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Acoustic underwater beacon signal processing system based on FPGA

An underwater beacon and signal processing technology, applied in beacon transmitters, radio wave measurement systems, measurement devices, etc., can solve the problems of poor real-time performance, poor anti-interference ability, and high power consumption, and achieve real-time computing requirements. Effect

Active Publication Date: 2020-08-25
ZHEJIANG UNIV OF TECH
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Problems solved by technology

[0004] In order to overcome the problems of poor anti-interference ability, high power consumption, and poor real-time performance of the existing acoustic underwater beacon signal processing system, the present invention provides a system based on Acoustic underwater beacon signal processing system based on FPGA

Method used

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  • Acoustic underwater beacon signal processing system based on FPGA
  • Acoustic underwater beacon signal processing system based on FPGA
  • Acoustic underwater beacon signal processing system based on FPGA

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Embodiment Construction

[0038] In order to make the technical implementation of the present invention more clear, the present invention will be further described below in combination with specific schematic diagrams.

[0039] refer to figure 1 and figure 2 , an FPGA-based acoustic underwater beacon signal processing system, including high-speed AD acquisition module, DDR2 storage module, FPGA module, duty circuit module, digital pulse signal transmission module, TVG control module, SD card storage module and serial port communication module . Among them, the FPGA module includes a logic control module, an orthogonal demodulation module, a low-pass filter module, a down-sampling module and a matched filter module;

[0040]The high-speed AD acquisition module is connected with the signal conditioning board of the underwater beacon transponder, and the echo signal received by the underwater acoustic transducer enters the high-speed AD acquisition module after conditioning to do 80MHz frequency, 16-bi...

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Abstract

The invention discloses an acoustic underwater beacon signal processing system based on an FPGA, and relates to the field of acoustic positioning and high-speed digital signal processing. The system comprises a high-speed AD acquisition module, a DDR2 storage module, an FPGA module, an on-duty circuit module, a digital pulse signal transmitting module, a TVG control module, an SD card storage module and a serial port communication module. The system is good in anti-interference capability, low in power consumption and good in real-time performance.

Description

technical field [0001] The invention belongs to the field of acoustic positioning and high-speed digital signal processing, in particular to an FPGA-based acoustic underwater beacon signal processing system. Background technique [0002] In the exploration and development of marine resources, underwater acoustic positioning technology is one of the indispensable navigation technologies because of its stable and high-precision positioning capabilities. According to the length of the baseline, the hydroacoustic positioning system can be divided into long baseline, short baseline and ultra-short baseline. Acoustic underwater beacons can be applied to the above three underwater acoustic positioning technologies. The acoustic underwater beacons are installed on the measured carrier, and the time delay difference between the underwater target sound source and each array element is determined by transmitting and receiving the response signal. Target distance, so as to realize the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S1/80
CPCG01S1/802
Inventor 陈朋陈诺赵冬冬王海霞梁荣华
Owner ZHEJIANG UNIV OF TECH
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