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宽带跳频信号捕获分析技术
引用本文:朱卫国,白皓.宽带跳频信号捕获分析技术[J].国外电子测量技术,2010(12):28-30,42.
作者姓名:朱卫国  白皓
作者单位:中国电子科技集团公司第四十一研究所电子测试技术国家重点实验室,青岛266555
摘    要:当前跳频通信技术已广泛的应用于军事和雷达通信中,本文介绍了基于FPGA的跳频信号捕获分析方法,通过高速数字信号处理,能对跳频速率、跳频驻留时间、跳频带宽、跳频图案、频率合成稳定时间等参数进行测量,解决了高速数字下变频、高速移相及抽取滤波、实时FFT、跳频参数计算等关键技术。实验测试表明,该方法捕获速率快、重构性强,可实现对实时带宽高达175MHz的高速跳频信号的实时捕获。

关 键 词:跳频信号捕获  免混频  高速滤波  频率模板触发  FFT

Technique of capturing and analysis wide bandwidth frequency hopping signal
Zhu Weiguo,Bai Hao.Technique of capturing and analysis wide bandwidth frequency hopping signal[J].Foreign Electronic Measurement Technology,2010(12):28-30,42.
Authors:Zhu Weiguo  Bai Hao
Affiliation:Zhu Weiguo Bai Hao(The 41st Research Institute of CETC,National Key Lab of Electronic Measurement Technology,Qingdao 266555,China)
Abstract:Frequency hopping communications technology has been widely used in military and radar communications recently.The article describes the method of hopping signal capture and analysis based on FPGA.It can measure parameters such as frequency hopping rate,hopping dwell time,frequency hopping bandwidth,hopping pattern,frequency synthesizer settling time by high-speed digital signal processing.The method solves the key techniques of high-speed digital down conversion,high-speed shift phase,decimation filter,real-time FFT and frequency hopping parameters calculation.Experimental tests show that the method has high capturing rate and perfect reconfiguration.It can capture high-speed frequency hopping signal of real-time bandwidth up to 175 MHz in real time.
Keywords:Hop signal capture  Free from mixing  High-speed filter  Frequency template trigger  FFT
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