干扰

Point out the electromagnetism signal produced by human campaign not be noise completely, in which, part has formed useful signal. Analyse through error theory, have gotten the mathematics relation of phase error and apparent resistivity error.

引入CSAMT的理论，对MT勘探中电干扰和磁干扰进行了研究，从理论上证实了磁场的信噪比要优于电场的，指出人类活动所产生的电磁信号并不全部是干扰，其中一部分构成了有用信号。

Because the biggest characteristic of ECG and pulse signals is very weak, vulnerably to external signal interference, such interference, mainly caused by mobile electrode baseline drift (generally less than 1Hz), power-frequency interference (50Hz), EMG Interference.

由于心电信号和脉搏信号最大特点就是信号十分微弱，容易受到外部信号的干扰，这些干扰主要来(来源：7bABC论文网www.abclunwen.com)自电极移动引起基线漂移(一般小于1Hz)，电源工频干扰(50Hz)，肌电干扰。

The communication technology used in GPS is a direct sequence spread spectrum structure. Using C/A Gold codes, it can cope with wideband noise (such as thermal noise and channel noise) or low power narrowband interference by its processing gain. But DS-SS can not reject high power narrowband interference completely. So we need an anti-jamming filter to reject the narrowband interference by using adaptive filters prior to dispreading.

它是利用直接展频的一种架构，因此，此系统能藉由C/A码的展频处理增益，来对付ㄧ些宽频的干扰或是低能量的窄频干扰，但是它无法应付高能量的窄频干扰，因此我们需要一个抗干扰滤波器在解展频之前来先将干扰去除。

It not only includes the "highly resemble" jamming signals generation by adding distance, azimuth, velocity and envelop deceiving information to the original captured radar transmitted pulse, but also includes the "covering" jamming signal generation by an modulation which will get an unmatched processing result in the radar receiver's match filter.

提出&高逼真欺骗干扰&和&掩护式欺骗干扰&的概念，详细阐述了&预警雷达高逼真及掩护式欺骗干扰技术&的原理，具体内容包括对雷达实现距离、方位、速度、幅度起伏等&高逼真&欺骗信息调制，以及利用脉冲压缩失配法产生多目标干扰回波以完成&掩护式&欺骗信息调制。

To extend the SIC technique to turbo-coded systems, an iterative IC with ordered SIC at front-end is proposed. To avoid unnecessary computation, the ordering information obtained from SIC front-end is utilized in a low-complexity stopping criterion with high efficiency. In addition to bit-wise interference cancellation, the SIC technique is also applied to code-block-wise interference cancellation. And, only the bits in incorrect blocks should be preceded to the next outer iteration. As a result, huge amount of computational complexity can be saved, and better performance is achieved.

最后，我们延伸序列式干扰消除的概念至有通道编码的系统，与涡轮码解码同时考虑，首先根据排序资讯，提出一提早停止（early-stopping）准则以减少涡轮码解码时不必要的运算，与其他提早停止准则比较，在几乎相同的检测能力下，此准则具有快速及低计算复杂度的特性，接著提出一包含前述准则之递回式干扰消除法，将序列式干扰消除运用在符码及跨级之码块干扰上，并且只有被检定为错误的编码区块讯号需要再进一级的递回检测，此法不仅在效能表现上更为优越，也节省了大量且不必要的计算量。

Results With respect to the numbers and lower levels of the interferences within the driving source when FIT was powered respectively by the three power sources, the battery output 6 interferences, the highest power of which achieved -78.25 dBm; the linear power source output 6 interferences, the highest power of which achieved -67.11 dBm; the switching power source output 15 interferences, the highest power of which achieved -35.83 dBm.

结果：就3种电源分别供电下的激励源中的干扰的个数和功率水平而言，电池供电下的激励源中存在6个干扰，功率高达－78.25dBm；线性稳压电源供电下的激励源中存在6个干扰，功率高达－67.11dBm；开关稳压电源供电下的激励源中存在15个干扰，功率高达－35.83dBm。

The effect of multiple jammers distributing jamming opposing sidelobe cancellation is analyzed through model building and simulation,which is on the base of the principle of sidelobe cancellation .

在简要分析旁瓣对消原理的基础上，通过建模与仿真对多干扰机分布式干扰对抗雷达旁瓣对消的效果进行了分析，结果表明，多干扰机分布式干扰是对抗旁瓣对消的有效技术途径。

Computer simulation shows that this method has the advantages of high resolution and reliability in LEO satellite beam-space adaptive nulling.

而且在电子战中，干扰的样式也逐渐由单站干扰向多站干扰和智能干扰转变，这就给LEO卫星的抗干扰能力提出了更高的要求。

This system ofcompatible electromagnetism of frequency spectrum has someimportant functions listed as follows:(1) Analysis disturbance of the same or adjacent frequencies (2) Analysis of performance of radio link (3) Analysis of intermodulation (4) Automatic selection of frequency(auxiliary assignment of frequency)(5) Prediction of region of radio field intensity (6) Harmonization of frequency border (7) Analysis and design the system of microwave and satellite earth station.(8) Generate photographs This paper realizes the function of harmonization analysis ofthe system of microwave and satellite earth station. The concretework includes:(1) Based on the propagation model of radio wave,computing the absorption loss of atmosphere of microwavecommunication system and its fading, simulating the receivingvoltage and realizing the computation of disturbance andharmonization between microwave station and earth station.

频谱电磁兼容分析系统主要实现以下几个功能：⑴同、邻频干扰分析⑵无线链路性能分析⑶互调分析⑷频率自动选择⑸场强覆盖预测⑹边界协调⑺微波与卫星地球站系统设计和干扰协调分析⑻图形制作功能本文做为全省建设的电磁兼容分析系统的一部分，实现了微波站与地球站干扰协调分析这一功能，具体有：⑴以无线电波自由空间传播为模型，对微波通信系统的大气吸收损耗和衰落储备量进行了计算、对接收电平进行了模拟仿真，实现了微波- I -吉林大学硕士学位论文 Abstract站与地球站之间的干扰与协调计算。

A capacitance interference model of three-pulse alternating current power supply on signal wire is established.

建立了矿井电器三相交流电对测控信号线的电容性干扰模型，用复数运算法计算了稳态情况下的干扰电压，分析了布线位置对干扰的影响，并将结果推广到尖峰脉冲群下的供电线路，得出的微机测控信号线布线位置与干扰电压的关系对设计测控微机提供了基础。

He knows that he's one of the mostdominant players in the NBA right now.

我知道他现在是联盟里最有统治力的球员之一了。

Using analysis method of BCG , the dissertation analyzed the management of voluntary service organizations .

利用BCG分析方法对我国的志愿服务组织管理进行了分析。