Ground noise fitting and eliminating method for satellite spectrum situation generation

A spectrum and situational technology, applied in the field of cognitive radio satellite communication, can solve the problems of improving the perception of spectrum signal parameters, large fluctuations in the noise floor, etc., and achieve the effect of improving accuracy

Active Publication Date: 2021-08-13
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

But at present, signal interference is manifested as a regular noise floor in the spectrum resource monitoring system, and the noise floor in the spectrum of the satellite to be detected often fluctuates greatly, which increases the difficulty of sensing spectrum signal parameters

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  • Ground noise fitting and eliminating method for satellite spectrum situation generation
  • Ground noise fitting and eliminating method for satellite spectrum situation generation
  • Ground noise fitting and eliminating method for satellite spectrum situation generation

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Embodiment Construction

[0054] The embodiments of the present invention will be disclosed below, and in order to clearly illustrate, many practices will be described in the following description. However, it should be understood that these practices are not applied to limit the invention. That is, in some embodiments of the invention, these practices are unnecessary.

[0055] Further detailed description of the technical solutions of the present invention will be described below with reference to the drawings:

[0056] The present invention is a bottom noise fitting and elimination method for satellite spectrum production, including the fitting of the bottom noise data, the bottom noise cancellation, and three parts: the specific steps are as follows:

[0057] Step 1, the bottom noise data fit: Contains the original spectral signal separation noise and the two modules of the bottom noise in the bottom noise, respectively, each of the spectrum data and the threshold, set the power value in the spectrum si...

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Abstract

The invention discloses a ground noise fitting and eliminating method for satellite spectrum situation generation. The method comprises three parts of ground noise data fitting, ground noise elimination and situation prediction, the ground noise data fitting is to sort spectrum data to set a signal threshold, the spectrum data higher than the threshold are considered as signals, the spectrum data lower than the threshold are considered as ground noise, and the spectrum data lower than the threshold are considered as ground noise, therefore, ground noise data are separated, and polynomial fitting is performed on the separated ground noise; the ground noise elimination is realized by subtracting the ground noise data obtained according to a fitting function from original signal data; the situation prediction is to predict the spectrum occupancy state of the online spectrum data according to a model trained by the offline spectrum data. According to the method, the adaptive capacity of the satellite spectrum to noise ground fluctuation can be improved, so that the accuracy of spectrum situation prediction is improved.

Description

Technical field [0001] The present invention relates to the field of cognitive radio satellite communications, and is specifically a bottom noise fitting and elimination method for satellite spectrum production. Background technique [0002] With the rapid development and popularity of wireless smart devices, spectrum resources are particularly precious in wireless communication, while due to spectral allocation strategies, a large part of the spectrum is not effectively utilized for a period of time, and is in an idle state. The scarcity and low utilization of the spectrum promotes the relevant research, and the cognitive radio technology is considered to be one of the effective methods of improving the spectral utilization. With the spectrum perception technology, cognitive users can use the authorized spectrum resources or not In the case of interfering authorized users, share the same spectrum resources. [0003] At present, the interference detection and suppression of vario...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/373H04B17/382H04B17/391
CPCH04B17/373H04B17/382H04B17/3913
Inventor 丁晓进吕秋霖张更新
Owner NANJING UNIV OF POSTS & TELECOMM
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