Frequency spectrum determination method, system and equipment based on Goertzel algorithm, and storage medium

A method for determining the frequency spectrum, applied in the field of signal processing, can solve problems such as low signal processing efficiency, and achieve the effect of improving signal processing efficiency, improving accuracy, and avoiding cumulative amplification

Active Publication Date: 2021-08-17
WUHAN JUXIN MICROELECTRONICS CO LTD
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Problems solved by technology

[0006] In order to solve the technical problem of relatively low signal processing efficiency, embodiments of the p...

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  • Frequency spectrum determination method, system and equipment based on Goertzel algorithm, and storage medium
  • Frequency spectrum determination method, system and equipment based on Goertzel algorithm, and storage medium
  • Frequency spectrum determination method, system and equipment based on Goertzel algorithm, and storage medium

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Embodiment Construction

[0048] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0049] figure 1 A flow chart of a spectrum determination method based on the Getzel algorithm provided by an embodiment of the present invention, such as figure 1 As shown, the method includes:

[0050] S1, traversing the sampled signal group.

[0051] As far as conventional DFT is concerned, if DFT is performed on a discrete signal x(n) with a...

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Abstract

The embodiment of the invention discloses a frequency spectrum determination method, system and equipment based on a Goertzel algorithm, and a storage medium. According to the embodiment of the invention, the method comprises the steps: traversing a sampling signal group; based on the preset iteration process coefficient after zero setting processing, performing Goertzel iteration on the traversed sampling signal group to obtain a to-be-selected iteration process coefficient corresponding to the traversed sampling signal group; determining the iteration output quantity of the Goertzel iteration according to the iteration process coefficient to be selected; and determining a signal complex frequency spectrum value according to the iteration output quantity. Therefore, according to the embodiment of the invention, the signal processing efficiency is greatly improved due to the fact that the Goertzel iteration algorithm is used for determining the complex frequency spectrum value; and meanwhile, the energy relation among a plurality of sampling signal groups is disconnected, so that accumulative amplification of errors is avoided, and the accuracy is improved. Therefore, the method is particularly suitable for a single-precision floating-point type application scene, it is considers that iteration errors accumulated in the single-precision application scene seriously influence the accuracy of the Goertzel algorithm.

Description

technical field [0001] The present invention relates to the technical field of signal processing, in particular to a spectrum determination method, system, device and storage medium based on the Getzel algorithm. Background technique [0002] In terms of signal processing, the discrete Fourier transform (DFT, Discrete Fourier Transform) is a conventional signal harmonic extraction method, which can detect specific frequency components in real time. [0003] DFT and its fast algorithm, that is, Fast Fourier Transform (FFT, Fast Fourier Transform), have been obtained in the measurement and analysis of various power signals, such as harmonic analysis, power calculation, various protection and fault analysis and judgment. Wide range of applications. [0004] However, DFT and FFT not only have low speed but also high computational complexity in the process of signal spectrum processing, which belongs to a processing method with relatively low signal processing efficiency. [00...

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Application Information

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IPC IPC(8): G01R23/16
CPCG01R23/16
Inventor 陈志鹏施韵彭聪聪
Owner WUHAN JUXIN MICROELECTRONICS CO LTD
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