Shore-based high-frequency multi-beam image sonar system

Abstract

The invention provides a shore-based high-frequency multi-beam image sonar system. The shore-based high-frequency multi-beam image sonar system comprises a display control unit, a transmitter, a transmitting array, a receiving array, a receiver and a signal processor, wherein the display control unit sends a sonar working instruction and the working parameter information, receiving data processedby the signal processor, displaying sonar images in real time, and receiving sonar sensor data, a transmitter signal source generates multiple paths of transmitting pulse signals according to the sonar working instruction, adjusts multiple paths of transmitting time delay according to the working parameter information, amplifies the power of the multiple paths of transmitting signals and transmitsthe amplified signals to the transmitting array, the receiving array receives an acoustic signal returned by the target and sends the acoustic signal to the receiver, the receiver completes digital acquisition of a target return sound signal, and the signal processor forms a plurality of receiving beams according to the digital acquisition signals, performs autocorrelation calculation of each beam in combination with signals transmitted by the transmitter signal source after the spatial beams are formed, and sends the calculated signals to the display control unit.

Description

technical field [0001] The invention relates to the technical field of underwater imaging, in particular to a shore-based high-frequency multi-beam image sonar system. Background technique [0002] There are many types of high-resolution image sonar, which are widely used, and can be used for underwater environment monitoring, dam leakage detection, forward-looking obstacle avoidance during navigation, underwater anti-terrorism warning, etc. In the underwater short-range defense of important ports, most of the fixed installations are early warning sonars, which are responsible for early warning of relatively long-distance threat targets; and for short-range target threats, especially at the entrance and exit of the channel, there is a lack of artificial direct The means of participating in target identification can more effectively carry out secondary confirmation of threatening targets and barrier blockade of waterways. In addition, the defense at the port needs a combinat...

AI Technical Summary

Problems solved by technology

However, this solution only provides a hardware structure, and does not disclose the way of beam transmission and reception and how to process the received beam to obtain high-resolution real-time imaging

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