干扰的
- 与 干扰的 相关的网络例句 [注:此内容来源于网络,仅供参考]
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The adaptive time-varying interference canceler is designed according to the estimated interference instantaneous phase.
5分析了压制式伪码调相干扰的形式及特点,定量研究了伪码调相干扰对伪码调相引信的影响。
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The main job and contribution of this paper are as follows:Based on narrowband signal processing, we propose a new method for FH signal blind detection and blind parameter estimation. Firstly, compute the cross-correlation function of FH signals from multichannels, then we get the cross power spectral density matrixCSDM Secondly, select the hops of FH signals from the CSDM via processing and analyzing the CSDM, meanwhile reduce the influence coming from noise, fixed frequency signal and other interferences; Lastly, estimating the DOA of every hop and according to the DOA, we can separate the hops, get the number of FH signals and their parameters. Propose a new method for designing the threshold in FH signal detection. This method makes it easy to get the threshold by theoretic computing and it can extremely reduce the interference of non-FH signals.Based on broadband signal processing, we propose a new method for FH signal blind detection and blind parameter estimation. Firstly, get the DOA of the signals by wideband spatial spectrum estimation; secondly, separate the signals by spatial filtering using wideband beamformer; Lastly, we propose two methods for FH signal blind detection and blind parameter estimation, one is for several constant hop-rate FH signals whose dwell-time are different and another is for a single FH signal whose hop-rate is alterable.By employing spatial interpolation in broadband signal beamforming, it can reduce the number of antenna elements and corresponding RF modules, A/D converters, etc. It can also eliminate the mutual coupling between antenna elements while getting the narrower main beamwidth and lower sidelobe level.
本文的主要研究工作和贡献如下:●提出了一种基于窄带处理的FH信号盲检测和参数盲估计的实现方法,即首先求出多路信号之间的互相关,进而得到互功率谱密度矩阵,然后通过对CSDM进行对折处理来抑制噪声、定频信号及其他干扰的影响,并将所有属于FH信号的hop(每一跳的驻留时间在时频图上持续的线段)从CSDM中筛选出来,最后用阵列信号处理中的到达方向估计理论在频域中估计出各个hop的方向参数,利用方位信息完成FH信号分离并得到FH信号的数目及其各自的参数集;●提出了一种确定FH信号检测门限的策略,该策略不仅使得检测门限能够通过理论计算得到,而且还显著地抑制了非跳频信号的干扰,从而能有效地检测出FH信号;●提出了一种基于宽带处理的短波FH信号盲检测和参数盲估计的实现方法,即首先利用宽带空间谱测向技术得到接收信号的DOA,然后采用宽带波束形成技术对特定方向进行空间滤波,实现多个信号的分离,最后分别提出了两种FH信号的盲检测和参数盲估计方法,第一种方法适用于空间某个特定方向上存在着几个驻留时间不同的恒跳速FH信号和其他干扰信号的混合信号,第二种方法适用于空间某个特定方向上仅含一个可变跳速的FH信号和噪声的混合信号;●将空间插值的概念和宽带波束形成技术结合起来,提出了一种基于频域处理的宽带恒定束宽的波束形成方法。
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Seven kinds of antijamming methods,such as time correlated choice and field-of-view shrinkage, inertial track,real-time memory criterion,amplitude discrimination, pulse-width discrimination, pulse-amplitude time sequence discrimination and pulse-width amplitude discrimination for Counter-Infrared-Interference-Missile with the cross-shaped detector array are given.
介绍了四元正交探测器以及红外干扰弹的工作原理,对四元正交探测器导引系统抗红外干扰的7种方法(即时间相关选择和视场收缩技术、惯性跟踪机制、实时记忆准则、幅值鉴别法、脉冲宽度鉴别法、脉冲幅值序列鉴别法和脉冲宽度幅值鉴别法)等进行了讨论。
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The effects of disturbances can be offset by reactions to the disturbance .
干扰的影响可以通过对干扰的反作用来弥补。
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In this dissertation, the mechanism of RNAi and basic principle and methods are used to analyze the distributing of reverse complementation sequence correlated with RNAi. It is presumed that a genetic regulation network related with endogenesis RNAi is in existence.
本文根据RNA干扰的基本原理,运用生物信息学的原理和方法,通过计算机编程寻找和RNA干扰相关的反向互补序列,在各种模式生物基因组中找到大量发夹—靶点作用对,并统计了这些序列在各种模式生物基因组中的分布情况,推测存在一个由内源性RNA干扰参与的一个基因调控网络。
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Generally, adaptive regulation can't deˉ scend, so that this bug also causes acute chattering.
但由于自适应律是非减函数,在进入滑模态以后,系统如果再次受到干扰,那么自适应项将在原有基础上增加,而不会随着干扰的消除而递减。
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Understanding of the phenomenon of interference of electromagnetic radiation, and can accurately determine the location of interference sources, the general understanding of the strength of interference is to reduce our DIY premise of electromagnetic interference.
认识电磁辐射干扰的现象,并能准确的判定干扰源的位置,大体了解干扰的强度,是我们进行消减电磁干扰DIY的前提。
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The purpose of this thesis is not only to overcome multipath interference by spread spectrum but also to improve the performance of the system by employing RAKE receiver to recombine some multipath signals.
扩频技术特别是直接扩频技术也是对抗多径干扰的一种非常有效的技术,其中的RAKE接收技术不但能够抑制干扰;而且还能利用多径干扰的能量提高信噪比,极大的改善了系统的性能,并且扩频技术是现在唯一能工作在负信噪比条件下的通信技术,所以扩频技术在水声通信中的应用也越来越受到关注。
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Various parameters were tested and methods to eliminate interferences are presented.
讨论了各种实验参数,考察了干扰因素,提供了消除干扰的方法。
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The ability of resisting outside magnetic field disturbance, electrostatic induction and electromagntic radiation conform to the standard requirements.
成品电缆抗外磁场干扰能力;抗静电感应能力;抗辐射电磁场干扰的能力符合标准要求。
- 推荐网络例句
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I will endeavour to find you some assistance.
我尽力帮你找人帮忙。
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At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.
起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像,后来回台湾,甚至去年在北京,居然也四处看见她的海报,才惊讶她的魅力之大。
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Ah may dee:You are chinese living in a democratic country.
你是居住在民主国家的中国人吧。