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时延-时间
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  lag-time
     Important criteria for B3G system evaluation were provided by the measurement,analysis and statistic results of several parameters,namely 1) r. m. s excess delay and max excess delay in both indoor and outdoor scenarios,2) the lag-time domain and time-frequency domain channel responses,3) the correlation between different propagation environment in the singular cell,and the antenna correlation.
     通过对室内外信道时延扩展、时延-时间域信道响应、时频域信道响应,以及室外信道传播环境相关性和天线相关性的测量、统计及分析,为后3代系统的评估提供了重要的参数指标.
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  “时延-时间”译为未确定词的双语例句
     According to the echo model of point target and based on the movement analysis of ideal body target,the concepts of range-velocity joint distribution density and time delay-time stretch joint distribution density function are introduced, and the wideband echo model of extended target is derived, meanwhile the physical meaning and relationship between various density function are discussed, and then the representation of wideband echo model by wavelet transform is given.
     在点目标回波模型基础上,通过对理想运动体目标的分析,引入了距离-速度联合分布密度和时延-时间伸缩联合分布密度函数的概念,详细推导了延展目标的宽带回波模型,解释了各密度函数和宽带扩展函数的物理意义及相互关系,最后给出了宽带回波模型的小波变换表示方法.
短句来源
     Time Delay-time Scale Based Wide-band Acoustic Imaging Approach
     基于宽带时延-时间伸缩的目标几何像求解方法研究
短句来源
     Wide-band Acoustic Imaging Approach Based on Matching Pursuit and Radon Transform
     基于匹配追踪和Radon变换的LFM信号宽带时延-时间伸缩声成像方法
短句来源
     A wide-band acoustic imaging approach of underwater target based on time delay-time stretch model is presented.
     提出了一种基于宽带时延-时间伸缩的目标几何像求解方法.
短句来源
     Motion parameters are estimated by analysis of characteristics of multi echoes' time delay-time stretch images. The contorted time delay-time stretch image is transformed into geometry images.
     传统的宽带相关成像得到的目标散射点的时延-时间伸缩分布像相对于目标的几何像是扭曲的,通过对多个相邻回波的时延-时间伸缩分布图的特征提取,得到目标的运动参数,据此将目标的时延-时间伸缩像转化为目标的几何像,便于进行下一步的目标识别和图像增强.
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  相似匹配句对
     Time
     时间
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     Time is...
     时间
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     Gray Predicative Control for Systems With Unknown Time Delay
     延迟时间未知的时延系统灰色预测控制
短句来源
     The determinism of respond time and delay is critical to control networks.
     响应时间时延的确定性对控制网络是至关重要的。
短句来源
     Fuzzy-Gray Predicative Control for Systems with Unknown Time Delay
     延迟时间未知的时延系统Fuzzy-Gray预测控制
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  lag-time
Recovery kinetics had a lag-time and was fitted minimally by three exponential functions.
      
The effectors were shown to accelerate the oxidation of monophenols, decreasing the lag-time of the reaction.
      
L-Arginine was completely released by non-enzymatic hydrolysis from 200 h to 700 h, with a lag-time for the first 200 h.
      
The cellular mechanism seemed to be distinct from that of TNF-α: First, glycerol release in response to long-term insulin was progressive with time and did not display a lag-time characteristic of the effect of TNF-α.
      
Lag-time (Lag), growth rate (Gr), and maximum population density (yEnd) of L.
      
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Shifted general orthogonal polynomials(SGOP) are first used for system identification of continuous-time models, and it is then applied to build the mathematical models of an electro-hydraulic constant pressure pump and a typical eletro-pneumatic position servo system. The unknown parameters and delay time of system models can be obtained at the same time by the method. With the proposed method, the modeling procedure can becarried out only with the simple system responses, such as step input response, and no...

Shifted general orthogonal polynomials(SGOP) are first used for system identification of continuous-time models, and it is then applied to build the mathematical models of an electro-hydraulic constant pressure pump and a typical eletro-pneumatic position servo system. The unknown parameters and delay time of system models can be obtained at the same time by the method. With the proposed method, the modeling procedure can becarried out only with the simple system responses, such as step input response, and no extra exciting signalg for identifcatiion are needed.So the method in this paper is more practical. It is shown in the experimental results that satisfying mathematical models of the practical systems can be gained by the method. It is easily extened to build the models of other practical systems

本文应用移位一般形式正交多项式进行系统辨识,并用于建立电液恒压泵和电气位置伺服系统的数学模型。本文方法可同时求得系统连续时间模型的未知参数和时延时间。整个辨识过程只需利用简单的系统响应信号(如阶跃响应)即可完成,不需附加的辨识激励信号。所以,这种方法具有更强的工程实用性。实践表明,本文所用方法的辨识结果具有令人满意的精度和稳定性,它可方便地推广至其他实际系统的模型辨识。

A wide-band acoustic imaging approach of underwater target based on time delay-time stretch model is presented.Motion parameters are estimated by analysis of characteristics of multi echoes' time delay-time stretch images. The contorted time delay-time stretch image is transformed into geometry images.The result of computer simulation has confirmed that the approach is workable.

提出了一种基于宽带时延-时间伸缩的目标几何像求解方法.传统的宽带相关成像得到的目标散射点的时延-时间伸缩分布像相对于目标的几何像是扭曲的,通过对多个相邻回波的时延-时间伸缩分布图的特征提取,得到目标的运动参数,据此将目标的时延-时间伸缩像转化为目标的几何像,便于进行下一步的目标识别和图像增强.通过计算机仿真验证,表明该方法是有效的.

According to the echo model of point target and based on the movement analysis of ideal body target,the concepts of range-velocity joint distribution density and time delay-time stretch joint distribution density function are introduced, and the wideband echo model of extended target is derived, meanwhile the physical meaning and relationship between various density function are discussed, and then the representation of wideband echo model by wavelet transform is given.

在点目标回波模型基础上,通过对理想运动体目标的分析,引入了距离-速度联合分布密度和时延-时间伸缩联合分布密度函数的概念,详细推导了延展目标的宽带回波模型,解释了各密度函数和宽带扩展函数的物理意义及相互关系,最后给出了宽带回波模型的小波变换表示方法.

 
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