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Radar multi-channel data acquisition and real-time processing device

A real-time processing and data acquisition technology, applied in radio wave measurement systems, instruments, etc., can solve problems such as inability to complete on-chip real-time processing, and achieve the effects of strong real-time signal processing, convenient verification and data analysis, and multiple receiving channels

Inactive Publication Date: 2019-09-03
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
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Problems solved by technology

[0005] The purpose of the present invention is to solve the deficiency that traditional multi-channel data acquisition devices in the prior art cannot complete on-chip real-time processing, and propose a radar multi-channel data acquisition and real-time processing device

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Embodiment Construction

[0031] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0032] see figure 1 , the present invention proposes a radar multi-channel data acquisition and real-time processing device, including an eight-channel analog-to-digital converter 110 , a clock synchronization unit 120 , five real-time processing units, four storage units and a switch matrix 260 .

[0033] In this embodiment, the clock synchronization unit 120 provides synchronization signals for the eight data acquisition channels, and the eight analog-to-digital converters 110 are evenly distributed in the first to fourth real-time processing units, and perform analog intermediate frequency signals input to the eight data acquisition channels. Band-pass sampling processing, so that the input eight-channel analog IF signals are converted into eight-channel digital IF signals after band-pass sampling processing. Each of the first to fourth real-time pro...

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Abstract

The invention provides a radar multi-channel data acquisition and real-time processing device, belonging to the field of radar signal acquisition and processing. Functions such as parallel multi-channel acquisition, target ranging and angle measurement are completed, and the on-chip real-time data processing problem of the existing multi-channel data acquisition device is solved. Eight channels ofinput signals are subjected to data sampling, digital down-conversion, target direction-of-arrival estimation and other processing, and estimation on parameters such as the linear chirp rate, the distance and the azimuth of target signals is completed. The device comprises an eight-channel analog-to-digital converter, five FPGA real-time processing units, a clock synchronization unit and four storage units, wherein the FPGAs from the first to the fourth complete data parallel acquisition and real-time processing of the eight channels; an IFDL high-speed interface is adopted between adjacent FPGAs for data transmission; and the fifth FPGA controls the clock synchronization unit and exchange data to an upper computer. As only a data processing result is outputted through a PCIE high-speed serial bus, the data transmission amount is reduced, and the system processing efficiency is improved.

Description

technical field [0001] The invention belongs to the field of radar signal acquisition and processing, in particular to a radar multi-channel data acquisition and real-time processing device. Background technique [0002] In large array imaging radar, phased array radar, and distributed radar systems, there are multiple transmission and reception channels, and the received signal has the characteristics of large signal bandwidth and high pulse repetition frequency. Therefore, its data acquisition system needs to have multi-channel synchronous data acquisition, high-speed Acquisition and real-time processing capabilities. However, the existing radar multi-channel signal acquisition devices usually only complete the functions of multi-channel data acquisition and data storage, and process the recorded data offline, which limits the application environment of the multi-channel radar system. [0003] In the prior art, the radar signal acquisition device realizes echo signal acqu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/41G01S7/02
CPCG01S7/02G01S7/41
Inventor 黄钰林聂宪波补源源张永超张寅裴季方杨建宇
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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