相控阵雷达导引头捷联解耦数字平台设计  

Design of a Digital Platform for Strapdown Decoupling of Phased Array Radar Seekers

作　　者：杨开 阮聪 赵丹 李耀军[1] YANG Kai;RUAN Cong;ZHAO Dan;LI Yaojun(Xi'an Electronic Engineering Research Institute,Xi'an 710100)

机构地区：[1]西安电子工程研究所,西安710100

出　　处：《火控雷达技术》2024年第4期37-41,共5页Fire Control Radar Technology

摘　　要：相控阵雷达导引头以其在探测、抗干扰等方面的优势,成为导引头发展的重要方向。为了隔离平台扰动对波束指向的影响,实现导引头的高精度测量和跟踪,本文设计了一种捷联解耦数字平台,将导弹姿态信息前馈至导引头的角跟踪系统,使导引头通过移相器控制波束指向反方向旋转到导弹旋转前的方向,以此达到波束指向在惯性空间的稳定,实现弹体姿态去耦的目的。并在Matlab中进行了置位回路和跟踪回路的建模仿真,验证了该数字平台的正确性及有效性,并且在典型扰动频率的隔离度指标能够满足工程要求。Phased array radar seekers have become an important direction for the development of seekers due to their advantages in detection and anti-jamming capabilities.To isolate the effects of platform disturbances on the beam pointing of the onboard seekers and achieve high-precision measurement and tracking of the seekers,this paper proposes a digital platform for strapdown decoupling.The missile attitude information is fed forward to the seeker's angular tracking system,allowing the seeker to control its beam to rotate in the direction opposite the missile rotation using the phase shifter to its pointing before the missile rotation,thereby stabilizing the beam pointing in inertial space and achieving the purpose of decoupling the missile attitude and seeker beam pointing.The positioning loop and tracking loop of the proposed digital platform are modeled and simulated in MATLAB,verifying the effectiveness of the digital platform.The isolation performance of the proposed digital platform at typical disturbance frequencies meets matching engineering requirements.

关 键 词：相控阵 导引头 捷联解耦 

分 类 号：TN95[电子电信—信号与信息处理]