基于波束捷变的多波束设备抗电磁干扰方法研究

Study on Method of Anti-electromagnetic Interference of Multi-beam Equipment Based on Beam Agility

针对测控设备在面临的电磁干扰问题,基于多波束测控系统具备的波束捷变优势,提出了一种空域滤波的抗电磁干扰方法。基本思想是一个或多个检测波束对指定空域快速扫描覆盖、动态检测干扰源特征,波束控制系统基于干扰特征对跟踪波束进行实时赋形,使跟踪波束方向图在干扰方向上形成具有一定深度的零陷,从而降低进入设备信道的干扰信号强度,实现对测控目标的稳定连续跟踪。此外,从工程应用角度以平面阵列天线为例,对波束快速扫描方式、干扰信号检测方法和多约束条件下的波束实时赋形等关键技术进行了探讨,最后通过仿真验证了方法有效性。

This paper proposes a method of anti-electromagnetic interference for solving the electromagnetic interference problems caused by measurement and control equipment,based on the beam agility of multi-beam TT&C systems.The basic idea is to quickly scan and cover a specified airspace with one or more detection beams dynamically detecting characteristics of interference source.The beam control system performs real-time shaping of the tracking beam based on interference characteristics,forming a certain depth of nulls in interference direction to reduce the intensity of interference signals entering the equipment channel,achieving stable and continuous tracking of measurement and control targets.In addition,this paper studies key technologies such as fast beam scanning,interference signal detection,and real-time beam shaping under multiple constraints from the perspective of engineering applications,with planar array antenna as an example,Finally,simulation result verifies the effectiveness of the method.