismic data, was modified to include the scaling of scanned images of analog data. This software, along with its accompanying documentation was delivered to Stennis, along with a large format 12 x 17 black-and-white Fujitsu Scanner. In December, 1993, the principal investigator traveled to Stennis, and for several days, demonstrated the use of the scanner, as well as this and the aforementioned software.

Subject Categories:

  • Acoustic Detection and Detectors

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