查询词典 one parameter
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A numerical calculation program is written up for the various solution methods in this paper and the program is being used in various aspects of inverse problem of environmental hydraulics, including inverse problem in reverse process of one-dimensional unstable diffusion, inverse problem in reverse process of convection-diffusion, inverse problem for the dispersion coefficient in water quality model, The inverse problem of coefficient identification for nonlinear Boussinesq equation, parameter identification inverse problem for water quality model, the inversion of parameter of BOD-DO water model, the inverse problem of the source of convection-diffusion, identification of the steady-state permeability for two dimensional isotropic medium, two-dimensional steady inverse problem of convection-diffusion and parameter identification inverse problem for two-dimensional parabolic equation, etc.
对本文提出的各种算法,编制了数值计算程序,并把它应用于环境水力学反问题诸多领域,包括污染物一维非恒定扩散逆过程反问题,对流扩散方程逆过程反问题,河流水质纵向弥散系数反问题,非线性Boussinesq方程反问题,河流水质多参数识别反问题,BOD-DO水质模型参数反演问题,对流—扩散方程源项反问题及二维恒定各向同性介质渗透系数反问题,二维定常对流——扩散方程及二维抛物型方程参数控制反问题等。
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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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One atttack to SQL infuse: The SQL parameter that the inquiry parameter in moving easy system to use pair of SQL to inquire a statement undertakes filtering; uses type security changes inquiry way, from go up at all the type of problem;URL parameter that solves SQL infuse, amount, limits limits a function, the problem that solves baleful user to be atttacked through address column ill will, these mediums control SQL infuse, still include other a few filter processing, will prevent SQL infuse attack with the to user data-in test and verify of other.
一对于SQL注入攻击:动易系统采用对SQL查询语句中的查询参数进行过滤;使用类型安全的SQL参数化查询方式,从根本上解决SQL注入的问题;URL参数类型、数量、范围限制功能,解决恶意用户通过地址栏恶意攻击的问题等,这些手段是控制SQL注入的,还包括其它的一些过滤处理,和其它的对用户输入数据的验证来防止SQL注入攻击。
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For drawing the parameter curve by point to point it orde to the parameter t's step length of increased make the progress range of the curve can not large than the length of one pels, otherwise the curve may step over one middle pels and skip one point that it should be on the curve.
要逐点地生成参数曲线,就要求参数t每次增加的步长要使曲线前进的幅度不得超过一个象素长度,否则有可能跨过一个中间象素而产生断点。
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The invention discloses a passive optical network signal monitoring method comprising the following steps: obtaining a PON signal from one side of an optical line terminal and an optical network unit, detecting the photoelectric property parameter of the obtained PON signal and judging whether the detected photoelectric property parameter lower than a predeterminate photoelectric property parameter threshold or not, if it is, a corresponding alarming signal is transmitted to the OLT.
本发明公开了一种无源光网络信号监控方法,包括以下步骤:获取来自光线路终端和光网络单元中一侧的PON信号,检测所获取的PON信号的光电性能参数;和判断所检测出的光电性能参数是否低于预设的光电性能参数阈值,如果是,则发送对应设置的告警信号给所述OLT。
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Parameter estimate lays particular emphasis on individual population parameter of model in the past. Its common purpose aims at seeking one method to optimize parameter in the equation.
以往参数估计研究都侧重于单个种群模型中的参数确定,其共同的目的旨在寻求一种使方程中参数达到最优化的方法。
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One parameter, which is independent of the training algorithm, can however be tweaked rather easily ?
一个参数,它是独立的训练方法,但是经过调整可以比较容易?
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It comprises: CN pages call and the page message carries the sonic service information, as the sonic service of CS region; UE responds page, and sends the sonic service information to RNC in the initial access request message; RNC receives request and makes sure it is sonic service of CS region, to decide one sonic speed parameter Rm, and based on the resource demand, to build one wireless chain and ground load between Iub interface signal and service, and the signal and service load of wireless interface; UE and CN processes QoS consultation, and CN sends the consulted Qos parameter to RNC, which comprises a sonic speed parameter Ra of this service; RNC compares parameter Ra and Rm, if Ra is higher then Rm, builds the ground load of Iu interface and sends distribution answer message to CN to continuously page answer process.
一种WCDMA系统被叫侧语音呼叫的快速建立方法,包括步骤:CN寻呼被叫,寻呼消息中携带语音业务信息,指明是CS域的语音业务;UE响应寻呼,在初始接入请求消息中将所述语音业务信息传递到RNC;RNC收到请求并获知是CS域的语音业务后,决策出一个语音速率参数Rm并基于其对资源的要求,建立Iub接口信令和业务的无线链路及地面承载,以及无线接口的信令和业务承载;UE和CN进行QoS协商,CN将协商得到的Qos参数指派给RNC,其中包括本次业务的语音速率参数Ra;RNC比较参数Ra和Rm,如果Ra≥Rm,则建立Iu接口的地面承载,向CN发送指派应答消息,继续呼叫应答过程。
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In this paper, a tunable bandpass Σ modulator by one parameter only is adopted to optimize modulator performance.
在本论文中,可调式带通三角积分调变器使用一个变数来改变中心频率来使调变器的效能更加完美。
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Most of the time, until now, only one parameter was considered for designing crossover network inductors and that is d.c. winding resistance.
至今大多数的时间,设计分音器电感时唯一考虑到的参数只有线圈的DC电阻。
- 推荐网络例句
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I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""
客人们在卡罗利娜·埃凯家里,举止就文雅一些,因为卡罗利娜的母亲治家很严厉。
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Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.
由著名品牌 Herm è s 设计,这件高贵的制服是香港本土制造,是我们第一套不配帽子的制服。
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Do not 'inflate' your achievements and/or qualifications or skills .
不要 '夸大' 你的业绩或成果,条件或者技能。