A solar radio observation instrument, system and method

Abstract

The present disclosure discloses a solar radio observation instrument, system and method, comprising: two antennas, each of which is connected to the antenna main circuit via a coupler, both antenna main circuits are connected to a digital receiver, and the two couplers The amplitude calibration unit and the phase calibration unit are connected to the digital receiver, and the digital receiver is connected to the host computer; two antennas are used to receive solar radio signals, and the two radio signals are received by the digital receiver after passing through the antenna main circuit to form two time For the data in the two time domains, the host computer calculates the time domain delay of the two time domain data, and sends the time domain delay to the digital receiver for delay compensation of the two time domain data. Eliminate the electromagnetic wave delay of solar radio through a single turntable and dual antennas, and the host computer calculates the compensation factor and sends the FPGA corresponding compensation to achieve real-time compensation while reducing FPGA resource consumption.

Description

technical field [0001] The invention relates to the technical field of solar radio observation, in particular to a solar radio observation instrument, system and method. 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] At present, the solar radio 15-40GHz observation scheme adopts the superheterodyne frequency conversion sampling processing structure, such as figure 1 As shown in the figure, the collected solar radio high-frequency signal is down-converted to a low-IF signal, which is collected by an analog-to-digital converter ADC, and then subjected to fast Fourier transform to form a graph from the host computer spectrum. Although this method has a simple structure, the monitoring results are easily affected by the surrounding environment, interference and atmospheric turbulence, the system sensitivity is low, and the ability to suppre...

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Problems solved by technology

Although the structure of this method is simple, the monitoring results are easily affected by the surrounding environment, interference, and atmospheric turbulence. The system sensitivity is low and the ability to suppress interference is weak.

[0004] Moreover, when the existing solar radio 15-40GHz observation scheme performs amplitude calibration and phase compensation, the front end is mostly used to inject the calibration component into the channel, and the phase calculation and compensation are performed at the back end, as disclosed in the patent application number: 202010498823.7 A phased array transmission calibration device and method. Although the method can calculate and compensate the amplitude and phase, there are many calculation units and the calculation is complicated; the patent application number: 201911305600.8 discloses a method to improve the amplitude and phase consistency of the broadband frequency conversion receiving module The circuit, the result of this circuit adopts multi-stage frequency mixing and calibration, the structure is complex

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