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

A technology of dragging line arrays and system signals, which is applied in radio wave measurement systems, signal transmission systems, electrical signal transmission systems, etc., and can solve problems such as difficulty in maintaining normal operation of the system, lack of stability and real-time performance, and complex working environments, etc. problems, to achieve the effect of improving stability and reliability, high-speed transmission, and reliable transmission

Active Publication Date: 2016-07-13
苏州联视泰电子信息技术有限公司
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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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  • Signal loop transmission method for towed line array sonar system based on Ethernet
  • Signal loop transmission method for towed line array sonar system based on Ethernet
  • Signal loop transmission method for towed line array sonar system based on Ethernet

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Embodiment Construction

[0036] The following describes in detail the signal loop transmission method of the Ethernet-based towed line array sonar system of the present invention in conjunction with the accompanying drawings.

[0037] The Ethernet-based towed line array sonar system of the present invention includes several nodes and a bridge module, such as figure 1 As shown, each node includes a DSP processor, an Ethernet switch chip, a first port, and a second port, and the DSP processor is used to group the collected data into sampling data packets, maintain the count value of the data packet, and select according to the count value of the data packet The sending direction of the sampled data packet, the Ethernet switch chip is used to forward the sampled data packet according to the sending direction of the sampled data packet.

[0038] like figure 2 As shown, each node is arranged in sequence, and a bidirectional link is formed between the first port and the second port of two adjacent nodes t...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08C19/00G01S7/521
CPCG01S7/521G08C19/00
Inventor 周斯忠汤家兴
Owner 苏州联视泰电子信息技术有限公司
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