查询词典 SNR

The statistical performance of the joint estimation method is discussed based on the simulation, and the results show the good performance of the method at low SNR.

研究了低信噪比情况下利用时频分析方法进行时延和多普勒频移联合估计的性能，表明联合估计方法的统计性能良好。

By using the estimated coefficients of the sub-channels, the SNR of each subchannel can also be obtained.

进一步利用信道估计系数，估计出各子信道的信噪比。

The SNR of DTI data is relatively low, which degrades the quality of visualized tensor field data.

由于DTI数据的信噪比较低，会影响张量场数据可视化的效果。

Because the output signal of the thermopile is very small, a chopper amplifier is needed in the front-end circuits to improve the SNR.

在这前端电路中，由於温度感测器的讯号相当小，截波放大器将在论文中被使用。

Correlation and signal-to-noise ratio of the space sources can affect the resolution of DOA estimation of subspace algorithms. Using this relation, the algorithm changes the correlation and SNR of the equivalent sources by processing the Toeplitz matrix based on the Toep-MUSIC algorithm, so that the resolution of DOA estimation can be improved.

改进算法利用信源间相关性和信噪比对子空间类DOA估计算法分辨力的影响，在Toep-MUSIC算法基础上，通过对Toeplitz重构矩阵的处理，改变了等效信源的相关系数和信噪比，从而使DOA估计分辨力得到提高。

A novel method that makes use of rough set theory to detect moving small target with low SNR in infrared image sequences is presented. First, Morphology Top-Hat operator is used to separate candidate small targets and extract their attributes.

提出了利用粗糙集理论处理不完整信息的能力对红外弱小目标的运动轨迹进行辨识的检测方法。

But the PER is still much higher than that of existing technologies in low SNR.The high reliability of UMB system' s high data rate is also confirmed,the link level performance of UMB system is far ahead of the third-generation communication technologies.

而低信噪比下其误包率仍远高于现有技术，并证实UMB系统高数据速率的高可靠性，UMB系统在链路级性能上远远领先于第3代通信技术。

It is an unfathomed and difficult problem that weak and small targets are detected in complicated background and low SNR .

复杂背景下低信噪比弱小目标的自动检测是当今目标自动探测研究尚未解决的一个难题。

It is an unfathomed and difficult problem that weakandsmall targets are detected in complicated background and low SNR .

摘要复杂背景下低信噪比弱小目标的自动检测是当今目标自动探测研究尚未解决的一个难题。

To aim at parameter estimation of signal to noise ratio and high variance in low SNR based on time frequency distribution, this paper proposed a novel algorithm based on multimodal particle swarm optimization.

针对基于时频分布的参数估计存在信噪比阈值和低信噪比下方差大的问题，提出了一种基于多峰优化粒子群算法的跳频信号参数估计新算法。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。