摘要
针对某机载电台技术指标的检测控制需求以及该电台激励信号和响应信号的特点,提出一种以FPGA(EP1C12)作为控制核心,采用DDS(AD9850)+PLL(MC145152)数字频率合成的跳频信号发生器的实现方案,介绍了该信号发生器的硬件组成框图及工作原理,并详细描述了各个模块的具体软件实现。通过QuartusⅡ7.0仿真,并将相应的程序加载到硬件平台中,证明已达到设计目的。该跳频信号源可在45.5MHz范围内实现全频段跳频。
Considering the detection requirement of the airborne station and the characteristics of stimulation and response signals, a frequency hopping signal generator based on FPGA is designed, in which digital frequency synthesis is implemented by AD9850 and MC145152. The hardware block diagram and principle are introduced. The software programmed in VHDL for each module is described in detail. And then, the program is simulated in Quartus Ⅱ 7.0 and configured into FPGA. The result shows that requirement is achieved and the Frequency can hop in the range of all band of 45.5MHz.
出处
《微计算机信息》
2009年第17期33-35,共3页
Control & Automation
