| 1. | The variations vector is then broken down into " profit signal " and " noise " vectors
然后变量矢量被分成“有效信号”矢量和“噪声”矢量。 |
| 2. | According to signaling theory , dividend is an effective signal for company to transmit its inside information
信号理论认为，股利政策是公司传递内部信息的一个有效信号。 |
| 3. | The profit signal and noise vectors are orthogonal to each other , so the variation vector is the hypotenuse in a right triangle
有效信号适量和噪声信号适量相互正交，所以变量矢量是直角三角形的斜边。 |
| 4. | Beside filtering interference signals and extract effective signals , it is a difficult problem to study the separation of multi - signal of sound wave and vibration
在实际测量过程中，除了过滤干扰信号，提取有效信号外，多振动源信号分离是本文研究的一个难点。 |
| 5. | Based on the difference of maximum modulus evolution between signals and random noises in multi - scale space of wt , the signals from shaking table test are processed for random noise reduction
摘要本文利用小波变换下有效信号有随机噪声在多尺度空间中模极大值不同的传播特性，对地震模拟振动台试验测试信号进行去噪处理，取得良好效果。 |
| 6. | In order to filter out the noise contained in effective optical signal , a new method using the blazed grating to enlarge the angle difference between noise and effective signal , and getting through the iris to get the effective signal was put forward
摘要为了滤除有效光信号中的光噪声，本文提出了一种利用光栅的闪耀特性将噪声和有效信号之间的夹角角度差放大，再通过光阑得到有效光信号的方法。 |
| 7. | Arranged signal activating lock circuit and time - base control circuit in the sound wave receiving circuit to take the initial signal of back wave as the valid one in the cycle , thus to improve the ratio of signal vs . noise and detective precision
在超声波接收电路中设有信号触发锁定电路和时基控制电路。实现以各探头中最早收到的回波信号为本检测单元的有效信号，有效提高信噪比和检测精度； 4 |
| 8. | Facing the problem that we always ask ourselves whether the technique and parmeters we use are suitable , we have to consider it in five main processing step , deconvolution , static correction , normal moveout , noise attenuation and migration
根据噪音在处理过程中的不同阶段表现属性不同，处理中采用不同的处理手段或不同的处理参数分阶段对噪音进行衰减。以便做到最大限度压制噪音，而尽可能不损伤有效信号，提高原始资料的信噪比。 |
| 9. | This can increase efficiently the signal - noise ratio of seismic record , under the general situation , the signal - noise ratio of big scale is small , because low frequency surface wave in big scale is more serious , the correlate of signal is smaller , so weighting stack can press efficiently low frequency surface wave , comparative promote the percentage of the effectual signal in constructing the signal
这样可以有效地提高重构后地震剖面的信噪比，一般情况下，大尺度的信噪比都较低，因为大尺度内的低频面波比较严重，信号相关性较小，这样做加权可以有效地压制低频面波，相对地提升有效信号在重构信号中的百分比。 |
| 10. | This paper applies wavelet theory to process data analysis , mostly focusing on signal de - noise and data compression . the main contributions of this thesis are as follows : 1 ) as discussion and experiment of de - noise method for removing white , noise from pulp thickness signal , a method was developed by utilizing the different characters of evolution of the wavelet transform maximum across scale of efficient signal and noise
本文所作的工作如下： 1 )利用小波变换下有效信号和噪声在多尺度空间中不同的模极大值传播特性，给出了一种去除纸浆浓度检测信号中的白噪声的算法，编制了相应的程序，作为对纸浆浓度检测信号去噪方法的初步探讨和尝试。 |
