噪声

This algorithm changes the detect points on the target trajectory to the respective curve in parameter space, which takes full advantages of the target detect data in a certain period, and the trajectory characteristics can also be picked up even under low SNR.

该算法把航迹上的观测点变换为参数空间的对应曲线，充分利用一段时间内的目标观测数据，在低信噪比下也能从背景噪声中提取目标的航迹特征，提高了声呐的检测概率，且对部分信息和数据的缺失不敏感。

The key factors to effect the curve resolution ability were studied and the limit of curve resolution ability in theory was determined.

通过线性空间中的几何模型，确定了影响体系组分分辨能力的关键因素，结合噪声分布提出了组分分辨能力的理论极限。

The systemic experiments are done on the relationship between the output power and the cavity parameters such as the radius of the curved mirror, the reflectivity of the output mirror, the length of the two arms and so on.

本文为进一步将其做成新型、高效、低噪声再生放大器提供了必要的依据。标签激光技术再生放大飞秒激光大焦斑折叠腔 laser technique regenerative amplifier femtosecond laser large beam size folded cavity

Drum-type gear can reduce driving noise of cyclecar, but it is difficult to be processed.

摘 要：为解决鼓形齿可以有效降低机动车传动噪声但难以加工的问题。

This algorithm can estimate carrier frequency, and rate of the PN code, eliminate the effect of noise using the second order cyclic stationary characteristic without a prior knowledge.

该算法在先验知识缺乏的情况下，充分利用直扩信号的二阶循环平稳特性，排除噪声干扰，对载频和码速率进行估计。

Error-correction is more popular used to check error in data communication.It can detect whether packet has been cor-rupted during transport by cyclic redundancy check.

术创新1概述在数据通信中，由于随机噪声和干扰等因素的影响可能会产生数据传输错误。

As the frame work of internal combustion engine, the cylinder block is the mainnoise radiation surface.

机体作为内燃机的骨架，是内燃机噪声的主要辐射表面。

The theory of envelopes of one-parameter family of surfaces is used to determine the surface geometry of cylindrical cam profile.

因此，基于NURBS的空间凸轮设计方法简单易行，用该方法制造的空间凸轮在高速传动时具有传动平稳、噪声低、使用寿命长等优点。

The estimation methods of damping factor of bellows under noise environment by free vibration response were presented.

利用小波去噪抑制测量噪声的影响，采用Hilbert变换法和峰值法估计波纹管的阻尼系数。

Damping technology is one of effective approaches to reduce noise of automobile.

阻尼减振技术是解决车内噪声问题的有效途径之一。

I am sure after a few weeks of adaptation and familiarization I will have no difficulty in functioning on a daily basis in an English speaking society or in participating fully in graduate studies.

在大学的三年的学习生活不仅给予我自身的充实，更重要的是磨练和培养了我较强的自觉能力和严谨，踏实的作风以及不怕困难的精神，对未来充满了信心！

As the first volcanoes erupted, one of the gases that bellowed out was steam.

在第一批火山喷发时，喷出的气体之一就是水蒸汽。