基于时间反转的共形天线阵波束赋形方法

Beamforming of Conformal Antenna Array Based on Time Reversal Method

基于时间反转理论实现远场目标聚焦技术日趋成熟,但在天线阵领域,利用时间反转方法对共形天线阵进行波束赋形的情况目前来说并不常见,对于共形天线阵,因其结构不同于普通的线阵或者面阵,故传统的波束赋形方法对其来说并不适用,本文将利用时间反转方法,在共形天线阵所期望的波束主瓣指向方向上,放置发射天线对天线阵发射电磁波,将天线阵的接收信号通过时间反转方法反演成激励信号,对天线阵进行激励,即可得到所期望的方向图,仿真结果表明,该方法可以准确有效的实现对共形天线阵的波束赋形。

Based on the theory of time reversal for the far field target focusing technology becoming mature,but in the field of antenna array,using the method of time reversal of the beam informs the conformal array is currently not very common,for conformal antenna array,because its structure is different from the ordinary linear array or array,so the traditional method of beam with vehicle do not apply for it,this article will use the time reversal method,the conformal antenna array expected main lobe pointing in the direction of the beam,the transmitting antenna is placed to emission of electromagnetic wave antenna array,the array receiving signals by time reversal method inversion into incentives,incentives to antenna array,The desired orientation diagram can be obtained.The simulation results show that this method can accurately and effectively shape the beam of the conformal antenna array.