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Multiplex pulse synchronization method based on optical fiber transmission

A multi-channel pulse, optical fiber transmission technology, applied in the field of radar, can solve the problems of poor synchronization performance, and achieve the effect of high reliability, easy engineering implementation, and simple implementation.

Inactive Publication Date: 2019-09-10
CNGC INST NO 206 OF CHINA ARMS IND GRP
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Problems solved by technology

[0006] In order to solve the problem of poor synchronization performance of the existing pulse synchronization technology in long-distance transmission, the present invention proposes a multi-channel pulse synchronization method based on optical fiber transmission

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  • Multiplex pulse synchronization method based on optical fiber transmission
  • Multiplex pulse synchronization method based on optical fiber transmission
  • Multiplex pulse synchronization method based on optical fiber transmission

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Embodiment Construction

[0022] The present invention will now be further described in conjunction with the embodiments and accompanying drawings:

[0023] The current mainstream FPGA (Field Programmable Gate Array) chip integrates a dedicated high-speed serial data transceiver Rocket I / O module, enabling the FPGA to realize optical fiber data transmission. The FPGA of the pulse sending board generates special characters representing pulse signals according to the radar system timing, and sends them to multiple receiving boards through equal-length optical fibers; each receiving board uses the same reference clock to recover the pulse signals to realize the transmission of multiple synchronous pulses. Due to the stable and mature optical fiber data transmission technology, the technology has engineering practicability.

[0024] refer to figure 1 , figure 2 , the concrete realization steps of the present invention are as follows:

[0025] Step 1. Build a hardware platform for pulse synchronization ...

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Abstract

The invention relates to a multiplex pulse synchronization method based on optical fiber transmission, and mainly solves the problems in an existing pulse synchronization technology that synchronization performance is poor on an aspect of long-distance transmission, and implementation cost is lowered. The implementation process of the method comprises the following steps that: 1: a pulse sending plate FPGA (Field Programmable Gate Array) utilizes a reference clock to generate a pulse signal, a special character represents a pulse signal, and the pulse signal is sent out through multiple pathsof equal-length optical fibers; 2: after each pulse receiving plate detects the special character in the optical fiber data, the original pulse signal is recovered; 3: the position of the recovered pulse is regulated, the rising edge of the regulated pulse is positioned on the middle position of the recovered pulse, the reference clock is used for latching the regulated pulse, and a final synchronous pulse is obtained. By use of the method, the problem that the pulse is not synchronous due to clock jitter is solved, the equal length optical fiber is used for transmitting the synchronous pulsesignal, and the optical fiber data transmission technology is mature and stable, is suitable for long-distance transmission, is simple in implementation on the basis of the FPGA, and is easy in engineering implementation.

Description

technical field [0001] The invention belongs to the technical field of radar, relates to pulse synchronization of radar, can be used for transmission of synchronization pulses of radar front-end transceiver components, and meets engineering requirements. Background technique [0002] Now radars, especially military radars, need to have longer target detection distances and higher target detection accuracy in complex working environments, so more radar antenna units and larger antenna arrays are required. In the signal processing of large-scale digital array radar, the synchronization of the reference pulse signal received by the multi-channel antenna transceiver component of the radar front end must be ensured, and the reference signal is used as the synchronization signal for transceiver control. If any component is out of synchronization, the amplitude and phase characteristics of the transceiver components will be inconsistent, which will lead to the deviation of the dire...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/042H04B10/25
CPCG05B19/0423H04B10/2589H04B10/25891
Inventor 陈亮袁子乔崔向阳张军赵涛
Owner CNGC INST NO 206 OF CHINA ARMS IND GRP
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