摘要
为了满足雷达对信号源的质量要求,设计了一种基于FPGA(现场可编程门阵列)+DDS(直接数字式频率合成器)的控制架构。根据AD9915的特点设计了控制系统的硬件结构,给出了FPGA的软件控制流程,并对AD9915各个控制寄存器的设置和时序进行详细说明。最后通过FPGA控制DDS芯片产生一段700 MHz到740 MHz之间的扫频信号。实验结果也证明输出波形质量和效果很好,能够满足雷达的性能需求。
In order to satisfy the quality of the signal sourcein radar system,an AD9915 oriented control system was proposed based on FPGA.The hardware of the control system was designed according to the structure of AD9915.And the designed flowchart of corresponding software is well illustrated.It described the setting of each control-register and requirement of timing of AD9915 in detail.Finally,according to the generated sweep signal between 700 MHz and 740 MHz through FPGA controlled DDS chip,The result proves that the wave is high quality and good effct.It fully demonstrates that the proposed control system can meet the requirements of radar.
作者
李玲霞
贾帅
卢伟
刘峰
LI Lingxia;JIA Shuai;LU Wei;LIU Feng(Chongqing University of Posts and Telecommunications,Chongqing Key Lab of Mobile Communications Technology,Chongqing 400065,China)
出处
《电子器件》
CAS
北大核心
2018年第2期489-494,共6页
Chinese Journal of Electron Devices
基金
国家自然科学基金项目(61301126)
重庆市基础与前沿研究计划项目(cstc2013jcyj A40032)
重庆邮电大学博士启动基金(A2012-33)
重庆邮电大学青年科学研究项目(A2013-31)
