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Maximum fault-tolerant design method in large digital array system driven by data stream

A digital array and fault-tolerant design technology, applied in the field of digital array radar, can solve the problems of large number of cables and difficult wiring of antenna cage, and achieve the effect of simplifying the debugging process

Active Publication Date: 2020-04-21
CNGC INST NO 206 OF CHINA ARMS IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method will cause an abnormally large number of cables in a large array, making it difficult to route cables in the antenna cage

Method used

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  • Maximum fault-tolerant design method in large digital array system driven by data stream
  • Maximum fault-tolerant design method in large digital array system driven by data stream
  • Maximum fault-tolerant design method in large digital array system driven by data stream

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Embodiment Construction

[0026] Now in conjunction with embodiment, accompanying drawing, the present invention will be further described:

[0027] The present invention mainly comprises following content and steps:

[0028] a) Build a distributed sampling platform, place the board including multi-channel sampling chips and FPGA chips on the front end of the radar antenna, corresponding to the receiving channel of the antenna front-end array element, and sample each channel to form a distributed sampling structure.

[0029] b) Since large digital arrays usually have a huge amount of computation, it is impossible to directly aggregate the data of all the above sampling channels into one processing board to complete DBF and related processing. At this time, multi-processing boards need to work together. Each processing board receives a certain amount of sampling data and outputs the processing results at the same time. That is, the data stream after sampling processing needs to be summarized among multi...

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Abstract

The invention relates to a maximum fault-tolerant design method in a large digital array system driven by data flow. The data of the normal branch is obtained through polling search and marked as theshared branch, and meanwhile, the data is copied to the branch marked as the broken branch, so that the data flow of the system can be maintained to be normal, the system can normally work as long asone distributed sampling unit works normally, and the maximum fault-tolerant capability is obtained.

Description

technical field [0001] The invention belongs to the technical field of digital array radar. The specific technologies involved include distributed sampling technology and data flow driving technology. The invention can avoid the system abnormality caused by the damage of a certain branch when the large-scale digital array radar is working, and simultaneously detect the working status of each branch in real time. Background technique [0002] Due to the rapid development of large-scale digital processing devices, more and more large-scale digital array radars, such as radar systems with more than 2,000 array elements, have entered the engineering development stage, and the resulting data transmission and reliability problems also stand out. In a dataflow-driven system, it is even more necessary to avoid system crashes caused by abnormal or disconnected dataflows. [0003] The traditional digital array radar uses a shielded equal-length coaxial cable to transmit the receive...

Claims

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Application Information

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IPC IPC(8): G06F30/30
Inventor 崔向阳田剑峰陈亮付学斌
Owner CNGC INST NO 206 OF CHINA ARMS IND GRP