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- S/N (signal to noise ratio) is low about from 1.315 to 1.668 (average S/N). 信噪比很低，估算平均信噪比在1.;315一1
- 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 pulsar signal is a kind of typical nonstationary random signal which SNR (Signal to Noise Ratio) is very low. 摘要脉冲星信号是一种典型的非平稳信号，且信噪比非常小。
- In low Signal to Noise Ratio (SNR) range, the close-form expression of the optimal BFV is derived. 在低信噪比区域，求出了最优波束成形向量的闭合解；
- Input signal autorange for optimum signal to noise ratio. 自动输入信号调控,以获得最佳信号与噪音的比。
- 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。
- This estimator has the advantage of high accuracy even on low signal to noise ratio conditions, but its implementation is relatively simple. 这种频率跟踪方法的优点是即使在很低的信噪比下仍然能获得高的跟踪精度，且实现相对简单。
- This paper presents a structure based on noncoherent-SPRT algorithm for the sequence acquisition under large frequency offset and low signal to noise ratio in DS/SS systems. 该文研究大频偏低信噪比情况下DS/SS系统中的序列捕获问题,介绍了一种基于非相干序贯检测算法的捕获结构。
- 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。
- Numerical results show that for the data with either high or low signal to noise ratio (SNR), inversion solution depends weakly on regularization operators, while strongly upon regularization parameter. 模拟表明，无论是高信噪比数据，还是低信噪比数据，反演的含水量在小正则化参数时，对模型约束的依赖性不大，主要受正则化参数影响。
- How to detect the LPI radar signal and estimate the signal parameters in low signal to noise ratio condition is very important in modern Electronic Warfare (EW). The research in this field is belongs to the frontier of EW technology. 如何在低信噪比下检测LPI雷达信号并进行参数估计在电子战中具有重要的意义，这方面的研究至今属于电子战的前沿课题之一。
- An algorithm based on the Haar wavelet transform(HWT) was developed for blind estimates of pseudo-random code(PC) rates and symbol periods of direct sequence spread spectrum(DS/SS) signals in low signal to noise ratio environments. 为解决低信噪比下直扩信号的参数估计问题,提出了一种基于H aar小波变换实现直扩信号伪码(PC码)速率和符号周期盲估计的新型算法。
- 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。
- State of the art fiber optic components deliver high signal to noise ratio and long-term stability. 光缆联接的光路保证了系统的柔和性以及高信噪比和长时间工作稳定性。
- Methods of estimating baud rate, Signal to Noise Ratio (SNR) and reference phase are investigated. 研究了自适应调制中波特率，信噪比和载波相位等参数的估计算法；
- Signal to Noise Ratio (SNR): The ratio of the signal to the random noise in a set of data. 信噪比：平均到一个数据单元的信号与随机噪声的比值。
- This paper introduced the estimation of clutter noise ratio and its application in MTD system in detail. 详细介绍了杂波噪声功率比的估计方法及其在MTD系统中的应用。
- Comparison of RLS algorithm and LMS algorithm for different signal to noise ratio in the case of the learning curve. 比较RLS算法和LMS算法在不同信噪比情况下的学习曲线。
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries
