查询词典 noise

Based on Datong city, this text investigated the feature of moise pollution, analyzed the cause of noise occurring, and explored the method to solve vehicular noise .

本文通过对大同市交通噪声的详细调查和研究，找出了噪声污染源的特征、规律并分析噪声产生的原因，探讨交通噪声的解决办法

The paper puts forward a set of faults diagnosis methods of testing the noise of the three-phase motor current which shows the characteristics of the motor faults, and multi-varieties time series models of the noise is established, the multi-varieties residual series is changed to the monistical as the fault detection index.

提出以测试电机的三相电流噪声为电机故障特征信号的诊断方法，建立电机电流噪声多元时序模型，将时序模型的多元残差序列化为一元序列作为故障总体检测指标。

It results that although the improvement factor is higher with the number of sub-arrays, the distribution rule of residue clutter plus noise power or the output signal to clutter plus noise ratio doesn't show monotonical relationship with the number of sub-arrays.

研究结果表明：虽然子阵数越多改善因子越高，但在辅助样本数一定的前提下剩余杂噪功率和输出信杂噪比的分布规律并不随子阵数增多而单调趋好。

In addition, the OAG increases monotonically with the increase of the noise strength and the noise correlation rate.

输出幅度增益随噪声强度、自相关率的增大而单调地增大。

Under the condition of varying , the ratio between noise levels in local sensors, this dissertation derives the analytic expression of performance of the centralized OS-CFAR detection for and local signal-to-noise ratio in nonhomogenous background.

本文在局部传感器背景噪声功率水平间的相对比例系数变化情况下，推导出了集中式 OS-CFAR 检测在且局部观测信噪比条件下在非均匀杂波背景中检测性能的解析表达式。

The results of simulation indicate that the discrimination capacity of more than 99% and 96% respectively can be obtained when the input image is destroyed by nonoverlapping background noise and substitutive noise under the proposed technique.

仿真实验结果表明：当输入图像受到非覆盖性背景噪声影响时，识别度表现平稳，能够维持在99%以上；当输入图像受到替换噪声影响时，识别度能够达到96%以上。

The vibration and noise of the elevator's ascending and descending are measured and the solution to solving the elevator vibration and noise overproof is proposed.

对电梯运行的振动和噪声进行了实验测试，给出解决轿厢振动和噪声超标的方法。

ResultsThe major occupational hazardous factors in the project were coke dust, carbon monoxide, benzopyrene, benzene soluble matter and noise. The detection results showed that MAC of benzopyrene on coke pushed side, TWA of benzene soluble matter of two posts and noise level of coke griddle were overproof the rest were eligible.

结果 该扩建项目主要职业病危害因素是焦炭尘、一氧化碳、苯并芘、苯溶物、噪声等；检测结果示焦侧苯并芘的最高接触浓度、炉盖工、出炉工苯溶物的时间加权平均浓度及输焦振筛的噪声强度超标，其余检测点检测结果均符合国家职业卫生标准。

For the multisensor linear discrete time-varying stochastic control systems with the different local dynamic models, using the Kalman filtering method, under the optimal fusion criterion weighted by scalars, the unified and universal optimal information fusion white noise deconvolution estimators are presenced, and for the corresponding time-invariant systems, the steady-state optimal information fusion white noise deconvolution estimators are also presented.

对于带不同局部动态模型的多传感器线性离散时变随机控制系统，应用Kalman滤波方法，在按标量加权最优融合准则下，提出了统一和通用的最优信息融合白噪声反卷积估值器，并对定常系统提出了稳态最优信息融合白噪声反卷积估值器。

For the multisensor systems with uncorrelcted noises,and with unkonw noise varaies.substituting the information fusion noise variance setimators based on the correlct method into the centralized fusion optimal information filter,a self-turning centralized fusion information filter is presenced compared with the self-turning centralized fusion Kalman filter based on the Riccati equation,it can be avoid to compute zhe inverse matrix with high dimension,so that the calculation hurden can be reduced significantly.

对于带未知噪声系统和不相关噪声的多传感器随机系统，将基于相关方法得到的噪声方差带入到集中式融合最有信息滤波器，提出自校正集中式融合信息滤波器。同基于Riccatia方程的集中式融合Kalman滤波器相比它避免了计算高维矩阵的逆，从而减少了计算负担。

And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时，论述了一体化管理体系构建中的几个主要问题，包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。