Solar radio burst variable resolution spectrum device based on high speed AD acquisition card and method thereof

Abstract

The invention discloses a solar radio burst spectrum device based on a high speed AD acquisition card to analyze and study solar radio burst at different time and frequency resolutions. The system comprises a parabolic antenna, a low noise amplifier, the high-speed AD acquisition card, a computer, a high-speed solid state hard disk, c language processing software, FPGA internal threshold judgment software, Matlab processing software and labview processing software. The device amplifies a solar radio signal and sends the signal to the FPGA in AD conversion digital quantity. The sum of the power spectrum is acquired. When the sum is greater than a set threshold value, solar radio burst occurs, and the system intensively collects data. When the sum is less than the threshold value, solar radio burst does not occur, and the system sparsely collects data. The data are uploaded to a computer through a PCIe interface and are stored in the solid-state hard disk. At night, FFT operation of different length is carried out on the stored data to acquire a solar radio burst intensity graph at different time and frequency resolutions.

Description

technical field [0001] The invention relates to the technical field of electronic instruments, specifically an instrument device for solar radio storm spectrum observation designed by using a high-speed AD acquisition card, which can conveniently change the time and frequency resolution of the observed signal spectrum, and is convenient for users to study solar Explosion mechanism of radio bursts. Background technique [0002] Solar radio is the only celestial body radio radiation that can achieve high-resolution and accurate measurement. It captures the eruption events of solar radio bursts, analyzes and studies them with different time and frequency resolutions, and can observe solar radio bursts from different angles, and can conduct in-depth research on its The law and mechanism of the outbreak have important scientific research value. Now there are many solar radio observation stations in the world. Some advanced observation stations can set different time resolution a...

AI Technical Summary

Problems solved by technology

Now there are many solar radio observation stations in the world. Some advanced observation stations can set different time resolution and frequency resolution observations, but once set, they can observe radio signals with a fixed resolution. If they are modified, they can only observe future radio signals. Signal, the data stored in the system is frequency domain data, the frequency resolution cannot be changed for the same radio burst, and the time resolution usually superimposes the signal to increase the time, and the same radio burst event cannot be compared and analyzed from different resolutions and multiple angles

Most of the observation station data acquisition systems currently in operation were built a few years ago. Electronic technology devices and computer technology are still subject to many restrictions. For example, the applied AD sampling rate is relatively low, and the general signal bandwidth is less than 60MHz. -450MHz, according to the signal bandwidth segmented acquisition digitization, there are many real-time data channels, it is very difficult to store, so the data is converted into frequency domain signals, and then the frequency domain signals are spliced ​​and stored and displayed

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