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Detecting sonar for underwater buried objects based on parametric array

A technology of buried objects and sonar, which is applied to measurement devices, re-radiation of sound waves, radio wave measurement systems, etc., can solve the problems of small range, low efficiency, and insufficient detection accuracy, and achieve the effect of improving detection accuracy and efficiency.

Inactive Publication Date: 2012-08-15
MIANYANG PUFA ELECTRONICS TECH
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  • Abstract
  • Description
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is that, aiming at the problems of insufficient detection accuracy, small range, and low efficiency in the prior art, the current existing problems are solved through the principle of parametric array and phased transducer array, and the expected effect is achieved

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  • Detecting sonar for underwater buried objects based on parametric array
  • Detecting sonar for underwater buried objects based on parametric array
  • Detecting sonar for underwater buried objects based on parametric array

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Embodiment Construction

[0010] The technical solution of the present invention will be described in further detail below with reference to the drawings and specific embodiments.

[0011] figure 1 The system signal processing framework is shown. It includes: the formation of the parametric array signal according to the control signal, the formation of the phased array signal according to the control signal, the denoising and extraction of the echo signal, and the classification and recognition of the detected object.

[0012] figure 2 A class D power amplifier is shown. It includes: an H-bridge circuit 1 for power amplification, and a matching network 2 for filtering and matching.

[0013] Using this device in the detection of underwater buried objects can well achieve the detection purpose.

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Abstract

The invention discloses a directional sound wave detector for underwater buried object detection and belongs to the technical field of underwater sonar of detection equipment. The detector comprises a control main machine, a display, a category-D power amplifier, a signal processing main machine and a transducer array. A controller coordinates various parts to operate synchronously, controls the pulse width and the frequency of the generated acoustic signals and outputs control instructions to the signal processing main machine. The signal processing main machine generates signals to the category-D power amplifier according to the control instructions. The category-D power amplifier is connected with a wide-band transducer which provides enough electric power drive. The wide-band transducer transforms the electric power provided by the category-D power amplifier to acoustical power and sends the acoustical power. Echo reflected by the detected objects is received by the transducer and echo signals are sent to the signal processing main machine which classifies and identifies the echo signals and sends detection results to the control main machine for display.

Description

technical field [0001] The invention relates to underwater sonar detection equipment, in particular to an underwater buried object detection sonar adopting parametric array technology. Background technique [0002] In view of the demand for underwater buried object detection, there are currently problems such as insufficient detection accuracy, small range, and low efficiency. The "Directional Acoustic Riverbed Buried Object Detector" independently developed by our company is based on the principle of parametric array, and emits a high-energy and high-directivity acoustic beam through a phased transducer array and analyzes and processes the echo signal to achieve detection. It can detect river bed buried objects in a large range and with high precision. Solve the existing problems and achieve the desired effect. [0003] Traditional acoustic detection mainly adopts chirp sonar technology, which has developed rapidly due to its advantages such as good repeatability, wide fr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S15/88
Inventor 陈敏黄彦鑫冉晓东舒旭吴新龙万晓伟
Owner MIANYANG PUFA ELECTRONICS TECH
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