A device and a method for backtracking a terahertz communication beam based on double conjugate mixing

Abstract

The invention relates to a terahertz communication beam backtracking device and method based on double conjugate mixing, For intersatellite links, because of the high relative motion of satellites, constrained by space-time conditions, so that the inter-satellite link has a short communication time, the transmission data volume is big. The terahertz wave of the invention can transmit a large amount of information in a short time because of the high transmission rate, and the alignment process does not require the physical alignment of mechanical conditions, and the transmission beam can be induced to transmit backward only by the incidence of the pilot wave, thus realizing the real-time alignment of the communication process and ensuring the sustainability of the communication. The invention can make the indirect connection of the terahertz communication node relatively easy, and the system does not need to adopt the terahertz frequency band rotary joint or the fast numerical controlphase shifter and the like to obtain the difficult component, and the problem of the terahertz beam tracking difficulty can be solved.

Description

technical field [0001] The present invention relates to a communication method and device, in particular to a double-conjugate mixing-based terahertz communication beam backtracking device and method, and belongs to the technical field of data communication. Background technique [0002] In the inter-satellite link, due to the high-speed relative movement of the satellite, the inter-satellite link has the characteristics of short communication time and large amount of transmitted data. Terahertz waves are very suitable for inter-satellite communication due to their high transmission rate and the ability to transmit a large amount of information in a short period of time. [0003] At present, due to the lack of terahertz power devices, high-gain antennas or antenna arrays are usually used to compensate for the lack of terahertz transmission and reception power, which will make the terahertz beam very narrow, so the alignment of the receiving and transmitting antennas has beco...

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is: aiming at the shortcomings of the existing terahertz communication tracking and alignment technology, a terahertz communication beam backtracking device and method based on double conjugate mixing is proposed, which effectively overcomes the existing terahertz communication system. It is difficult to align and cannot track the target constantly

It solves the tedious and long-period problem that the terahertz tracking and alignment process requires human participation and interaction, and solves the problem that traditional tracking requires mechanical servo cooperation, which makes the beam scanning speed and accuracy contradictory

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