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Multi-channel intermediate-frequency data synchronization processing method and system for array imaging

A technology for intermediate frequency data and synchronous processing, which is applied in the transmission system, radio wave measurement system, and the use of re-radiation, etc., can solve the problems of waste of resources, affect the efficiency of array imaging testing, and fail to realize phase synchronization of multi-channel intermediate frequency acquisition, etc., to achieve Phase synchronization, the effect of improving test efficiency

Inactive Publication Date: 2019-11-08
CHINA ELECTRONIS TECH INSTR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Array imaging will not be possible without phase synchronization of multi-channel IF acquisitions
For the processing of intermediate frequency data, most of the current methods are to process data in FPGAs of different channels or perform data calculation processing on data of different channels in the same FPGA according to different channel data. Large waste, and can not guarantee fast synchronous processing of multi-channel data, which will affect the test efficiency of array imaging

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  • Multi-channel intermediate-frequency data synchronization processing method and system for array imaging
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  • Multi-channel intermediate-frequency data synchronization processing method and system for array imaging

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Embodiment 1

[0043] Such as figure 2 As shown, the multi-channel intermediate frequency receiver device provided by the present disclosure is used to implement a multi-channel intermediate frequency data synchronization processing method, including a processor and a plurality of intermediate frequency acquisition and processing boards;

[0044] The processor is connected to each IF acquisition board through the acquisition trigger connection,

[0045] The intermediate frequency acquisition and processing board is connected to the processor through the bus for the interaction of multi-channel intermediate frequency data.

[0046] As a preferred embodiment, the intermediate frequency acquisition and processing board sets the period reference signal compensation trigger signal to the time of different intermediate frequency acquisition and processing boards;

[0047] Further preferably, the periodic reference signal is periodically calibrated through a synchronous clock domain, and the peri...

Embodiment 2

[0051] Embodiment 2, the present disclosure provides a multi-channel intermediate frequency data synchronous processing method for array imaging,

[0052] Such as image 3 As shown, the present disclosure realizes the phase synchronization principle diagram of a multi-channel intermediate frequency receiver, and the specific steps are:

[0053] Receive the trigger signal for intermediate frequency data sampling, and send the trigger signal to the intermediate frequency acquisition and processing board;

[0054] After the intermediate frequency acquisition and processing board receives the trigger signal synchronously, it starts to perform ADC sampling on the intermediate frequency data of multiple channels, and the phase of the ADC sampling of each channel is synchronized;

[0055] The intermediate frequency acquisition and processing board transmits the intermediate frequency data obtained by multi-channel sampling to the processor;

[0056] The processor receives multi-cha...

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Abstract

The disclosure provides a multi-channel intermediate-frequency data synchronization processing method and system for array imaging. A processor is connected to each intermediate-frequency acquisitionboard card through an acquisition trigger connecting wire; and the intermediate-frequency acquisition board cards connected with the processed by buses are used for interaction of multi-channel intermediate-frequency data. The processor receives trigger signals for sampling the intermediate-frequency data and sends the trigger signals to the intermediate-frequency acquisition board cards. After the intermediate-frequency acquisition board cards receive the trigger signals synchronously, ADC sampling is performed; and the processor processes the multi-channel data rapidly and synchronously. Compared with the existing multi-channel intermediate-frequency acquisition and digital processing method, the multi-channel intermediate-frequency data synchronization processing method and system havethe following beneficial effects: phase synchronization of multi-channel intermediate-frequency signal acquisition in array imaging is realized; rapid array imaging is realized by fast synchronous digital processing of acquired multi-channel data; and the imaging test efficiency is improved.

Description

technical field [0001] The disclosure relates to a multi-channel intermediate frequency data synchronous processing method and system for array imaging. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] Traditional microwave and millimeter wave imaging systems mostly form synthetic apertures through mechanical scanning to achieve high-resolution imaging of the target laterally. However, this mechanical scanning has the problems of long scanning time and low test efficiency, which cannot meet the needs of fast imaging. In order to solve the problem of low efficiency of traditional pure mechanical scanning test, at present, most of them adopt multi-transmit and multi-receive array imaging schemes. The transmitting antennas are sequentially controlled by high-speed electronic switches to transmit signals, and multiple receiving antennas receiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/90H04B1/16
CPCG01S13/90H04B1/16
Inventor 米郁孙超常庆功王亚海年夫顺
Owner CHINA ELECTRONIS TECH INSTR CO LTD
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