An energy-loaded signal-based x-ray source for space x-ray communications

Abstract

The invention relates to an X-ray source for spatial X-ray communication based on energy load signals; a cathode assembly of the X-ray source comprises an electron emission source, a power supply rod,power supply rod insulation ceramic, a cathode cover and a cathode barrel; a focusing electrode assembly comprises a focusing electrode diaphragm and a focusing electrode barrel; an anode assembly comprises an anode diaphragm and an anode barrel and is connected with a multi-target transmission window assembly through the anode barrel; an electric field modulation assembly comprises a multi-section electrode and an electrode bracket; and the multi-target transmission window assembly comprises metal target materials, a transmission window and a target welding ring. According to the X-ray source for spatial X-ray communication based on energy load signals in the invention, a fast-response high-frequency pulse modulation electric field modulation assembly is utilized to generate a modulationelectric field, the electronic motion track is changed, the different metal target materials on the multi-target transmission window assembly are bombarded, and characteristic X-rays with different energy are generated. The characteristic X-rays with various kinds of energy are used as code elements, so that rapid X-ray spatial communication based on energy load signals is achieved. The X-ray source in the invention is high in modulation speed, large in number of the loadable code elements, high in signal-to-noise ratio, low in error rate and high in communication speed.

Description

technical field [0001] The invention belongs to the technical field of space communication, and in particular relates to an X-ray source for space X-ray communication based on an energy load signal. Background technique [0002] X-ray space communication is a communication method that uses X-ray photons as carrier signals to realize information transmission. At atmospheric pressure less than 10 -4 Under the vacuum environment of Pa, the X-ray transmittance is almost 100%. And X-rays have the characteristics of high frequency, high energy and short wavelength. Utilizing these properties of X-rays and applying them to space communication can provide abundant channel resources for future space communication systems, enable communication in complex environments such as strong electromagnetic shielding environments, and effectively reduce the size of communication equipment and reduce aircraft loads . In the X-ray communication scheme currently proposed, Dr. Keith Gendreau, a...

AI Technical Summary

Problems solved by technology

[0003] In the above schemes, the transmission of digital signals "0" and "1" is realized through the presence / absence of X-ray signals. At the signal receiving end, all X-rays within the energy response range of the detector will be considered as valid signals. This is easily affected by cosmic rays and background X-rays in the real space environment, resulting in reduced signal-to-noise ratio and poor communication performance.

Moreover, more electrons will hit the grid during work, which will cause heat to be generated on the grid and increase the difficulty of designing heat dissipation

The patent (application number 201810193985.2) proposes a magnetic field modulation X-ray source for space X-ray communication, which uses a magnetic field to control the X-ray source to produce different characteristic X-ray emissions. In this scheme, the electron beam must be deflected greatly , a large magnetic field and a large current are required to generate a magnetic field. The ferrite core is used in the scheme. The increase of inductive reactance at high frequencies will affect the deflection performance, and fast modulation cannot be achieved.

Images