Ship wake flow echo signal source system and realizing method thereof

Abstract

The invention discloses a ship wake flow echo signal source system and a realizing method thereof. The ship wake flow echo signal source system comprises a master control module, a data interaction module and a ship wake flow echo signal generation module; the master control module is used for transmitting command and data to the ship wake flow echo signal generation module through the data interaction module; the data interaction module is used for realizing the command and a data transmission function from the master control module to the ship wake flow echo signal generation module; and the ship wake flow echo signal generation module is used for calculating a ship wake flow echo signal and outputting the ship wake flow echo signal. The realizing method of the ship wake flow echo signal comprises a six-grade pipelining processing array for finishing calculation and processing step by step from a step of reading mean value and mean-square deviation data of starting commands and gaussian white noises to a step of outputting the ship wake flow echo signal. The system and the realizing method disclosed by the invention are designed on the basis of the actual physical generation course of the ship wake flow echo signal and have the advantages of simple principle, wide range of application, easy realization and popularization.

Description

technical field [0001] The present invention mainly relates to the field of ship wake detection equipment, in particular to a ship wake echo signal source system mainly used in a ship simulation system and a ship wake detection system, and a specific method for realizing the system . Background technique [0002] A surface ship in motion produces a track, or wake. A large number of randomly distributed bubble scatterers in the ship's wake scatter the incident acoustic pulses from the sound source, and these scattered echoes act on the receiving array of the ship's wake echo signal to form a ship wake echo signal . [0003] At present, the research on the ship wake echo signal source generally adopts a relatively simple model. The first known ship wake echo signal source is limited to satisfying the needs of the sonar equation, and the focus is on the ship wake echo signal source. In the research of the wake echo signal strength and the echo level of the ship wake, this re...

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Problems solved by technology

[0003] At present, the research on the ship wake echo signal source generally adopts a relatively simple model. The first known ship wake echo signal source is limited to satisfying the needs of the sonar equation, and the focus is on the ship wake echo signal source. In the research of the wake echo signal strength and the echo level of the ship wake, this research method is only applicable to the case where the sound source emits a signal with a long pulse width, and cannot reflect the time domain characteristics of the ship wake echo signal , as the signal processing method with signal waveform processing ability is gradually applied in the ship wake detection system, the processing method relying solely on energy can no longer adapt to the ship wake signal of the ship simulation system and ship wake detection system. Source performance requirements

The second known method is to simplify the wake echo signal of the ship into the reflection of the incident pulse of the sound source on each plane layer of the wake at different depths, and the simplified wake echo signal of the ship is a certain generation in the time domain. The extended pulse, this simplified model is effective for the research of some simple ship wake detection systems, but it is not enough for ship wake detection systems with complex signal waveform processing functions

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