干扰

On the basis of Kinematic and dynamic analysis of winch system of logging truck, the mathematic model of both winch system and hydraulic system can be built.

本文通过对测井车卷绕系统的运动学和动力学的分析，在此基础上建立了卷绕系统和液压系统的数学模型，对影响系统性能的干扰进行了理论分析，将其等效为随机干扰和阶跃干扰，研究了参数时变，非线性等特点对控制系统性能的影响。

In order to effectively reduce the effects of multi-access interference on the performance of optical code division multiple access communication systems with intensity modulation and direct detection,according to group information, a novel kind of multi-access interference cancellation scheme based on fiber Bragg gratingused with two dimensional address code MPC/OOC is presented.

摘要在强度调制、直接探测的光码分多址通信系统中，为了有效克服并发用户数之间的多址干扰，提高系统的通信性能，根据组信息，针对由光正交码和修正素数码构成的扩时/跳频地址码MPC/OOC，提出一种基于光纤布拉格光栅的多址干扰消除方案，并详细分析了采用这种多址干扰消除方案的光CDMA通信系统的性能。

The wavelet shrinkage method for denoising based on Stein's unbiased risk estimate is provided for signal processing in electrostatic detecting.

在静电探测系统中，获得的信号除目标信号外，还包含各种各样的干扰，包括人工干扰与自然干扰。

The narrowband interference suppression can be realized by tracking the interference subspace and projecting the received signal vector to the orthogonal subspace of it.

文中采用RRLS算法跟踪干扰子空间，并根据干扰子空间最小特征值与噪声功率的比值自动确定干扰子空间的维数。

Because It has stronger ability of resisting narrow band,multipath and jamming interference than that of the conservational communication systems,and also has advantages of concealed information and multiple access secure communication,thus the spread spectrum communication technology draws the people's attention more and more.

由于扩频通信系统与常规的通信系统相比，具有很强的抗窄带干扰，抗多径干扰，抗人为干扰的能力，并具有信息隐蔽、多址保密通信等优点，因而越来越受人们的重视。

Ten healthy subjects and 5 hemiparetic patients were recruited for this baseline-intervention-withdraw study. The intervention of training modes consisted of the variation of the upgrade 12% inclination and two-fold free comfortable speed.

本研究徵召10位正常人及5位中风患者为受试者，采用基准-介入干扰-移除干扰的实验方式，介入干扰分别为改变坡度(坡度12%)及改变速度二种训练模式。

In order to eliminate intercarrier interference of orthogonal frequency-division multiplexing communication systems, based on interference coefficients analysis and reasonable estimation, a novel decorrelation interference cancellation scheme using frequency-domain equalization was proposed.

为消除正交频分复用系统中的载波间干扰，在对干扰系数分析与合理估计的基础上，提出了一种基于频域均衡思想的解相关干扰抑制方案。

To handle co-antenna interference, intersymbol interference and intercarrier interference caused by insufficient cyclic prefix, a MMSE-based Turbo per-tone equalization is presented for MIMO OFDM systems in this paper.

摘要在MIMO OFDM系统中，为了对抗同天线干扰及由于保护间隔不足而引起的码间干扰和载波间干扰，该文给出了一种基于MMSE的Turbo子载波均衡器。

Wavelet packet based multicarrier modulation is a technique combining wavelet analysis theory and multicarrier modulation perfectly. It provides high frequency efficiency, better performance against intersymbol interference, intercarrier interference, tone and impulse interference and can transmit multirate symbols easily.

小波包多载波调制技术是一种新兴的多载波调制技术，是小波分析理论和多载波通信的完美结合，具有频谱利用率高和良好的抗符号间串扰、信道间干扰、脉冲干扰和单频干扰的优良特性，并且易于多速率传输。

A narrowband interference has a greater power spectral density. Thus it will bring more strong devastation to the DSSS system than a broadband one does.So it is difficult for DSSS system to ensure a high quality of communication by itself when strong interference exists, even communication may be intermitted.

窄带干扰(Narrow-Band Interference，NBI)由于其功率谱密度比宽带干扰高得多，所以它对DSSS系统的破坏性更强，当有强窄带干扰存在时仅靠系统自身的抗干扰能力很难保证系统高质量的通信，甚至可能造成系统通信中断。

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。。。。