频控阵雷达多路相参信号源的设计与实现  

Design of multi-channel and phase-coherence signal generator for frequency diverse array

作　　者：王子樵 徐湛[1,2] 陈晋辉 职如昕 Wang Ziqiao;Xu Zhan;Chen Jinhui;Zhi Ruxin(School of Information and Communication Engineering,Beijing Information Science&Technology University,Beijing 100192,China;Key Lab of Modern Means&Ctr Tech,M.of EDU,Beijing Information Science&Technology University,Beijing 100192,China)

机构地区：[1]北京信息科技大学信息与通信工程学院,北京100192 [2]北京信息科技大学现代测控技术教育部重点实验室,北京100192

出　　处：《电子测量技术》2020年第3期11-16,共6页Electronic Measurement Technology

基　　金：国家自然科学基金资助项目(61620106001);北京市优秀人才资助计划青年拔尖项目(2016000026833ZK08);北京市属高校高水平教师队伍建设支持计划“青年拔尖人才培养计划”(CIT&TCD201704065);北京信息科技大学学科建设类项目(5121911006)资助。

摘　　要：针对频控阵雷达高相参精度、低复杂度、小型化的设计需求,提出了一种基于FPGA和射频捷变收发器的多路相参信号源设计方案。利用多片射频捷变收发器产生8路基带同步信号,采用将一路发射信号回接到各接收通路的一发多收自校准方式,并运用基于1 bit量化检测校正相位模糊的方法,对多路信号的相位进行检测和调整,实现多路射频信号的无相位模糊相参发射。该信号源设计方案实现复杂度低,占用资源少,可输出多路500 MHz^6 GHz相参的LFM射频信号。Based on the requirements of frequency-controlled array radar for high-precision phase-coherent,lower complexity and miniaturization,a multi-channel coherent signal source design scheme based on FPGA is proposed.RF agile transceiver chips generate eight synchronized baseband signals.Returning one transmit signal to each rest of receiving path,the method of 1 bit quantization detection and correction of phase ambiguity is proposed and using to detect and adjust phase of multi-path signals coherence,and then synchronize RF signals,to realize transmit multi-channel signal without phase ambiguity.The design realizes that the multi-path signal has low correlation and low resource consumption,and the constructed signal source can realize the output of multi-channel 500 MHz^6 GHz coherent LFM radio frequency signals.

关 键 词：频控阵雷达 相参信号 FPGA 信号源 1 bit量化 

分 类 号：TN409[电子电信—微电子学与固体电子学]