窄带

A simplified signal model of digitalized receiver and the signal model of interference, such as tone interference, autoregressive interference and digital interference, are provided. And it is analyzed in detail the capability of DSSS communication systems in suppressing broadband Gaussian interference, single tone interference and partial band interference.

给出简化的接收机信号模型和常用的窄带干扰模型(音调干扰、AR干扰、低速数字干扰等)，分析了DSSS技术对阻塞高斯干扰、单音干扰、部分频带干扰等的抑制性能。

Placing the engine between the pilot and copilot maintains the CG within a narrow band in both horizontal and vertical flight modes, simplifying control and handling.

配售引擎之间的飞行员和副驾驶保持在CG内窄带在横向和纵向的飞行模式，简化了控制和处理。

A long , narrow strip of pliant material such as leather .

带：由韧性材料制成的长的窄带，如皮带

Narrow-band random process is important in Random Signal Analysis.

0引言通信系统中的调制信号是典型的窄带随机过程。

The coupling mechanism, frequency domain characteristics and propagation rule of three propagation paths of partial discharge signal

该方法所采用的测量频段较高，抛弃了以往定位方法中常用的"慢波"，不会受到窄带干扰和低频磁场耦合信号的影响；不存在定位盲区；具有足够的脉冲分辨率；所采用的频带较窄，相应的传感器较易制作。

The spatial nulling is implicitly achieved by estimating a sample covariance matrix and feeding its inverse into the extended Kalman filter. Computer simulations demonstrate robust performance of the algorithm in severe jamming.

针对多元天线接收机，提出了空时自适应信号处理算法，建立基于EKF自适应滤波技术的抗干扰模型，分析表明：在J／S即干扰／信号为60dB时，能较好的抑制窄带和宽带干扰作用。

So the absolute calibration of our CGG-B type sensitometer has been achieved.

遵循国际天文学会照相工作组的建议，我们配置了中心波长为λ4600，6000和8000的窄带干涉滤光片以及辐射计，并改造感光仪，设计正确方案，从而实现了对天文底片感光学实验的绝对校准。

In this paper,we propose a modified SC-SSF(spectral correlation-signal subspace fitting)method to estimate DOA of coherent narrow band or wide-band signals,while the advantage of SC-SSF method still rematins.

提要 本文提出一种修正的SC-SSF方法。该方法适用于宽带和窄带源，不仅可解决循环相关源的问题，而且具有更好的噪声抑制特性。

This character of the photonic crystal containing defect can be used to enhance spontaneous emission of atoms and to make narrow band filter.

光子晶体缺陷的这一性质具有很重要的实际用途，如增强原子的自发辐射、制作极窄带的选频滤波器等。

The behavior, stability and bifurcation of steady state response were studied by means of qualitative analyses.

本文研究了三自由度非线性系统在窄带随机噪声激励下的主共振响应和稳定性问题。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。