中频脉冲压缩信号数字化直接产生技术研究  

ON DIRECT DIGITAL GENERATION OF IF PULSE COMPRESSION SIGNALS

作　　者：姒强[1] 向敬成[1] 

机构地区：[1]电子科技大学电子工程学院,成都610054

出　　处：《电子与信息学报》2002年第1期19-24,共6页Journal of Electronics & Information Technology

摘　　要：该文提出了一种脉冲压缩中频信号数字化产生方法及硬件实现方案,对其中的一些关键问题做出了定量分析;在此基础上完成了一套波形产生器,可产生6种中频15MHz、带宽1MHz、时宽等于或小于300μs的线性调频、非线性调频信号。测试表明其谐波与杂散均优于-68dB,完全达到工程应用要求。In this paper, a method of direct digital generation of intermediate frequency(IF) pulse coinpression signals is proposed, and the hardware architecture is also presented. Some key issues are analyzed quantitatively. Based on these, a generation system is implemented, which is applicable to generate six kinds of LFM, NLFM waveforms. The designed IF reaches 15MHz aud baudwidth reaches IMHz with timewidth equal to or less.than 300μs. The ineasuring resiilts of SFDR. and noise are all below -68dB, which show that the perforniances of the system can nieet the needs of practical engineering application.

关 键 词：直接数字产生 中频脉冲压缩 线性调频 非线性调频 信号处理 

分 类 号：TN911.72[电子电信—通信与信息系统]