...兵器电子领域权威资讯传媒 关键词：直扩信号；相关检测；伪码周期 [gap=944]Key words:Direct sequence spread spectrum signal(DS/SS)； Correlation checkout (detection)； Pseudorandom code period ..
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A detection scheme that extracts DS signal from the complex background noises is investigated in chapter 4.
本文在第4章提出了一种从多种干扰中提取直扩信号的检测方案,与传统检测方案不同的是该方案引入了独立分量分析(ICA)技术。
参考来源 - 非合作直扩通信信号检测研究Direct sequence spreading spectrum signal has been widely used both in military and commercial telecommunication area, owing to the ability of working at low signal-to-noise ratio (SNR), strong anti-jamming, lower probability interception and mitigating the effects of multi-path fading effects.
直扩信号由于具有工作信噪比低、强抗干扰性、低截获概率、能够抑制多径效应等优点,已经在军事和民用通信领域得到广泛应用。
参考来源 - 直扩信号码序列恢复算法及系统性能仿真研究·2,447,543篇论文数据，部分数据来源于NoteExpress
参数估计主要对直扩信号的载频、码片时宽和幅度进行了估计。
Cyclic period chat spectrum estimation is used on parameters estimation such as carrier frequency, chip width and amplitude.
如何准确获得直扩信号中的伪码码型是解决直扩信号侦收的关键。
How to acquire the pseudo-random code type of DS-SS signals is an important problem in obtaining the information from the DS-SS signals.
直扩通信对抗包括直扩信号的盲检测、参数估计和扩频码序列恢复等内容。
The blind detection, parameters estimation and recovery of spreading sequences are the main contents of DS communication counter.
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