Quarterly Progress Report Number 3, 1 July-30 September 1968.
Abstract
Defense Research Laboratory (DRL) personnel assisted in calibrating the receiving portion of the sonar system. Repeating the installation checkout required many calibration adjustments, the most troublesome of which was the correction of tape path alignment errors on the PME. Standard acoustic measurements were made on the system transmitter and receiver. Audio scanner receive sensitivity of -17 dB re 1 microbar was measured, with side lobe suppression a relatively poor 13 dB. The receive bandwidth was modified for the testing project; the measured response is shown on Fig. 1. A few individual stave measurements were performed with the results shown on Figs. 2 and 3. Figure 2 shows the receiving response of stave 1, and Fig. 3 shows a comparison of the acoustic signal response of several transducers staves. The staves were connected to the preamplifiers during these measurements.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 05, 1968
- Accession Number
- ADA068954
Entities
Organizations
- University of Texas at Austin