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lock-in_amplider
- 锁定放大器是利用相关技术从噪声中提取微弱信号的常用方法之一。可以证明，当信号的频率和相位已知时，使用相关检测技术能使输出信号信噪比最大。数字锁定放大器比模拟锁定放大器具有稳定、精度高等优点，并且数字滤波器的通带可以设置的非常窄，以便滤除噪声。-Lock-in amplifier is a common method using correlation techniques extracting weak signals the noise in. It can be shown when th
jiejuan05
- 激光自混合干涉，相位解卷，当光反馈程度处于弱反馈水平下时的SMI信号发生器-Laser interference mixed phase solution volume, when the degree of optical feedback under weak feedback level of SMI signal generator
EMD-Decomposition
- 对于微弱信号的提取，经验模态分解具有很强的功能，基本上能提取有效信号-For the extraction of weak signals, empirical mode decomposition with strong capabilities, basically extract the effective signal
m-sequence-detection
- 基于m序列编码信号的水下微弱目标检测方法。研究水下微弱目标检测的匹配滤波器方法；m序列编码信号的微弱目标检测性能-Based on m sequence coding signal of underwater weak target detection method. Study of matched filter method of underwater weak target detection M sequence encoding signal of weak target detec
Soft-threshold-denoising
- 复杂噪声背景下，微弱振动信号去噪方法之小波包软阀值去噪-Complex noise background, the weak vibration signal denoising method of wavelet package soft threshold denoising
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- 微弱正弦信号加入强度为1的高斯白噪声并画出频谱图(The weak sinusoidal signal is added to the gaussian white noise and the spectrum is drawn)
cyclostationary_toolbox
- 循环平稳信号是一类特殊的非平稳信号，其统计特征具有随时间呈周期变化的特点。旋转机械由于周期运行方式其振动信号具有循环平稳特性，因此利用循环平稳分析方法能够提取出在平稳假设下所不能得到的隐藏故障特征信息，为有效地分离和识别旋转机械早期微弱故障特征提供可能。(The cyclostationary signal is a special type of non-stationary signal whose statistical characteristics have a periodic va
蚁群优化小参数随机共振程序包
- 随机共振算法，用于增强弱信号，提高信噪比(Stochastic resonance algorithm for enhancing weak signals and improving signal-to-noise ratio)