Frequency domain-based frequency spectrum data cleaning method in civil aviation very high frequency communication

Abstract

The invention discloses a frequency domain-based frequency spectrum data cleaning method in civil aviation very high frequency communication, and relates to the field of civil aviation radio signal processing, and the method comprises the steps: S1, carrying out the smooth processing of an original frequency spectrum signal, and obtaining a first frequency spectrum signal; s2, roughly judging whether noisy signals of all frequency points exist or not; s3, counting the maximum value position of each frequency point in the first frequency spectrum data in a frequency domain; s4, screening the spectrum data of the corresponding frequency points; s5, slicing and recombining all frequency point data and forming tensors; after data cleaning is carried out on the frequency spectrum data, frequency spectrum prediction data with higher quality can be obtained, so that the quality of a frequency spectrum data sample for subsequently training an intelligent frequency spectrum prediction neural network model is ensured, and the prediction capability of the intelligent frequency spectrum prediction neural network in a complex electromagnetic environment is improved; finally, the purpose of improving the accuracy and reliability of intelligent spectrum occupancy prediction is achieved, and important technical support is provided for improving the very high frequency voice communication frequency utilization rate of an airport terminal area and guaranteeing the aviation operation safety of the airport terminal area.

Description

technical field [0001] The invention relates to the field of civil aviation radio signal processing, in particular to a method for cleaning frequency spectrum data in civil aviation VHF communication based on the frequency domain. Background technique [0002] In recent years, due to the continuous development of the information society, it has brought about a high reliance on communication resources. Wireless communication is a convenient means of communication widely used. For the field of civil aviation, its radio communication is in the field of civil aviation communication It has an extremely important position. In order to ensure the safe frequency environment of radio communication in the civil aviation field, the International Civil Aviation Organization (ICAO) has specially allocated the corresponding civil aviation VHF communication frequency band for aviation radio communication, that is, the frequency range is 118MHz~136.975MHz , the channel bandwidth is 25KHz. ...

AI Technical Summary

Problems solved by technology

From the current research status of data cleaning, it is found that the data cleaning of most current literatures is aimed at specific data objects. Due to the different data objects processed, the solutions and technical ideas of data cleaning are not applicable to each other.

Therefore, there is still no standardized processing method for spectrum data cleaning technology for civil aviation radio voice communication services

Images