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FPGA-based Gaussian waveform generation method and system

A technology of Gaussian waveform generation system, which is applied in general control system, control/regulation system, pattern recognition in signal, etc., can solve problems such as difficulty in Gaussian waveform generation, and achieve convenient operation, high repetition frequency, and small waveform tailing Effect

Inactive Publication Date: 2021-02-09
CHINA PETROCHEMICAL CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a Gaussian waveform generation method and system based on FPGA, to solve the current difficult problem of Gaussian waveform generation

Method used

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  • FPGA-based Gaussian waveform generation method and system
  • FPGA-based Gaussian waveform generation method and system
  • FPGA-based Gaussian waveform generation method and system

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Embodiment Construction

[0027] The specific implementation manners of the present invention will be further described below in conjunction with the accompanying drawings.

[0028] Embodiment of Gaussian Waveform Generation Method

[0029] Gaussian waveform generation method of the present invention utilizes the mode of FPGA device digital synthesis, first produces the pulse waveform of required frequency by the IP core clock module in FPGA according to the center frequency of required generation Gaussian waveform, then by the DAC module in FPGA according to Gaussian waveform The data of the desired points of the pulse waveform and the resulting pulse waveform generate a Gaussian waveform. In ground-penetrating radar, in-hole radar and life detectors, which do not require high power, the detection distance is no longer the main problem, but the resolution is the main problem it faces. Therefore, the following takes the Gaussian waveform required by the radar in the well as an example to describe the ...

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Abstract

The invention relates to an FPGA-based Gaussian waveform generation method and system, and belongs to the technical field of digital information processing. According to the invention, the FPGA devicedigital synthesis mode is utilized, the clock frequency of an IP core of the FPGA is adjusted according to the center frequency of the Gaussian waveform to be generated to generate the pulse waveformwith the required frequency, a DAC module in the FPGA generates the Gaussian waveform according to data of points required by the Gaussian pulse waveform and the generated pulse waveform, and the generation of the Gaussian waveform is realized. Compared with Gaussian signals generated by a simulator, waveform trailing generated by the method is very small or even does not exist, the higher repetition frequency can be achieved due to a high-speed transmission interface and a high-update-speed transmission interface of the FPGA device, the frequency change of the waveform can be achieved only through software, and the operation is more convenient.

Description

technical field [0001] The invention relates to an FPGA-based Gaussian waveform generation method and system, belonging to the technical field of digital information processing. Background technique [0002] Due to its carrierless system, simple radar hardware structure, and high resolution brought by ultra-wideband spectrum, time domain shock pulse ground penetrating radar has been widely used, and it is also a relatively mature ground penetrating radar system. [0003] Time-domain pulse GPR signals generally use Gaussian-like shock pulses, because Gaussian pulses have similar characteristics in their frequency spectrum and time-domain waveforms, which is convenient for subsequent data processing and waveform analysis; therefore, first-order Gaussian pulses are often used in ground-penetrating radars The signal is used as the transmission signal used by the radar transmitter; there are various methods for generating the first-order Gaussian pulse signal, and the widely used...

Claims

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Application Information

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IPC IPC(8): G05B19/042G06K9/00
CPCG05B19/0423G06F2218/02G06F2218/00
Inventor 赵永刚常兴浩李功强冉利民李健伟赵景陈婵娟吉倩倩胡挺王丹白彬艳张儒李欣
Owner CHINA PETROCHEMICAL CORP
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