| 1. | This method gets rid of the interferential signal successfully but does not lose useful signal
该方法能有效地去除干扰信号，又不会损失有用信号。 |
| 2. | Eventually , the filtering program which can successfully take the useful fault signal out from the background with strong noise is designed
对图象数据的处理采用turboc + + 3 . 0作为编程工具，成功地设计了在强噪声背景下将微弱的有用信号提取出来的滤波程序。 |
| 3. | In the digital mobile communication , with the effect of modulation , transmission channels and demodulation , the received signal ineluctably has some distortion . frequncy offset is one of them
在移动通信系统中,信号经过调制发射、信道传输和接收解调的过程中,不可避免的会引入一些干扰,使得有用信号受到影响。 |
| 4. | In new system the error pa can also amplify the original signal , so the performance of whole amplifier system increases . since rf predistorters used in the new system , the linearity and power efficiency can be enhanced
该技术改变了误差通路中的信号特性，使误差放大器也输出有用信号功率，提高了整个放大系统的性能。 |
| 5. | With the research development in antenna area , smart antenna , which could dynamically adjust antenna pattern in order to trace useful signals and suppress interference and noise , comes into researchers ’ sight
随着天线领域研究的进展,一种可以动态调整天线方向图,有效跟踪有用信号,抑制干扰和噪声的天线系统? ?智能天线系统,进入了研究者的视野。 |
| 6. | Compared with the traditional methods of artifacts elimination , ica , a kind of spatial filter , does not be restricted by the case of spectrum overlapping , and have a good reservation of useful detail signals
此外， ica这种空间滤波器不受信号频谱混迭的限制，消噪的同时能对有用信号的细节成分做到很好的保留，很大程度上弥补了时频域方法的不足。 |
| 7. | Experimental result shows the algorithm has nearly the same edge preserving performance as nonlinear multiwavelet transform , and nearly the same speckle noise suppression performance as filtering
此算法对原图像进行多小波变换，然后在不同尺度，不同方向进行自适应阈值处理，仿真结果表明：本算法能够有效地抑制了斑点噪声，又保留有用信号及边缘信息。 |
| 8. | So how to select threshold effectively to avoid lose useful signal is problem worth to research . some research is processed here on the problems above as follow : ( 1 ) . in exordium the research purpose and means is introduced
因此，在去噪的过程中如何更有效地进行阈值选取，使得噪声被去除的同时尽可能的避免有用信号的丢失，也是一个值得研究的问题。 |
| 9. | Do a estimation is often encountered in vary application of radar and communication system . the dissertation then discusses the estimation of interested signals in chaotic noise . we analyzed three different algorithm for this purpose
混沌背景中的有用信号的参数估计问题是在雷达应用(如波达方向估计)和混沌调制的通信系统中窄带干涉抵消中经常遇到的重要问题之一。 |
| 10. | Under the research of the characteristic of three classical analog filter with simulation software - matlab , this paper devised lowpass circuit that not only can keep the useful signal out of distortion but also benefits the following sample tache and filter tache
用matlab分析了三种经典模拟滤波器的滤波性能，设计出了能保持有用信号不失真又有利于后面的采样和数字滤波环节的低通电路。 |
