Signal loop transmission method for towed line array sonar system based on Ethernet

Abstract

The invention discloses a signal loop transmission method for a towed line array sonar system based on Ethernet. The towed line array sonar system comprises a plurality of nodes and a bridging module, wherein bidirectional loops of which the transmission directions are opposite to each other are formed through the Ethernet between the nodes and the bridging module; sampling data packets of each node are simultaneously transmitted to the bridging module in two directions; a link setting instruction is transmitted to the nodes from the bridging module so as to inform the nodes to modify sampling data packet transmitting directions in case of any situation as follows: a, the towed line array sonar system is initialized; b, the bridging module receives sampling data packets from nodes which are marked as offline; c, the bridging module analyzes the received sampling data packets, and the result shows that the sampling data packets are lost. The signal loop transmission method for the towed line array sonar system based on the Ethernet, which is disclosed by the invention, is simple to achieve, data can be transmitted stably and reliably in real time, the system can work stably continuously in case of towed line array link faults, and thus the stability and reliability of the system are improved.

Description

technical field [0001] The invention relates to the technical field of towed line array sonar, in particular to an Ethernet-based signal loop transmission method of a towed line array sonar system. Background technique [0002] Towed line array sonar is also called "towed array sonar". Measuring submarine radiation noise, long-range monitoring, direction finding and identification, and some can also be used for ranging. [0003] The towed line array is generally composed of a leading segment, an instrument segment, a base array segment, a rear guiding segment and a tail end. The length of the array is tens to hundreds of meters, and the working depth is variable. The sensors in the towed line array include hydrophones. Module and non-acoustic module. The non-acoustic module is used to monitor formation and attitude. The towed line array sonar array has a large size and low operating frequency, which is conducive to line spectrum detection and can detect targets covertly fro...

AI Technical Summary

Problems solved by technology

[0004] The total length of towed cables and line arrays can reach several thousand meters, the transmission distance is long, and the working environment is complex. At present, most transmission technologies are not stable and real-time, and once a link failure occurs, the system will be difficult to maintain normal Therefore, it is of great engineering practical value to study the loop transmission and link fault recovery methods of the towed line array sonar system

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