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Design and implementation method of multi-channel broadband electronic signal synchronous acquiring system

A technology of synchronous acquisition and electronic signal, applied in non-electrical signal transmission system, signal transmission system, instrument and other directions, can solve the problems of affecting array radar, narrowing of radar line of sight, poor buffering ability of digital beamforming effect, etc., to achieve strong economy and military benefits, achieving real-time effects

Inactive Publication Date: 2012-07-04
THE 724TH RES INST OF CHINA SHIPBUILDING IND
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Problems solved by technology

[0003] At present, there are some problems in the broadband multi-channel synchronous acquisition system: (1) The bandwidth is not wide enough, most of which are below 100M; (2) The synchronization performance is poor, which cannot reach the nanosecond level, which affects the effect of array radar digital beamforming; (3) The buffering ability Poor, making the azimuth gate and range gate of the digital array radar smaller, and the sight of the radar narrower (4) The real-time transmission of the acquisition results is poor
These problems seriously restrict the development of high-resolution, digital array radar

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  • Design and implementation method of multi-channel broadband electronic signal synchronous acquiring system
  • Design and implementation method of multi-channel broadband electronic signal synchronous acquiring system
  • Design and implementation method of multi-channel broadband electronic signal synchronous acquiring system

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Embodiment Construction

[0013] The broadband multi-channel synchronous acquisition system includes: high-speed AD conversion module, optical fiber convergence module, synchronous signal generation module and optical fiber input card module. Each high-speed AD conversion module is realized with an AD acquisition board. The total number of channels is 64, and 64 array units are connected externally. The high-speed AD conversion module includes 8 AD acquisition boards, and each board has 8 AD acquisition chips. The composition block diagram of the present invention is as shown in accompanying drawing.

[0014] The high-speed AD conversion module receives control commands from the terminal processor through optical fiber. These include range start, azimuth start, azimuth end, and range gate size. After the AD acquisition board receives the synchronous signal from the synchronous signal generating module, it starts to collect data within a given distance, azimuth wave gate and wave gate size according ...

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Abstract

The invention relates to a design and implementation method of a multi-channel broadband electronic signal synchronous acquiring system, which realizes synchronously acquiring 64 broadband electronic signal array units. The system consists of a high speed AD (analog-to-digital) conversion module, an optical fiber aggregation module, a synchronous signal generating module and an optical fiber ingest card module and the like; the high speed AD conversion module receives a control command from a terminal processor through an optical fiber; an AD acquiring plate acquires data according to the requirement of the control command after receiving the synchronous signal of the synchronous signal generating module. After the acquisition is finished, the high speed AD conversion module transmits the acquired data to the optical fiber aggregation plate and the optical fiber ingest card in sequence, and finally the data is uploaded to the terminal processor through a PCIE (Peripheral Component Interface Express) bus. The method provided by the invention has a wide application prospect in high resolution digital array radar and other fields requiring broadband digital beam synthesis and the like.

Description

technical field [0001] The invention relates to a design and realization method of a multi-channel broadband electronic signal synchronous acquisition system. It can be used for real-time data acquisition of multi-channel broadband signals such as high-resolution digital array radar. Background technique [0002] Broadband acquisition technology is an important technical means and premise to realize fine analysis and research on wideband electronic signals. In the field of modern radar equipment and other technologies, the instantaneous large bandwidth signal is an important technical measure to realize the processing of radar range resolution. When the instantaneous bandwidth of the signal is 200MHz, the distance resolution of the radar can reach 0.75 meters, realizing high-precision detection; and it can effectively suppress clutter interference, so that the radar can detect weak targets in complex interference backgrounds. [0003] At present, there are some problems in...

Claims

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Application Information

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IPC IPC(8): G08C23/06
Inventor 李赛辉
Owner THE 724TH RES INST OF CHINA SHIPBUILDING IND
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