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  • 李 冰,高 勇.小波变换在S模式二次雷达信号分析处理中的应用[J].电讯技术,2010,50(7): - .    [点击复制]
  • LI Bing,GAO Yong.Application of Wavelet Transform in Mode S SSR Signal Analysis and Processing[J].,2010,50(7): - .   [点击复制]
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小波变换在S模式二次雷达信号分析处理中的应用
李冰,高勇
0
(四川大学 电子信息学院,成都 610065;2.解放军61398部队,上海 200137)
摘要:
为提高二次雷达(Secondary Surveillance Radar,SSR)信号分析处理能力,针 对傅里叶变换在时频域分析的局限性,利用小波信号奇异性检测特点,通过对S模式询 问、应答信号进行小波分解,计算第一层高频系数,得到信号脉冲持续时间,实现了信号报 头检测,并比较高频系数模极大值,提取出信号调制信息,实现了基于小波变换的二进制差 分相移键控(DPSK)和二进制振幅键控(ASK)解调,验证了小波变换技术分析处理二次雷 达信号的可行性。
关键词:  敌我识别  二次雷达  S模式  小波变换  信号处理
DOI:
基金项目:
Application of Wavelet Transform in Mode S SSR Signal Analysis and Processing
LI Bing,GAO Yong
(College of Electronic and Information Engineering,Sichuan University,Chengdu 610065,China;Unit 61398 of PLA, Shanghai 200137, China)
Abstract:
To enhance the signal analysis and processing ability of secondary surve illance radar (SSR), in allusion to the limitation of Fourier transform in t ime-frequency domain analysis, based on the characteristics of wavelet signal si ngularity detection, through wavelet decomposition of S mode inquiry and respons e signal and then obtaining pulse duration with the 1st wavelet high frequ ency coefficient, the signal preamble detection is realized. By comparin g wavelet high frequency coefficient module maximum value and abstracting signa l modulation information,demodulation with wavelet transformation in binary differential phase shift keying ( DPSK) and binary amp litude shift keying (ASK) is also realized, thus validating the feasibility of a nalysing and proce ssing the SSR signal by wavelet transform.
Key words:  identification friend or foe(IFF)  secondary surveillance radar(SSR)  mode S  wav elet transform  signal processing
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