Ground noise fitting and eliminating method for satellite spectrum situation generation

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...

AI Technical Summary

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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