Research On Spatial Power Combination Technology Of Distributed Array Based On Time Reversal

Considering the requirement of the concept of "precise electronic warfare" and the difficulty of precise phase control of high-frequency electromagnetic waves by traditional phase control methods,this paper considers the application of time inversion in spatial power synthesis of distributed arrays to achieve coherent signal synthesis in the target area,so as to achieve the purpose of precise interference of electronic equipment in the area.This technology is helpful to overcome the inherent electromagnetic interference problem of the traditional "extensive" interference mode,and to improve the battlefield viability of our electronic equipment.The major contributions of this paper is given as follows:1.This paper summarizes the research status of distributed array,time inversion and space power synthesis at home and abroad,discusses the composition of space power synthesis system based on time inversion,and deduces the space-time synchronous focusing characteristics of time inversion electromagnetic wave from the theoretical point of view.2.A mathematical model for near-field power synthesis of distributed fixed array based on time inversion is established.The simulation experiments of power synthesis under noise-free conditions are carried out and the error factors affecting the synthesis effect are quantitatively analyzed.The effect of signal synthesis in noisy environment is analyzed theoretically.3.The feasibility of applying time inversion technology to spatial power synthesis of distributed motion array is analyzed.A mathematical model of far-field power synthesis of distributed motion array is established.The simulation experiment of power synthesis is carried out and the error factors affecting the synthesis effect are quantitatively analyzed.4.Based on the GUI function of MATLAB,a distributed array space power synthesis simulation software based on time inversion is designed.5.A mathematical model of power resource optimization for distributed array coherent signal synthesis is established.Sequential quadratic programming(SQP)and genetic algorithm(GA)are used to solve the problem,and the optimal power allocation scheme is obtained to improve the effect of signal synthesis.