| 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： |
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| 基金项目: |
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| 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 |
