摘要
频率合成器是一种频率稳定度较高的离散间隔型频率信号发生器,广泛应用在通信、雷达、仪器仪表及导航系统中。在研究高集成度频率合成器AD9954的基础上,给出了AD9954在跳频系统中的应用方案。跳频方案采用软件无线电技术,采用DSP作为伪码发生器,控制DDS输出频率,得到相应的跳频图案。实验表明该设计合理可行。
The frequency synthesizer is a kind of discrete frequency singal generator with high stability, and it is widely used in communication, radar, apparatus and navigation system. Based on AD9954,a highly integrated frequency synthesizer,the operation and application theory of AD9954 in frequency hopping system are introduced.The frequency hopping system based on software radio,DSP is used to generate quasi,stochastic sequence and control the output frequency of DDS to construct required hopping maps. This application is quite feasible in experiment.
出处
《国外电子元器件》
2007年第2期50-52,共3页
International Electronic Elements
关键词
直接数字频率合成器
AD9954
跳频
direct digital frequency synthesizer
AD9954
frequency hopping
