| 1. | Tgnp : the greatest noise power
最大噪声功率 |
| 2. | The power spectrum of white noise and the diagnosis of work conditions in the random process
随机过程的白噪声功率谱及工况诊断 |
| 3. | Acceptance code for gears - determination of airborne sound power levels emitted by gear units
齿轮验收规程.齿轮装置发出的空气噪声功率级的测定 |
| 4. | Flicker noise is approximately simulated by power law model of phase noise spectral density
根据相位噪声功率谱的幂律模型,近似地模拟了相位噪声。 |
| 5. | Acoustics - determination of sound power levels of noise sources using sound pressure - survey method using an enveloping measurement surface over a reflecting plane
声学.用噪声压力测定噪声功率级.在反射平面上利用包封测量表面的测量法 |
| 6. | Aiming at latent damage induced by esd , 1 / f noise spectrum and a new method similarity coefficient based on the matched maxima of wavelet transform modulus are offered at the same time
针对静电在mos器件中引入的潜在损伤，在使用1 / f噪声功率谱监测的同时并提出了一种新的由1 / f信号提取得到的基于子波变换极大模的相似系数表征法。 |
| 7. | On the basis of the theory about wheel / rail noise , the paper analyses the mechanism of wheel / rail noise and the relationship between rolling noise and vibration of railway track components , and describes a way to reduce the vibration energy by enhancing the elasticity of track
运用轨道部件的振动加速功率谱密度函数与轮轨噪声功率谱密度之间的关系，分析了轨道结构弹性对降噪的作用。 |
| 8. | So , both 1 / f noise power spectrum measurement and similarity coefficient extracted from its time series can offer economical , effective and indestructible tool to detect the latent damage induced by esd and hci for mosfets
因此，无论是1 / f噪声功率谱的测试还是由其时间序列提取得到的相似系数均可以作为经济、有效、完全非破坏性的工具，替代传统的电特性用于检测静电引起的mos器件潜在损伤以及热载流子注入损伤。 |
| 9. | Abstract : to against the fact of the commercial available white noise generators are very expensive which is not good for general operations , a simple and effective limited band white noise generator is design . the generator is using the feature of dual polarity transistor , i . e . , the power spectrurn density of particulate noise is not related to frequency in very wide band and close to white noise . the concrete circuit is also given
文摘:针对市售白噪声发生器价格昂贵，不利于一般场合使用的问题，介绍利用双极性晶体管散粒噪声功率谱密度在非常宽的范围内与频率无关，属白噪声这一特性，设计了一种简捷、有效的限带白噪声发生器，并给出了具体电路。 |
| 10. | In chapter 3 , we discuss the problem of doa estimation in the presence of spatially nonstationary noise fields . an estimate of the colored noise covariance matrix is firstly given . the received data for parameter estimation is then prewhitened using the estimated noise covariance , hence , overcoming the highly biased estimates . finally , adaptive beamforming with the modified weight is also performed . computer simulations show that the proposed method can completely remedy beam distortion . 3
在第三章讨论了一种在环境噪声为白噪声而阵元噪声为空间非平稳情况下的doa估计问题，给出了一种有效的估计阵元噪声功率的方法，进而利用估计的噪声协方差矩阵进行预处理而实现色噪声环境下的doa估计，理论分析和仿真结果均表明了本章提出的方法的有效性。 |
