窄带

In speech communication, almost half of the time is the silence state, which contains much redundant information need to be taken away to improve code efficiency, so the silence frame should be compressed; On the other hand, to satisfy people's listening feelings, speech code implemented on UWB would be a new future's research direction on speech code. Nowadays the compression on narrow band or wideband have been studied a lot, but the silence compression on UWB need to be studied more, which is the main job of this paper.

在语音通信中，平均一半的时间处于无语音的空闲状态，这里蕴含着大量的冗余信息，所以去掉这些冗余信息将会大幅度的提高语音编码的传输效率，这就需要对静音信号进行压缩；此外，为了满足人们听觉享受，在高带上实现语音编码也将成为未来的研究方向，现如今窄带和宽带的静音压缩技术已经较为成熟，但高带的静音压缩技术尚待发展，这也正是本文研究的必要性。

In this thesis, the system model of DS-SS system and the adaptive filter structure are first introduced . Then, the interference suppression(interferences including strong tone and NBI)using the LMS algorithm with adjudging and feedback is analyzed in detail.

在叙述了DS-SS特性及自适应滤波器结构后，我们采用带判决反馈的LMS自适应算法抑制DS-SS信号中的强单音干扰、窄带干扰，分析了算法的各项性能，并利用计算机进行仿真，讨论了所取参数对算法的影响。

This article mainly expounds principles and methods of computer-aided diagnosis and debugging technology platform for cascaded narrowband filter.

本文阐述了建立级联式窄带通滤波器的计算机辅助诊断和协同调试技术平台的原理和方法。

Mutual couple effect is considered by weighting current of chaffs by the result from MM.

首先分析了单个运动箔条对窄带雷达波的散射特性并得到其回波波形。

This experiment represents a new strategy for SETI, postulating microsecond timescale pulses as opposed to longer pulses or narrowband signals.

本实验展现了 SETI 一个新的策略：为 SETI 假定了微秒尺度的脉冲作为较长脉冲和窄带的对立面。

To be aim at Fitting-Type neural network canceller, design methods and technology projects of the VLSI integrated chips are investigated, which are verified. Moreover, The presented neural network ideas and methods can be directly applied to radar systems and spreed spectrum communication systems, which therefore are of wide application values.

此外，所提出的克服导弹引信存在的有源窄带干扰的神经网络思想和方法可以毫不修改地直接应用于雷达地面站和扩频通信系统中，因而具有一定的推广应用价值。

The XeF laser spectrum is characterized by a continuous broadband spectrum and the absorption lines of atomic Xe can be observed in the spectrum.

选用合适的腔镜组合可实现XeF激光的窄带输出，带宽约为7 nm。

In order to advance the capability of correlation signal detection method, a new method for LFM signal detection,based on the technology for ambiguity resolution of stagger repeated frequency, is proposed. Using the method, the signal in low signal-to-noise ratio can be detected very well and its parameters can be estimated more precisely too.

本文提出基于重频参差解模糊技术的信号参数估计方法，通过相位解模糊，实现了在低信噪比条件下对信号参数更有效地侦取，并对处于白噪声环境下的窄带和超宽带LFM信号进行了仿真，验证其有效性。

D Since this antenna is really a tuned circuit, it also acts as a preselector. It only receives well in a narrow bandwidth of a few hundred kilohertz.

d这个天线具有调谐电路，因此它伴演预调谐器的角色，它对几百千赫的窄带信号接收得很好。

MF/HF radio defective (unable to transmit to coast station/screens freeing).

MF/HF DSC 设备故障（无法向岸台发送信号，窄带直印电报不工作等

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。