Reverse wave beam control method for retrodirective discrete array

Abstract

Provided is a reverse wave beam control method applied to a retrodirective discrete array. The method comprises the following steps: modulating guide information determined by a system to carrier frequency capable of real-time frequency adjusting to generate a reverse guide signal; sending the signal to the retrodirective array; carrying out demodulation on the received signal by the retrodirective array to obtain the guide information and calculating conjugate phase of the guide information; synthesizing a conjugate phase signal according to the conjugate phase obtained from calculation; and carrying out power amplification on the conjugate phase signal and emitting the signal through the retrodirective array. The method enables incoherent local oscillators which are independent mutually and are in a discrete state to generate the microwave signal which is coherent in phase and of which the phase is conjugate with that of the guide information, and realizes reverse wave beam control of the microwave beam backtracking along the incidence direction of the guide signal, thereby protecting system core frequency secret safety, avoiding malicious interference through frequency hopping and improving anti-interference capability of the system.

Description

technical field [0001] The invention belongs to the field of energy wireless transmission, and in particular relates to a reverse beam control method of a direction-retrospective discrete array used in microwave wireless energy transmission and automatic tracking communication systems. Background technique [0002] At present, the main ways to realize wireless energy transmission are: laser, ultrasonic, electromagnetic coupling and microwave. They have their own scope of application. In the case of short distance, you can choose ultrasonic and electromagnetic coupling; in the case of long distance, you can choose laser or microwave. Laser technology realizes medium and long-distance energy transmission. Its advantage is narrow beam, and its disadvantages are low conversion efficiency and limited power capacity. One goal of laser wireless energy transmission is to improve the conversion efficiency, reaching or approaching the conversion efficiency of microwave wireless ener...

AI Technical Summary

Problems solved by technology

[0015] The technical problem to be solved by the present invention is to provide a reverse beam control method for direction traceback discrete arrays in view of the deficiencies in the prior art, so as to solve the "conjugate phase mixing" system commonly used by direction traceback arrays and reverse antennas. The unified reference phase generated by the local oscillator is distributed to each array element one by one through a complex distribution network, and the frequency information of the pilot signal is in a public state, which is easy to be interfered by malicious

However, the existing "conjugate phase mixing" system cannot support discrete arrays

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