The present paper deals with the signal-to-background ratio and detection limit of derivative spectrometry.
本文比较研究了导数光谱法和常规光谱法的信背比、传统检出限和真实检出限。
CLIA using acridinium ester derivatives as chemiluminescent label has advantages of low background and high signal-to-noise ratio.
以吖啶酯衍生物为发光标记物的CLIA的特点是：自然本底低和信噪比高。
Experimental results showed that the algorithm can process with high detection ratio and high precision registration noise-corrupted images and images with complicated background.
实验结果表明，该算法能处理背景复杂和多噪声的图像，具有极高的检测率和精确度。
The results also show that the performance of this communication system can be affected by background optical, APD gain and modulation extinction ratio.
该通信系统还受背景光、雪崩光电二极管（APD）增益和调制消光比等因素的影响。
By means of the principle of correlation analysis, this paper introduces an approximate method for estimating signal-to-noise ratio on random noise background.
本文利用相关分析的原理，提出一种在随机噪音的背景上估算信噪比的近似方法。
In the new energy model, the homogeneity of a target and its area ratio to background was pay attention to.
针对这一问题给出了改进的拟合能量模型，新模型兼顾到了目标的同质性信息与其所占面积比例的关系。
We theoretically discussed the synchronization sample gate time determination by considering the optimal Signal-to-Noise Ratio (SNR) where the background showed time-uniformity distribution.
本文通过最佳信号噪声比分析，讨论了单分子辐射单光子在具有时间均匀分布背景信号时对同步取样时间的选取。
The targets SNR(Signal Noise Ratio)and contrast are very low when the target is in the sea background in which there are sea waves and the reflexing light from the stretch welter.
海面背景下海面及连绵起伏的波浪反光使图像的信噪比和对比度都较低，而且舰船目标像素较少。
However, in respect of a vibration acceleration signal, the signal to noise ratio (SNR) is often so small that the periodic impulse component is submersed in its intense background noises.
通常检测的机械振动加速度信号，由于信噪比太低，即使存在周期性的冲击分量也往往被淹没在强的背景噪声之中。
In this simulation. the density ratio of beam electron and background electron is 0.125.
数值模拟的束流密度与背景电子密度之比为0.125。数值模拟的结果说明，两者相符较好。
A titration of the staining antibody is important to do because this will decrease background staining and increase signal to noise ratio.
因为这将会减少沾染的背景和增加信号谣传比，所以沾染抗体的一个滴定很重要做。
A method proposed in this paper avoids the log-transformation in view of its drawbacks, specially the log-ratio transformation, but normalizes the data after background correction.
鉴于对数转换的缺点，本研究提出一种非转换方法，即背景校正后直接进行数据标准化。
The mixture ratio of the under-seawater durable concrete is studied under the background of construction of the Bridge over the Hangzhou Bay.
以杭州湾跨海大桥为背景，着重对海工耐久混凝土配合比进行了研究。
Tiny changes in a moving object can be detected by rebuilding the image background using the algorithm and calculating the ratio of pixel changes by means of the difference image algorithm.
用此算法重建背景图像以及用图像差分算法计算像素改变比例，能监测慢速、微量变化的运动物体。
Furthermore, the background correction during the oxygen isotope ratio measurement with MAT-CH5 mass spectrometer was chosen as an example.
而且以MAT - CH_5质谱计测量氧同位素比时的本底校正作为例子。
CLIA using acridinium ester derivatives as chemiluminescent label has advantages of low background, high signal-to-noise ratio, no need of catalyst and simple luminescence system.
以吖啶酯衍生物为发光标记物的CLIA的特点是：标记简单、标记物稳定、不需要催化剂、自然本底低、受外界干扰因素少、信噪比高、发光体系简单等。
In the receiving system, the narrow-band interference filter is introduced in order to reduce the background light, increase the signal transmission rate, and improve the signal-to-noise ratio.
在接收系统中，引进窄带干涉滤光片，减少背景光的干扰，增加信号光透射率，改善信噪比。
In order to evaluate results of pretreatment, two definitions of signal-to-noise ratio and background suppression factor were given.
为了评价预处理结果，定义了两个评价参数——信噪比和背景抑制因子。
The signal compensation current degrades the radiation background and increase the signal-noise ratio respectively.
设计的信号补偿电路，扣除了直照信号的本底干扰，提高了探测器的信躁比。
The invention relates to a target source with adjustable contrast ratio. The target of the target source is arranged between target integrating sphere and background integrating sphere;
本发明涉及一种可调对比度目标源，该目标源的目标在目标积分球与背景积分球之间；
The invention relates to a target source with adjustable contrast ratio. The target of the target source is arranged between target integrating sphere and background integrating sphere;
本发明涉及一种可调对比度目标源，该目标源的目标在目标积分球与背景积分球之间；
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