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Multi-beam fishing sonar system with double transducer arrays combined for transmitting and receiving

A transducer array, transducer technology, applied in radio wave measurement systems, instruments, utilization of re-radiation, etc., can solve the problems of high hardware cost, high system complexity, and high signal processor requirements, so as to reduce the complexity , the effect of reducing the number and reducing the amount of calculation

Pending Publication Date: 2020-04-24
FISHERY MACHINERY & INSTR RES INST CHINESE ACADEMY OF FISHERY SCI
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Problems solved by technology

The number of receiving / transmitting channels of the system is equal to the number of arrays, and the signal processing needs to have the computing and processing capabilities corresponding to the number of arrays. The system complexity is high, the hardware cost is high, and the requirements for signal processors are also high.

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  • Multi-beam fishing sonar system with double transducer arrays combined for transmitting and receiving
  • Multi-beam fishing sonar system with double transducer arrays combined for transmitting and receiving
  • Multi-beam fishing sonar system with double transducer arrays combined for transmitting and receiving

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Embodiment Construction

[0028] According to the attached Figure 2 to Figure 10 , give a preferred embodiment of the present invention, and give a detailed description, so that the functions and characteristics of the present invention can be better understood.

[0029] see figure 2 , a multi-beam fishing sonar system with dual-transducer arrays combined for sending and receiving according to an embodiment of the present invention includes a signal processing unit 1, a receiving transmitter unit 2 and a transducer array 3; the transducer array 3 includes M rows and N columns 31, M and N are natural numbers, and M is an even number; receiving transmitter unit 2 includes M / 2 rows and N columns receiving and transmitting channels 21; every adjacent two arrays 31 of each row are connected with a receiving and transmitting channel Channel 21 ; the receiving and transmitting channel 21 is connected to the signal processing unit 1 .

[0030] Wherein, each receiving and transmitting channel 21 comprises a...

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Abstract

The invention provides a multi-beam fishing sonar system with double transducer arrays combined for transmitting and receiving. The multi-beam fishing sonar system comprises a signal processing unit,a receiving and transmitting machine unit and a transducer array, wherein the transducer array comprises M rows and N columns of oscillators, M and N are natural numbers, and M is an even number; thereceiving and transmitting machine unit comprises M / 2 rows and N columns of receiving and transmitting channels; every two adjacent arrays in each column are connected with one receiving and transmitting channel; and the receiving and transmitting channel is connected with the signal processing unit. According to the multi-beam fishing sonar system with the double transducer arrays combined for transmitting and receiving, the number of underwater acoustic transmitting and receiving channels can be reduced by half, the signal processing calculation amount is also reduced by half, and the complexity of the system is greatly reduced.

Description

technical field [0001] The invention relates to the field of marine fishery multi-beam fishery sonar systems, in particular to a multi-beam fishery sonar system with dual transducer arrays combined for sending and receiving. Background technique [0002] Fishing sonar (fish finder), as one of the most widely used and typical fishing aids in marine fishery, is the main tool for detecting the position, size and movement of marine fish schools using hydroacoustic methods. Fish finder types can be divided into vertical single-beam fish finder, horizontal fish finder, vertical dual-frequency fish finder, split-beam fish finder and multi-beam fishing sonar, among which multi-beam fishing sonar can obtain farther The spatial detection distance and higher angular resolution capabilities are of great help to the improvement of fishing efficiency in pelagic fishery trawling and purse seine fishing. use of scale. [0003] The traditional multi-beam fishing sonar uses a multi-array pl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S15/96G01S7/521
CPCG01S15/96G01S7/521G01S7/523G01S15/42G01S7/534
Inventor 李国栋魏珂陈军
Owner FISHERY MACHINERY & INSTR RES INST CHINESE ACADEMY OF FISHERY SCI
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