一种高性能跳频信号源的设计与实现  

The Design and Implementation of a High Performance Frequency-hopping Signal Source

作　　者：李锋[1] 盛利元[1] 杨俊[2] 李献斌[2] 

机构地区：[1]中南大学物理科学与技术学院,长沙410083 [2]国防科学技术大学机电工程与自动化学院,长沙410073

出　　处：《宇航计测技术》2010年第6期35-38,5,共5页Journal of Astronautic Metrology and Measurement

基　　金：国家自然科学基金资助项目(60672041)

摘　　要：设计了一种高性能跳频信号源。该信号源以FPGA为控制电路核心,在FPGA内部实现了信号源数字部分相关电路功能,利用高性能的AD9777实现数模转换,通过串行通信SPI接口控制AD9777的工作模式;该跳频信号源采用改进的L-G模型电路作为跳频序列发生器,采用正弦波直接频率发生器作为跳频信号源的基础。实验测试证明:该跳频信号源性能良好,能满足实际工程的需要。A frequency-hopping signal based on FPGA and AD9777 is designed. The signal source＇ s control circuit core is FPGA, the realization of circuit digital part is based on FPGA. It uses the high-performance AD9777 to achieve digital-analog converter and controls AD9777＇s operating mode through the SPI serial communication interface; the frequency-hopping signal source uses the improved L-G model circuit as the frequency hopping sequence generator and direct frequency sine wave generator as frequency-hopping signal source basis. Experimental tests prove that the signal source has good performance and can meet practical engineering requirements.

关 键 词：跳频 信号源 控制电路 数模转换 

分 类 号：TB973[一般工业技术—计量学]