Acoustic butt joint device for Doppler sonar testing

Abstract

The invention relates to an acoustic butt joint device for Doppler sonar testing. The acoustic butt joint device comprises a supporting structure, a plurality of sliding rails and a plurality of butt joint structures. The supporting structure is used for supporting Doppler sonar. The plurality of sliding rails are connected to the supporting structure and arranged in a pairwise symmetrical mode. The plurality of butt joint structures are in one to one correspondence to the plurality of sliding rails. One end of each butt joint structure is provided with a receiving and transmitting energy converter, the receiving and transmitting energy converters are used for being in butt joint with an energy converter of the Doppler sonar, and the other end of each butt joint structure is fixed on a sliding block. The sliding blocks can slide and be fixed on the corresponding sliding rails. The angle between each butt joint structure and the corresponding siding rail can be adjusted. According to the acoustic butt joint device for the Doppler sonar testing, Doppler sonar uniform measurement on various sizes and intersection angles is achieved through adopting the sliding rail structures and the butt joint structures; the butt joint energy converters are pressed by springs, the energy converters can be consistent in array face pressure, and consistency of acoustic conduction of all channels is guaranteed; and a preprocessing circuit is packaged in a central electronic engine room, and therefore inaccuracy caused by transmission problems is reduced.

Description

technical field [0001] The invention relates to the technical field of Doppler sonar testing, in particular to a docking device for Doppler sonar testing. Background technique [0002] Doppler sonar is a sonar device that uses the Doppler effect to measure speed. Conventional array Doppler sonar usually generates a transmission signal by a transmitter and transmits it to multiple beam directions through a transducer, uses multiple channels to receive echoes separately, and obtains by solving the Doppler frequency shift in the echo signal of each channel Doppler sonar achieves the purpose of speed measurement for the relative speed of the bottom or water layer. It has been widely used in flow velocity measurement, navigation and other fields. [0003] Since the normal working environment of Doppler sonar is in water, it is usually necessary to compare the main functions and performance of Doppler sonar by comparing Doppler sonar with differential GPS data in navigation expe...

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Problems solved by technology

[0006] In the prior art, there are several major defects in the following aspects. One is to use a receiving transducer to collect the transmission signal of a certain channel of Doppler sonar, which cannot reflect the situation of all transmission channels of Doppler sonar; the other is the structure First, it can only be used for Doppler transducers of one shape and size; third, the compression force of the coupling surface of the Doppler transducer affects the acoustic conduction coefficient. The original structure cannot measure the compression force and cannot guarantee the compression Consistency of rear acoustic conduction

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