Title:
METHOD FOR MEASURING VALID NOISE VALUE OF PERIODIC SIGNAL AND SIGNAL-TO-NOISE RATIO OF SINUSOIDAL SIGNAL
Document Type and Number:
WIPO Patent Application WO/2023/216516
Kind Code:
A1
Abstract:
The present application relates to a method for measuring a valid noise value of a periodic signal and a signal-to-noise ratio of a sinusoidal signal. The technical points of the method comprise: respectively executing signal noise measurement on a target periodic digital signal and a target periodic analog signal; by means of a specific design method, obtaining a series of zero-crossing points of electrical signals, and performing analog-to-digital conversion once at a relative time determined by means of the series of zero-crossing points; and further calculating the noise of the periodic signals by means of a series of analog-to-digital conversion results. The method further comprises: respectively executing signal-to-noise ratio measurement on a target sinusoidal digital signal and a target sinusoidal analog signal; by means of a specific design method, obtaining a series of zero-crossing points of electrical signals; and according to each zero-crossing point, calculating the frequency or period of the electric signal; and then performing calculation to obtain a signal-to-noise ratio of a sinusoidal signal. The entire design method is suitable for measuring the noise of a periodic signal, a system performs detection conveniently, and hardware overheads are small. Moreover, the anti-interference capability of the system is relatively high; and the implementation is simple and rational, and data is accurate and reliable.
Inventors:
DAI ERHAN (CN)
WENG ZHI (CN)
SU LINFEI (CN)
WENG ZHI (CN)
SU LINFEI (CN)
Application Number:
PCT/CN2022/127328
Publication Date:
November 16, 2023
Filing Date:
October 25, 2022
Export Citation:
Assignee:
UNIV NANJING POSTS & TELECOMMUNICATIONS (CN)
International Classes:
H04B17/20; G01R23/02
Foreign References:
| CN115102641A | 2022-09-23 | |||
| CN114966198A | 2022-08-30 | |||
| CN104808055A | 2015-07-29 | |||
| CN104330623A | 2015-02-04 | |||
| JP2016075555A | 2016-05-12 |
Attorney, Agent or Firm:
NANJING JINGWEI PATENT & TRADEMARK AGENCY CO., LTD (CN)
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