| 摘要: |
| 为了提高DSSS信号率线检测器性能，将Duffing 振子用于DSSS信号的率线检测。阐述
了基于Duffing振子的检测方法，给出了扩频信号和Duffing振子策动力的相差与最低可检测
信噪比之间的关系曲线及方程。仿真表明，该方法能检测到信噪比为-29.01 dB的DSSS/BPSK
信号。 |
| 关键词: 直接序列扩频信号 率线检测 Duffing振子 混沌微弱信号检
测 |
| DOI： |
|
| 基金项目: |
|
| Rate line Detection of Direct Sequence Spread Spectrum Signal Based on Duffing Oscillator |
| JIN Hu |
| (PLA Electronic Engineering Institute，Hefei 230037，China) |
| Abstract: |
| Duffing Oscillator is used to detect rate-line of direct sequence s
pread spectrum(DSSS) signal for the purpose of improving the performance of ra
te-line detector. The detection method based on Duffing oscillator is discussed.
Relative curve and equation between minimum reachable signal-to-noise ratio(S
NR) and phase difference of DSSS signal and the reference signal of Duffing osci
llator are presented. Simulations show that DSSS/BPSK signal at SNR=-29.01 dB
can be detected by the method. |
| Key words: DSSS signal rate-line detection duffing oscillator chaotic weak signal detect
ion |
