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Solar radio spectrum analysis method and system based on multi-channel FFT algorithm

A solar radio and spectrum analysis technology, applied in the field of solar radio spectrum analysis, can solve problems such as high difficulty in implementation, low processing delay, and low algorithm complexity

Active Publication Date: 2021-03-05
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Multi-channel parallel FFT algorithm and two-dimensional FFT algorithm are suitable for parallel FFT transformation of multi-channel data. When implemented in FPGA, the processing delay is low and the algorithm complexity is low. However, when there are too many channels (>8 channels), this Two algorithms occupy too much hardware resources
[0004] Based on the parity-separated FFT transformation algorithm, N-point FFT transformation is used to realize 4N-point FFT transformation, and complex FFT transformation is performed through two N-point FFT cores in FPGA, and then the parallel signal output by two N-point FFT cores is processed by algorithm , and finally get the transformation output of 4N-point FFT, and obtain a total of 4N-point solar radio spectrum of 4 channels. This method occupies less hardware resources and can effectively improve the utilization efficiency of hardware resources. However, when the number of channels is too large (>8 channels) , using this algorithm to realize multi-channel parallel FFT transformation, the hardware implementation complexity is high and the implementation is difficult

Method used

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  • Solar radio spectrum analysis method and system based on multi-channel FFT algorithm
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  • Solar radio spectrum analysis method and system based on multi-channel FFT algorithm

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Embodiment 1

[0034] This embodiment provides a solar radio frequency spectrum analysis method based on a multi-channel FFT algorithm;

[0035] like figure 1 As shown, the solar radio spectrum analysis method based on the multi-channel FFT algorithm includes:

[0036] S101: Acquiring solar radio signals;

[0037] S102: Transform the received solar radio signal based on a multi-channel FFT algorithm to obtain a solar radio spectrum.

[0038] Further, said S101: Acquiring solar radio signals; specific steps include:

[0039] The antenna is used to receive the solar radio signal, and the solar radio signal is amplified and filtered through the front-end analog circuit system. The high-speed analog-to-digital converter ADC completes the data collection and converts it into a digital signal. The digital signal is transmitted to the FPGA through the high-speed interface JESD204B.

[0040] Among them, the high-speed analog-to-digital converter ADC is configured as a single-channel 3Gsps samplin...

Embodiment 2

[0130] This embodiment provides a solar radio frequency spectrum analysis system based on a multi-channel FFT algorithm;

[0131] Solar radio spectrum analysis system based on multi-channel FFT algorithm, including:

[0132] an acquisition module configured to: acquire solar radio signals;

[0133]The transformation module is configured to: transform the received solar radio signal based on a multi-channel FFT algorithm to obtain a solar radio spectrum.

[0134] It should be noted here that the above acquisition module and transformation module correspond to steps S101 to S102 in the first embodiment, and the examples and application scenarios implemented by the above modules and the corresponding steps are the same, but are not limited to those disclosed in the first embodiment above content. It should be noted that, as a part of the system, the above-mentioned modules can be executed in a computer system such as a set of computer-executable instructions.

[0135] The desc...

Embodiment 3

[0138] This embodiment also provides an electronic device, including: one or more processors, one or more memories, and one or more computer programs; wherein, the processor is connected to the memory, and the one or more computer programs are programmed Stored in the memory, when the electronic device is running, the processor executes one or more computer programs stored in the memory, so that the electronic device executes the method described in Embodiment 1 above.

[0139] It should be understood that in this embodiment, the processor can be a central processing unit CPU, and the processor can also be other general-purpose processors, digital signal processors DSP, application specific integrated circuits ASIC, off-the-shelf programmable gate array FPGA or other programmable logic devices , discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, o...

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Abstract

The invention discloses a solar radio spectrum analysis method and system based on a multi-channel FFT algorithm. The method comprises the following steps: acquiring a solar radio signal; and converting the received solar radio signal based on the multi-channel FFT algorithm to obtain a solar radio frequency spectrum. The FFT step comprises the process: 1, carrying out transverse FFT, and carryingout fusion processing to obtain four paths of 2048-point FFT results; and 2, transposing the four paths of 2048-point FFT results, constructing a 2048-row and 4-column data matrix, simultaneously carrying out transverse FFT conversion and matrix conversion on each row, and outputting a complete frequency spectrum sequence. The problem of high-speed multichannel parallel data FFT conversion is solved. A two-dimensional FFT algorithm is divided into two steps; in the first step of transverse FFT transformation, 4N-point FFT transformation is achieved through N-point FFT transformation, and thenumber of rows of the matrix is reduced to one fourth of the number of rows in the prior art; and in the second step of longitudinal FFT algorithm, the utilization efficiency of hardware resources isimproved.

Description

technical field [0001] This application relates to the technical field of solar radio spectrum analysis, in particular to a solar radio spectrum analysis method and system based on a multi-channel FFT algorithm. Background technique [0002] The statements in this section merely mention the background art related to this application, and do not necessarily constitute the prior art. [0003] At present, there are many researches on high-speed multi-channel parallel FFT algorithm, but each method is only suitable for the case with a small number of channels. Multi-channel parallel FFT algorithm and two-dimensional FFT algorithm are suitable for parallel FFT transformation of multi-channel data. When implemented in FPGA, the processing delay is low and the algorithm complexity is low. However, when there are too many channels (>8 channels), this The two algorithms occupy too much hardware resources. [0004] Based on the parity-separated FFT transformation algorithm, N-poi...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06F17/14
CPCG06F17/14G06F2218/02Y02A90/10
Inventor 严发宝张磊张园园尚自乾张卫丹于永林常树旺武昭苏艳蕊路光王冰陈耀
Owner SHANDONG UNIV
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