查询词典 separate from

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。

Oceania is a separate landmass, but it is separate d from Asia by very shallow water.

大洋洲是一块单独的陆地，但它与亚洲之间只隔着很浅的水域。

JSP personates an important role in the web techniques, it can separate the express from realization logic through applying the script element and object oriented subassembly.JSP provides a very excellent web frontend separate technique.

JSP在Web技术中扮演着重要的角色，通过使用脚本元件和面向对象的组件把表示从实现逻辑当中分离，JSP提供了一个非常优秀的Web分离前端技术。

The gardeners tied him and led him before Midas, to whom he told wonderful tales of a big continent lying beyond the Ocean's stream --altogether separate from the united mass of Europe, Asia, or Africa--where gigantic, happy, and longlived people lived in splendid cities, enjoying a wonderful law system.

园丁发现了他，把他捆起来领去见弥达斯。他给弥达斯讲述有关大洋河彼岸的、与连成一片的欧罗巴、亚细亚或阿非利加完全脱离的一个大洲的奇妙的故事。大洲上座落着神奇的城市，居住着身材高大、幸福而长寿的人民，拥有值得赞颂的法律制度。

Maybe they keep their button states separate from the mockup in a raw original, making it easier to access them.

可能他们在页面原型之外还另外保存了它们的按钮状态，从而可以方便地修改。

The EU could try to mimic the Federal Trade Commission, one of America's two main competition agencies, which employs independent judges, separate from case teams, to hear "monopolisation" cases.

不过，欧盟可以仿效美国两大反不正当竞争机构之一的联邦贸易委员会（FTC。该机构聘请独立法官，听取垄断案件审理。

Merged devices appear separate from one another in schematics, but they are

合并器件在线路里是以单独的形式出现的，但在版图里是合并在一起的。

A group known as Separatists wished to separate from the Church of England.

另一群人称为分离派的人想从圣公会教会分离出去。

Averroes holds that both the Active and the Passive Intellect are separate from the individual soul and are universal, that is, one in all men.

averroes认为，无论是主动和被动的理智是分开的，从个人的灵魂和具有普遍性，那就是，一个是在所有男性。

The whole point of learning to project is to get your astral body to separate from the physical while fully conscious.

学习投射的关键是，有意识地使你的星体躯体与肉身分离。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。