A thunder signal generation system and a thunder signal simulation method

A technology of signal generation and thunder, which is applied in the direction of measuring ultrasonic/sonic/infrasonic waves, instruments, measuring devices, etc. It can solve the problems that special signals cannot be generated and signal generators are not applicable, and achieve good noise reduction effect and simple processing process Effect

Active Publication Date: 2019-07-12
SHAANXI NORMAL UNIV
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Problems solved by technology

But the signal generator can only generate simple waveforms, and cannot generate dedicated signals
Because of the need to study the effect of thunder signal on the germination of various seeds, the signal generator is not suitable

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  • A thunder signal generation system and a thunder signal simulation method
  • A thunder signal generation system and a thunder signal simulation method
  • A thunder signal generation system and a thunder signal simulation method

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Embodiment Construction

[0039] The technical solution of the present invention will now be further described in conjunction with the embodiments and the accompanying drawings.

[0040] figure 1 A schematic diagram of a thunder signal generating system provided by an embodiment of the present invention is shown, as figure 1 As shown, the thunder signal generation system of this embodiment is used to generate thunder signals with adjustable power, which includes a host computer, a thunder signal acquisition module, a USB transceiver module, a storage module, a digital-to-analog conversion module, and a power amplifier.

[0041] Among them, the thunder signal collector communicates with the USB transceiver module through the A storage module, and the thunder signal collector collects the thunder in nature with a preset sampling period, and stores the collected thunder signal in the A storage module in real time, and then passes The USB transceiver module uploads the Raytheon digital signal to the host ...

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Abstract

The invention provides a thunder signal generation system and a thunder signal simulation method. The method is characterized in that firstly, a thunder signal gatherer is used to collect thunder signals and transmit to an upper computer according to a preset sampling period, the upper computer uses a singular value decomposition method to decompose a correlation matrix constructed by the thunder signals so as to acquire a group of singular values which are arranged from large to small; then according to a minimum description length criterion, a singular value number representing the thunder signals is determined; and a SVD reconstruction signal is combined to realize thunder signal noise reduction; and finally, a thunder sample signal acquired through noise reduction is transmitted to a FPGA through a USB chip, and a digital-to-analogue conversion chip is used to take a thunder digital signal sampling period as a conversion time interval and convert a digital signal into an analog voltage signal, and the signal is output via a power amplifier so that the thunder signal with controllable power can be simulated. A simulation result shows that the singular value decomposition method has an obvious thunder noise reduction effect, and the thunder signal acquired through simulation has a consistent amplitude spectrum with the thunder sample signal.

Description

technical field [0001] The invention belongs to the technical field of thunder signal processing, and in particular relates to a thunder signal generation system and a thunder signal generation system which adopts a singular value decomposition method to reduce the noise of a sampled thunder signal, collects and simulates a thunder signal based on an FPGA, and has adjustable output power. mock method. [0002] technical background [0003] Thunder signals are better used in cultural relics security alarm systems and lightning protection technology research. However, in actual engineering, due to the influence of various environmental factors, the natural thunder that is usually collected is usually noisy thunder. Acoustic signals are inevitably subject to different degrees of noise pollution. In order to accurately analyze the changing characteristics of the observed signals, it is extremely urgent to suppress noise and improve the signal-to-noise ratio. Although many analyz...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01H17/00
CPCG01H17/00
Inventor 曹辉徐翔于雪张丽丽惠潇潇郭乐乐李涛
Owner SHAANXI NORMAL UNIV
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