基于GPGPU的准实时测频技术  

GPGPU-Based Quasi Real-Time Frequency Measurement

作　　者：张朝晖[1] 於建生 薛钰娟[1] 徐勤建[1] 

机构地区：[1]海军指挥学院信息战研究系,江苏南京211800 [2]海军驻合肥地区军事代表室,安徽合肥230088

出　　处：《雷达科学与技术》2011年第2期183-187,共5页Radar Science and Technology

摘　　要：简要介绍了GPGPU技术及CUDA编程架构,并在CUDA技术的基础上应用现代信号处理的方法实现了对超高速采样信号的准实时数字测频算法。仿真表明算法内核的计算延时很小;通过对现场1GHz超高速采样实际信号数据的验证,证明该技术能够满足准实时测量频率和其他脉冲参数的要求,同时对每一脉冲还可给出测频参考误差;并且在典型信噪比下,测频精度远高于模拟测频接收机。该实现与其他实现方案相比,灵活性更好,性价比更高,具有良好的应用前景。This paper briefly introduces the GPGPU technology and the CUDA programming architecture.On the basis of CUDA,modern signal processing method is used to achieve quasi real-time digital frequency measurement algorithm of ultrahigh-speed sampling signals.Simulation result indicates that the algorithm kernel only introduce a very small delay.Through field verification on 1GHz ultrahigh-speed sampling actual signal data,it proves that the technology can meet the need of quasi real-time measurement of frequency and other pulse parameters while each pulse＇s frequency measurement error is given.And in a typical SNR,its frequency measurement accuracy is higher than that of analog frequency measurement receiver.The implementation scheme is more flexible and cost-effective than other schemes,so it has a good application prospect.

关 键 词：通用图形处理器(GPGPU) 准实时 数字测频 超高速采样 

分 类 号：TN971.1[电子电信—信号与信息处理]