基于射频采样的宽带DAR实时处理系统  

A Real-time Processing System of Wideband DAR Based on RF Sampled

作　　者：杨剑[1,2] 鲍庆龙[2] 张月[2] 陈曾平[2] 

机构地区：[1]第二炮兵工程学院,西安710025 [2]国防科技大学ATR实验室,长沙410073

出　　处：《现代雷达》2010年第11期42-46,共5页Modern Radar

基　　金：国防科技重点实验室基金项目资助课题;教育部新世纪优秀人才支持计划资助课题(NCET-06-0921)

摘　　要：针对某数字阵列雷达具有射频采样和包含宽带信号的特点,分析了宽带数字波束形成实现方法,设计了宽带信号的实时处理平台,并对平台进行了功能验证。处理平台采用CPC I总线结构,所设计的FPGA阵列处理板实时完成宽带信号的数字波束形成,DSP阵列信号处理板进行高分辨特征提取和成像,采用多通道光纤传输实现板间数据的高速实时交互。该信号处理平台具有可扩展、可重构的特点,可实现用户在同一硬件平台上通过开发不同的应用软件来适应不同功能的需求。Aiming at the characteristics that one digital array radar（DAR） is sampled in radio frequency（RF） and contains wideband signal,the realizing method of wideband digital beamforming（DBF） is analyzed in this paper.Then the real-time processing platform of wideband signal which adopts CPCI bus structure is designed and tested.In above design,the DBF of wideband signal is realized with FPGA array processing board,the high resolution feature-extraction and imaging are implemented with DSP array processing board.The high speed data transmission between boards is realized through multiple channel optical fiber.This processing platform owns the characteristics of expansibility and reconstructable.Different application software can be developed to meet the requirement of different function on this hardware platform by users.

关 键 词：数字阵列雷达 宽带 通道均衡 数字波束形成 数字信号处理器 

分 类 号：TN957.51[电子电信—信号与信息处理]