摘要
描述直接数字频率合成器DDS(DirectDigitalSynthesizer)的组成,构建一种基于DDS的六路铁路信号发码器。分析信号的产生精度。给出系统的硬件框图和软件流程图。
The constitute of the direct digital synthesis（DDS） was described. Six channels railway FSK signal generator based on DDS was designed for debugging command of the domestic railway signal equipment. The hardware construction and the algorithm flow were also presented, at the end the precision of the generating signal was analysed.
出处
《铁路计算机应用》
2006年第8期45-47,共3页
Railway Computer Application
关键词
直接数字频率合成
频移键控
直接数字调制
铁路发码
direct digital synthesis
FSK（frequency shift keying）
direct digital modulation
railway sending code
