Hydroacoustics, tom 7

1. Pressure distribution and beam pattern of the parametric acoustic arrays.
2. Underwater behaviour of the hawaiian spinner dolphin and the atlantic spotted dolphin.
3. Strong Raman-Nath acoustooptical interaction in water.
4. Bubble motion in an acoustic resonator with flowing liquid.
5. Doppler effect in wideband sonars.
6. Pattern of spatial fish distribution in the sulejow reservoir monitored by horizontally beaming echosounder and by gill netting.
7. Underwater ship passport.
8. Target strength of freshwater fishes at 420 kHz measured in cages.
9. Multi-element sources focusing energy.
10. Stability of mechanical and dielectric parameters in pzt based ceramics.
11. Sound Propagation in shallow water.
12. Hydrographic echosounder for sounding inland waters.
13. Quadratic phase coupling phenomenon and its properties.
14. Characteristics of underwater noise generated by single breaking wave.
15. Transmission of digital signals in a nonstationary hydroacoustic channel.
16. Transmission properties of a shallow hydroacoustic channel.
17. Underwater object classification by means of acoustic method.
18. Harmonic ultrasound beams forming by means of radiating source parameters.
19. Measuring the impedance of ultrasonic transducers.
20. Multibeams simulator for sonar environment.
21. Investigation of influence of ship's generating set on emitted acoustic energy.
22. Acoustical (Echosounder and ADCP) observation of Calanus euxinus and Sagitta setosa in the Black.
23. Golay's codes sequences in ultrasonography.
24. Acoustic reconnaissance of fish and evironmental background in demersal zone in Southern Baltic.
25. A directional sonobuoy system for submarine detection.
26. Bioacoustic measurements by use of acoustic doppler current profiler.
27. Seasonal differences in situ measurements of the target strength of vendace (Coregonus albula L.) in lake Pluszne.
28. Foundation of the new method of numerical calculations of the nonlinear acoustics fields.
29. Communications underwater.
30. A Novel approach to bottom scattering using a narrow acoustic beam.
31. Artifical neural networks as frequency filters.

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