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- Raw thermal images acquired by pulsed thermography (PT) usually have low signal noise ratio (SNR) and temperature contrast. 摘要脉冲热像检测中直接获取的原始热像往往信噪比较低、对比度较差。
- Below the speed limit, the signal noise ratio of the BEMF signal that is superposed by the PWM signal is too low. 低于这个最起码的初始工作速度，反电动势将被淹没在PWM信号里。
- The results show that the signal noise ratio of MFL signal was improved significantly. 结果表明，采用归一化最小均方自适应滤波方法可使缺陷漏磁信号的信噪比得到显著的提高。
- Moreover, by appending filter and interference light filter, the signal noise ratio of the system is enhanced greatly. 此外，还分析了检测光学系统，对信号中的噪声进行分析，在系统中增加了滤波装置和滤光片，大大提高了检测系统信噪比。
- It is difficult for moving dim target to tracking and detect because the Signal Noise Ratio(SNR) of target is low and it has not texture etc. 研究低信噪比弱小目标的实时检测及跟踪算法,其困难主要为:目标信噪比低,无纹理特征。
- The circular sampling FRIT is first used in the sonar image denoising technique, and makes high improvement to heighten the Signal Noise Ratio. 将FRIT处理技术应用在水下声纳图像去噪技术中，基于该方法提出循环抽样FRIT去噪算法，提高了处理结果的信噪比及边缘保持效果。
- In order to improve the signal noise ratio and the precision of the analysis,a"two-level sifting"is processed in recording and analyzing VLP by HOLTER. 为了提高晚电位分析结果的精确度,提高信号噪声比,在HOLTER记录和分析时,采用了“二级筛选”的设计方法。
- In front-end electronics of PET,in order to restrain noise and improve Signal Noise Ratio of sampled data,a passive second order RC filer is designed. 为了减小PET前端电子电路中信号的噪声干扰,提高信号的信噪比,本文设计了一个二阶无源RC滤波器。
- The holographic volume gratings and reflection holograms having high diffraction efficiencies and signal noise ratio are also fabricated in experiment. 实验中制作出了高衍射效率和信噪比的体积全息光栅和反射全息图。
- Finally, the new assessment index is compared with classical peak signal noise ratio (PSNR) and the result is satisfied for human subjective sensation. 最后，通过试验证明了这种新的评价指标比传统的峰值信噪比(PSNR)更加接近人们的主观视觉感受。
- Under the impact of a large hammer, a high signal noise ratio of the force and velocity can be acquired in the high-strain dynamic testing. 高应变动力试桩法采用数吨重锤锤击，同时实测了桩顶的力信号和速度信号，具有很高的信噪比。
- Finding out the major concentrated frequency band of tool-wear information can enhance SNR(Signal Noise Ratio) and improve tool-wear degree recognition result. 找出刀具磨损信息在可听阈内的主要集中频段能提高切削声信号的信噪比,改善识别结果。
- In order to improve the detecting ability and detection probability of the laser ranger,the Signal Noise Ratio(SNR) of the return signal is to be increased. 挖掘激光测距系统的探测能力、提高探测概率的最终途径是提高激光回波信号的信噪比。
- Under different uniform temperature field,the effects on spectral bandwidth and signal noise ratio(SNR) of the HSI due to the slit s width changing are deduced. 推导出在温度水平变化时,狭缝宽度尺寸的变化对超光谱成像仪光谱带宽与信噪比的影响,得到了超光谱成像仪狭缝的热光谱特性。
- Experiment results show that in low bit rate environment, the new image compression scheme performs better than JPEG in the aspects of perception and PSNR (Peak Signal Noise Ratio). 实验结果表明该算法在低码率下，相比JPEG，获得了在视觉效果和峰值信噪比方面更好的恢复图像质量。
- LF1 LRF is a photon Radar system, the optimum design of the system have been discussed according to the photon measurement distance equation, the configuration of system, signal noise ratio. LF1激光测距仪是一种光子雷达系统。 本文从光子测距方程、系统结构、信噪比分析角度，讨论了系统的优化设计。
- The capacitances in the structure of silicon micromachined gyroscope( SMG) are analyzed, in order to reduce parasitic capacitances in the structure and increase the signal noise ratio (SNR). 为减小杂散电容提高信噪比,分析了硅微机械陀螺仪结构中的电容。
- Using the homophase property of reflection wave flexibly and meticulously, the method can increase the signal noise ratio, purify the background and modify the time section, so that the resulte... 它灵活细致地利用反射波的同相性来提高信噪比、净化背景、修饰时间剖面。使最终的时间剖面得到了进一步改善。
- Experimental results showed that the new method presented here was much effective in removing white noise, and gave better Peak Signal Noise Ratio (PSNR) gains than single wavelet base denoising. 实验结果表明，无论是在视觉效果上还是在峰值信噪比定量指标上该方法去噪效果均明显优于单一小波基去噪。
- Then the low noise amplifier amplifies the signal.Band pass filter and correlated demodulator and other circuits were also used to improve the signal noise ratio and reach wanted amplitude. 之后，前置级的输出信号经过低噪声放大器进行放大，再通过带通滤波以及相关解调等电路实现检测系统需要的输出幅值和信噪比。
