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A Broadband Spectrum Signal-to-Noise Separation Method Based on Window Partition

A broadband spectrum and signal-to-noise separation technology, which is applied in the field of broadband spectrum signal-to-noise separation, can solve the problem of unstable signal-to-noise separation accuracy of broadband spectrum, and achieve the effect of improving the signal-to-noise separation accuracy

Active Publication Date: 2021-08-27
XINJIANG ASTRONOMICAL OBSERVATORY CHINESE ACADEMY OF SCI
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Problems solved by technology

[0014] In order to solve the problem of unstable separation accuracy of broadband spectrum signal-to-noise in the prior art, the present invention proposes a wide-band spectrum signal-to-noise separation method based on window division

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  • A Broadband Spectrum Signal-to-Noise Separation Method Based on Window Partition
  • A Broadband Spectrum Signal-to-Noise Separation Method Based on Window Partition
  • A Broadband Spectrum Signal-to-Noise Separation Method Based on Window Partition

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Embodiment Construction

[0062] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following embodiments are only used to illustrate rather than limit the present invention.

[0063] A kind of broadband spectrum signal-to-noise separation method based on window division of the present invention, such as figure 2 shown, including the following steps:

[0064] Step S1, provide a plurality of given radio wave environment broadband spectrum P(F[n], V[n]) through the radio wave environment test system of the radio astronomy station, where P is a two-dimensional array, F is a frequency, and V is a frequency point The corresponding power value, n is the number of frequency points.

[0065] Step S2, judging whether the test parameters have changed. If the test parameters are changed, the characteristics of the obtained frequency spectrum sequence will be changed, then go to step S3; if the test parameters are...

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Abstract

The present invention relates to a broadband spectrum signal-to-noise separation method based on window division, comprising step S1, given broadband spectrum; step S2, judging whether test parameters have changed; step S3, selecting spectrum samples; step S4, calculating the standard deviation of spectrum noise ; Step S5, make the adjacent value comparison discriminant value deta; Step S6, calculate the adjacent value comparison initial noise signal; Step S7, noise extraction; Step S8, divide the noise window; Step S9, calculate the median and standard deviation of the single window noise ; Step S10, calculate the signal-to-noise separation threshold for each window; Step S11, signal-to-noise separation; Step S12, optimize the adjacent value comparison discriminant value and window division width. The invention can improve the separation precision of signal and noise, better identify the characteristics of weak interference signals in complex radio wave environment, and provide important basis for station interference source search, radio management and interference elimination strategy.

Description

technical field [0001] The invention relates to the technical field of radio astronomy, in particular to a signal-to-noise separation method based on window-divided broadband spectrum. Background technique [0002] Large-aperture radio telescopes have extremely high system sensitivity, and there are many electronic devices in the system, between systems and on site. With the development and application of high-frequency electronic technology and high-speed digital processing technology, the construction of digital receivers, digital terminals, commercial equipment, electrical equipment and optical observation equipment on the site makes the electromagnetic environment of the site extremely complex. [0003] The strength and spectral density of radio frequency interference (RFI) will make the observation results deeply affected by the radio frequency interference and lose the use value. Observations made with single-antenna radio telescopes (continuum or spectrum) in particu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B17/336H04B17/345G01R23/16
CPCG01R23/16H04B17/336H04B17/345
Inventor 刘奇冯冬冬王玥刘晔
Owner XINJIANG ASTRONOMICAL OBSERVATORY CHINESE ACADEMY OF SCI
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