Detecting sonar for underwater buried objects based on parametric array

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...

AI Technical Summary

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

Images