超高速跳频信号源的设计与实现  

DESIGN AND IMPLEMENTATION OF ULTRAFAST FREQUENCY HOPPING SIGNAL SOURCE

作　　者：卿皓 郭英[1] 李红光[1] 

机构地区：[1]空军工程大学信息与导航学院,陕西西安710077

出　　处：《计算机应用与软件》2015年第11期139-142,共4页Computer Applications and Software

摘　　要：跳频速率和带宽是决定跳频系统抗干扰性能的重要参数。基于软件无线电设计思想和架构，研究超高速宽带跳频信号源的关键技术与实现方法。在以FPGA为核心的数据处理模块上进行基带信号产生，并通过FPGA对AD9957的控制，结合乒乓操作，使跳频切换的不稳定时间限制在纳秒级，最终实现中频频段的高速跳频信号产生。测试表明，基于该技术设计的超高速跳频信号源能够稳定实现40-240MHz宽频带范围内200kHops／s跳频信号有效模拟。最后分析了超高速跳频信号源的抗干扰性能，并给出了实验结果。Frequency hopping rate and bandwidth are the important parameters to determine the anti-jamming ability of frequency hopping （FH） communication system. In the paper, based on the software-defined radio design idea and architecture, we study the key technology of ultrafast and broadband frequency hopping signal source and its implementation approach. The core of data processing module is FPGA, the baseband signal is generated on FPGA chip. By controlling AD9957 through FPGA and combining ping-pong operation, we minimise the unstable time of FH switching to nanosecond level, and finally implement the generation of high speed FH signal in intermediate frequency spectrum. Test results show that ultra.fast FH signal source designed based on the technology in the paper can stably realise effective simulation of FH signal with 200 kHops/s within the broadband range of 40 - 240 MHz. In end of the paper we analyse the anti-jamming performance of the uhrafast FH signal source, and present the experimental results.

关 键 词：跳频信号 FPGA AD9957 软件无线电 硬件设计 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]