Vacuum pipe flying train communication system

Abstract

The invention provides a vacuum pipe flying train communication system. The vacuum pipe flying train communication system is used for solving the problem of vacuum pipe flying train communication. Thevacuum pipe flying train communication system comprises a vehicle-mounted antenna subsystem and a ground leaky waveguide subsystem, which achieve wireless communication through leaky waveguide distributed in a spiral shape. According to the vacuum pipe flying train communication system, the leaky waveguide is distributed in the spiral shape on the inner wall of a vacuum pipe, a train antenna performs uniform circular motion on the cross section of the vacuum pipe and around the axial center of the vacuum pipe, and by means of the feature that the spirally distributed leaky waveguide can produce isophase waves inside the vacuum pipe and by controlling the movement manner of the train antenna, Doppler effects can be reduce to the maximum degree; a user inside a train can achieve interactiveinformation transmission with the ground leaky waveguide subsystem via in-train antenna-relay processing center-train antenna to avoid high signal attenuation during direct communication with the leaky waveguide and improve the transmission quality of wireless signals.

Description

technical field [0001] The invention belongs to the field of microwave communication, and in particular relates to a communication system for a vacuum tube flight train. Background technique [0002] The vacuum tube high-speed flying train runs at high speed in the high-speed train flying tube. The high-speed train flight pipe is a closed metal pipe built on the ground or underground. The atmospheric pressure inside the pipe is very low. When the high-speed train runs in the vacuum pipe, it has the characteristics of low mechanical friction, low aerodynamic resistance, and low noise. Drive at super high speed (more than 1000km / h). [0003] In order to ensure the safe operation of high-speed flying trains and the needs of vehicle-ground communication, there must be a corresponding communication system to ensure its communication needs. Due to the particularity of high-speed flying trains, the communication method between the train and the ground cannot be wired communicatio...

AI Technical Summary

Problems solved by technology

However, in the vacuum pipe of the flying train, the wall of the vacuum pipe is a metal conductor, and the leakage electromagnetic wave is affected by the metal wall, and exists in the form of total reflection in the vacuum pipe, which is different from the electromagnetic environment of the leaky wave cable in the traditional closed environment. Realize wireless communication between vehicle and ground

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