| 应用于数字阵列的多通道波形产生系统设计 |
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| 引用本文： | 陈菡,谭剑美,吴兵. 应用于数字阵列的多通道波形产生系统设计[J]. 现代电子技术, 2012, 35(9): 19-21,24 |
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| 作者姓名： | 陈菡 谭剑美 吴兵 |
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| 作者单位： | 中国电子科技集团公司第38研究所,安徽合肥,230031 |
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| 摘 要： | 直接数字频率合成（DDS）是数字阵列雷达（DAR）实现收发数字波束形成的关键技术之一。给出了一种基于DDS技术的多通道波形产生系统的设计方案,该方案在25cm×12cm的PCB板上实现了波形产生、波形捷变与幅相控制的系统集成设计。该系统能同时产生16路频率、幅度和相位独立控制的中频雷达信号,满足数字阵列雷达对收发阵列单元的高集成度、小型化、低成本和多功能的要求;系统实现的主要技术指标为：信号带宽1～120MHz可变,通道隔离度大于60dBc,窄带脉内信噪比大于65dBc,满足数字阵列雷达技术指标的要求。
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| 关 键 词： | 数字阵列雷达 波形产生 直接数字频率合成 小型化 |
Design of multi-channel waveform generation system applied in DAR |
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| CHEN Han , TAN Jian-mei , WU Bing. Design of multi-channel waveform generation system applied in DAR[J]. Modern Electronic Technique, 2012, 35(9): 19-21,24 |
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| Authors: | CHEN Han TAN Jian-mei WU Bing |
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| Affiliation: | (The 38th Research Institute,China Electronics Technology Group Corporation,Hefei 230088,China) |
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| Abstract: | DDS is one of the key technologies to achieve T/R all digital beam forming in digital array radar(DAR).A design scheme of multi-channel waveform generation system based on DDS has been presented,in which system integration design including waveform generation,waveform agility and amplitude/phase control has been fabricated in a single 25 cm×12 cm PCB.16 channel IF radar signals with frequency,amplitude and phase controlled independently can be generated in the system,which satisfies the needs of high integration,miniaturization,low cost and multi-function in the T/R modules of DAR.The main technology specification of the system show that the signal bandwidth is 1~120 MHz changeably,isolation among channels is above 60 dBc,SNR of narrow band is superior to 65 dBc,which fulfill the requirements in DAR. |
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| Keywords: | digital array radar waveform generation DDS miniaturization |
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