A SYSTEM OF PULSE SIGNALS GENERATION FOR EXCITATION OF SUPERWIDEBAND HYDROACOUSTIC TRANSDUCERS
It is considered the concept of a multichannel excitation system for superwideband hydroacoustic transducers of the rod and waveguide types, providing the possibility of short acoustic pulses and signals of complex shape emitting. The principle of electrical excitation signals, forming by the system, is based on the software implemen-tation of solving the synthesis problem for the specified structural parameters of the transducer and the required shape of the acoustic signal followed by digital-analog conversion of the obtained digital data arrays is shown. The control mechanism and functional features of the excitation system are described as well as the results of system testing in a pulse mode taking into account the acoustic load of actual transducers forming the antenna array. Main directions of improving the electronic equipment of the excitation system in order to further perfor-mance and output power improvement, the length of the synthesized signals increase and the operating frequen-cy range expanding are specified.
Authors: I. S. Pesterev
Direction: Instrument Engineering and Information-Measurement Technologies
Keywords: Digital analog signal conversion, superwideband amplifier, pulse signals, frequency characteristics synthesis, superwideband transducer, computer modeling
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