二次雷达波束控制系统设计

Design of beam steering system for secondary surveillance radar

传统的二次雷达通常采用机械扫描的工作方式。基于无源相控阵天线体制的二次雷达作为一种新体制的雷达,是为了适应重点空域警戒功能而发展起来的。波束控制系统是该二次雷达的重要组成部分,其基本功能包括:相位控制、同步控制、数据传输以及信号自检。二次雷达波束控制系统采用了基于嵌入式计算机和网络的集中式波控方案设计。在波控处理流程中,作者采取了软件和硬件的双重同步手段。在波控数据的布相方法上,采用二级缓存同步布相的方法。在实践过程中证明,基于嵌入式计算机和网络的二次雷达波束控制系统具有工作方式灵活多样、波束调度方便、可靠性高等优点。

Mechanical scanning mode is often used in traditional secondary surveillance radar. As a new kind of radar concept, passive phased array based secondary surveillance radar is developed to suit the function of vital airspace surveillance. The basic function of the beam steering system, which is an important component of secondary surveillance radar, includes phase steering, synchronous processing, data transmission and signal self-checking. In this paper, the centralized design scheme based on embedded computer and network for beam steering system of secondary surveillance radar is adopted. Dual synchronous process method of software and hardware is employed in the flow of beam steering. The secondary cache is adopted for synchronous beam distribution. Proved in the course of practice, embedded computer and network-based secondary radar beam steering system features a flexible way of working, beam scheduling convenience, and higher reliability.