Underwater acoustic field signal real-time generator

Abstract

The invention discloses an underwater acoustic field signal real-time generator, which comprises a multi-type signal sample generation module, a signal synthesizing module, a first data buffer, a second data buffer, a first-in-first-out (FIFO) buffer, a frame interrupt synchronization pulse generator and a hard clock generation module, wherein the second data buffer receives and forwards various waveforms generated by the signal sample generation module; the signal synthesizing module mixes the signal waveforms generated by the signal sample generation module and outputs the mixed waveforms; the first data buffer receives and forwards the multiple mixed waveforms generated by the signal synthesizing module; the FIFO buffer receivers data forwarded by the first data buffer and outputs the received signal; the frame interrupt synchronization pulse generator monitors the state of the FIFO buffer, generates a synchronization pulse signal according to the state and controls the first and second data buffers by the synchronization pulse signal; and the hard clock generation module provides a time reference. The signal real-time generator has a compact structure, runs stably and can be universally applied to various different types of sonars.

Description

technical field [0001] The invention relates to the technical field of underwater acoustic engineering, in particular to a real-time generator of underwater acoustic field signals. Background technique [0002] During the sonar repair process, the sonar receiving transducer and transmitting transducer have been completely removed from the marine environment in which it depends to function normally. Since the sonar receiving sensor cannot generate signals in the air, it is generally impossible to check the sonar according to the performance index of the whole machine under workshop conditions, and it is also impossible to control the repair quality of the sonar at the level of major and medium repairs before launching. [0003] In the development process of sonar and the comprehensive test of support, virtual sensor element-level sound field signals are also often required. The signal is a comprehensive signal of various sound field time series including ship radiation noise...

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Problems solved by technology

In the case of both task parallelism and functional versatility, unstable behaviors such as deadlocks are prone to occur

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