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滤波器时延
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  “滤波器时延”译为未确定词的双语例句
     The minimum number of attenuation zeros is estimated, and two examples are given.
     文中对需要的最小衰减零点数作了估计. 实例表明,用这种方法设计的滤波器,时延小,相位特性非常接近线性.
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  相似匹配句对
     Kalman Filter for Delays
     卡尔曼时延滤波器
短句来源
     An Optimal Design Method of Constant-Delay Filter.
     恒时延滤波器的最优化设计
短句来源
     Decentralized Filter
     分散滤波器
短句来源
     Transmission Line Filters
     传输线滤波器
短句来源
     Stability of networked control systems with time-delay
     时延网络控制系统的稳定性
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  filter delay
For example, the filter delay model is hard to model in the C model, but will be modeled in the Verilog model.
      
The 6.0-GHz component of the impulse couples to the output immediately while the 3.0GHz component experiences the full filter delay.
      
These encoders are created by multiple FIR filter delay line with coefficients either 1 or 0.
      


This paper points out that for the embedded zerotree wavelet(EZW) image coding, the discrete wavelet transfor(DWT) must be calculated with the original coefficient of the filters,scaling the coefficient of the filters can influence the performance of the coding.The delay of the low pass filter also has important effect on the coding performance,in order to ensure the self similarity among the images of the wavelet subbands,the delay of the low pass filter must be zero.By using the character of biorthogonal...

This paper points out that for the embedded zerotree wavelet(EZW) image coding, the discrete wavelet transfor(DWT) must be calculated with the original coefficient of the filters,scaling the coefficient of the filters can influence the performance of the coding.The delay of the low pass filter also has important effect on the coding performance,in order to ensure the self similarity among the images of the wavelet subbands,the delay of the low pass filter must be zero.By using the character of biorthogonal wavelets,which have dyadic rational filter coefficients,this paper presents a fast multiplierless DWT algorithm,which is very suitable for EZW image coding.The multiplierless DWT can be performed with only bit shift and integer addition operations,and moreover,the result of the multiplierless DWT is equivalent to the original DWT which is calculated with the original coefficient of the filters.At last,combining with the fast EZW algorithms,a fast and high performance image coding system is presented.

首先分析并指出了对于零数编码来说 ,小波变换时应当使用原始滤波器系数参与运算 ,而对滤波器系数进行缩放会影响其编码性能 .此外 ,低通滤波器时延参数对零树编码性能也有重要影响 .为了保证小波变换后各小波子带图象之间的自相似性 ,就必须使低通滤波器的时延为零 .在此基础上 ,针对具有二进系数的双正交小波滤波器 ,提出了一种适合零树编码的快速小波变换算法 ,此算法不但以移位代替了乘法运算 ,而且与使用原始滤波器系数的变换等效 .最后 ,结合快速零树编码算法 ,实现了一种快速高效的编码系统 .

In this paper the problem of joint estimation of PN code delay and multipath channel coefficients is considered. We present an estimator based on the unscented filter (UF) for the joint estimation of delay and multipath, and obtain the simulation results of the estimator. Next the mean square error (MSE) of the UF estimator is compared with both the MSE provided by EKF and the Cramer - Rao lower bound. The results show that the UF performs better than the EKF in multipath channels.

研究了多径信道中PN码时延和信道系数的联合估计问题,提出了一种基于无气味滤波器的时延和多径联合估计方法,得出了频率选择性信道中估计器的仿真结果.然后将参数估计的均方误差与使用扩展的Kalman滤波器得到的均方误差、克拉美-罗限进行了比较,结果表明在多径信道中无气味滤波器的性能比扩展的Kalman滤波器性能更好.

Quantitative studying method is used to analysis the property and limitation of digital filters in order to process nuclear logging signals using digital filters. The solution method to depth delay of digital filtering methods and the method to calculate the number of the filters is given out to meet with questions existing in the course of the appliance. The researching result shows that it has good effect on processing nuclear logging signals by selecting filtering method and the number of the filters.

为了便于选用数字滤波器处理核测井信号,采用定量研究的方法,分析了各种数字滤波器的性能和局限性,针对应用过程中存在的问题,提出了解决数字滤波器时延特性的技术途径和确定滤波器点数的方法。结果表明,合理选用滤波方法及滤波点数,能够明显改善核测井信号的滤波效果。

 
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