Sonar array signal simulation method and system based on signal processor, and simulator

Abstract

The invention relates to a sonar array signal simulation method and system based on a signal processor and a simulator. The method is completed in a standard signal processor hardware environment with a multi-core DSP as a core, and specifically comprises the following steps that firstly, ship radiation noise and marine environment noise are generated through simulation and serve as target signals; secondly, transmitting a target signal to a sonar array element; then, selecting one array element from array elements of the sonar array as a reference array element, calculating a receiving target signal of the reference array element, and carrying out corresponding inter-array-element time delay on a signal reaching each propagation path of other array elements of the array so as to obtain receiving target signals of other array elements; and finally, the received target signal is processed and transmitted to the outside. The system comprises a ship radiation noise generation module, a marine environment noise generation module, an array element domain signal simulation module and a data input and output module. The system has the characteristics of small size, high universality, high intelligent degree and the like.

Description

technical field [0001] The invention relates to the technical field of ocean exploration, in particular to a signal processor-based sonar array signal simulation method and simulator. Background technique [0002] The invention is based on the technical requirements of sonar. When a new type of sonar is developed, the sonar array signal simulator is a simulation device that can simulate the original array signal received by the sonar under different hydrological conditions. As an important part of the development of sonar technology, the simulation of the received signal required for the land test sonar can be completed under laboratory conditions, providing a debugging and testing environment for the sonar prototype, and preliminarily verifying the technical indicators. [0003] The standard signal processor consists of 1 main control board, 2 power supply boards, 2 switching boards and 9 signal processing boards. Among them, each signal processing board contains 4 TMS320C...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problems that the traditional sonar array signal simulator is large in size, inconvenient to carry, complex circuit, unable to be updated and upgraded on the original basis, and lack of versatility, the present invention uses modern digital signal processing technology combined with today's advanced multi-core DSP signal The sonar signal simulator developed by the processor can well solve the above problems. This invention has the typical characteristics of small size, strong versatility and high degree of intelligence, and can meet the testing requirements of different sonar systems through the setting of the host computer software.

Images