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时差     
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  time difference
     The interacting multiple model (IMM) algorithm is applied to the TDoA (time difference of arrival) passive location system and a hybrid CV-Singer model which can be used to track maneuvering targets is presented.
     将交互式多模型(IMM)算法应用到具有隐蔽性的无源时差定位系统中,找到了一种适合于无源时差定位系统跟踪机动飞行目标的混合模型即常速度(CV)模型与Singer模型组成的混合CV Singer模型。
短句来源
     Porosity parameters, ratio of acoustic wave time difference K4,ratio of density K5,neutron relative porosity K6;
     ②孔隙测井特征参数(包括声波时差比K4、密度比K5、中子相对孔隙度K6);
短句来源
     Some experimental results are given, the precision of the DMTD(dual mixer time difference) system is 2×10 -13 /s and the precision of the frequency difference-multi period system is 1×10 -13 /s .
     其中 ,双混频时差法测试仪精度可达 2× 10 - 13/s,周期法测试仪精度可达 1×10 - 13/s。
短句来源
     The variety of the Chinese modernization choice and development,time difference and paradox in the process of Chinese modernization in the 20th century,are mainly sources of the conflict between modern and antimodern and the dispute between modern consciousness and antimodern consciousness.
     20世纪中国现代化选择与发展的多样性,以及现代化进程中所呈现出来的时差与悖论,主要源于现代化与反现代化的冲突,现代意识与反现代意识的纠缠。
短句来源
     GPS time difference data Kalman filter
     GPS时差数据卡尔曼滤波器
短句来源
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  equation of time
     Calculation and Adjustment of Construction Network Project with Equation of Time
     用时差法计算调整施工网络计划
短句来源
     Based on the analysis of magnetic daily variation in two magnetic base stations,this paper puts forward a measure method of the equation of time between stations with correlation coefficient and reduces a calculating formula for correlation coefficient.
     通过对两站地磁日变数据的分析,提出了利用相关系数法解算地磁日变观测站间测量时差的方法,导出了地磁日变观测站间观测数据的相关系数计算公式。
短句来源
  slowness
     As shown in the practical applications, the average relative error of high resolution acoustic slowness log predicted is 6.80%, the maximum average relative error is 24.8% at 1.631 km while the minimum average relative error is 0.06% at 1.629 km. Therefore,it has wide application perspective.
     选择了大庆油田某区块8口井作为建模和预测对象,实际应用表明:预测的高分辨率时差曲线的平均相对误差为6.80%,最大相对误差在1.631 km处,为24.80%,最小相对误差在1.629 km处,为0.06%.
短句来源
     To Improve the Accuracy of Calculations for Acoustic Slowness with Interpolation
     用插值法提高声波时差的计算精度
短句来源
     The analysis method for component waves from full waveform array acoustic log data is introduced, and the keys to arrival detection and slowness calculation are discussed in detail.
     李长文,余春昊,王文先,等.阵列声波测井资料的分波处理及应用.测井技术,1997,21(1):1~8介绍了全波形阵列声波测井资料中各组分波的处理分析方法,详细分析了波至检测和时差计算中的难点。
短句来源
     Characteristics of Two Kinds of Long-spaced Sonic Waveform and Methods for Determining Slowness from Waveform
     两种长源距声波波形特征及其时差提取方法
短句来源
     It has been found that linear interpolation is more suitable for 4th root stack, and the relative slowness error could be less than 2/1000;
     研究发现线性插值方法更适用于 4次根式相关 ,时差相对误差可小于 2 / 10 0 0 ;
短句来源
更多       
  time differences
     The Capital Digital Seismic Network,covering Beijing,Tianjin and central Hebei province,has recorded 1186 new earthquakes with M≥1.0 during May 2002 to Dec.2003,in which the arrival time differences between longitudinal wave and transverse wave are 2~25 s.
     首都圈数字地震台网覆盖京、津和河北中部,其中自2002年5月—2003年12新记录1级以上地震1186个,台站记录的纵、横波到时差约2~25 s。
短句来源
     The buried depths of 410km and 660km discontinuities under a station are acquired by the way of adjusting the depths of these two discontinuities in the velocity model until the theoretical arrival time differences of P 410 S and P 660 S with P well conformed to the observed.
     通过调整各台站之下的速度模型中这两个间断面的深度 ,使理论接收函数的P41 0 S、P660 S与P波的到时差与观测值相符 ,最终确定这两个间断面的实际埋藏深度 .
短句来源
     Based on the quarterly data from 1981 to 2002,this paper investigates the credit cycles in China during the economic transition period and examines the interrelations between credit cycles and business cycles by time differences correlation analysis and Granger causality.
     本文基于1981—2002年的季度数据,考察了在经济转轨的不同阶段我国信贷波动的特征,并通过时差相关分析和Granger因果关系检验,分析了信贷波动与经济周期波动的相互关系。 结果表明,总体上信贷波动与经济周期波动基本同步,信贷扩张和收缩是产生经济周期波动的显著影响因素,但这种影响从20世纪90年代中期开始有所下降,同时,信贷波动的内生性开始显现。
短句来源
     Conventional residual static correction method is normally implemen- ted in two steps:1)extraction of time difference from reflection events and 2)application of statics separated from the time differences.
     规剩余静校正方法一般分成两步,首先提取反射波同相轴的时差,然后由此时差分离出静校正量进行静校正。
短句来源
     Maximum and minimum time differences are taken to 21 minutes between two stations.
     而低点时间的长期变幅度化幅度一般 50 min 左右,且长期变化量由西向东有逐渐减小趋势,最大与最小两台时差可达 21 min。
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  time difference
Time difference of arrival (TDOA) is the positioning technique with the most potential in cellular mobile telecommunication systems.
      
The transit time difference of photoelectrons originating from different points of the photocathode does not exceed 1 ns.
      
These are the group velocity dispersion (GVD), the propagation time difference (PTD), and the aberrations of the lens.
      
In dense target and false detection scenario of four time difference of arrival (TDOA) for multi-passive-sensor location system, the global optimal data association algorithm has to be adopted.
      
By using the database, cues relating to sound source localization, including interaural time difference (ITD), interaural level difference (ILD), and spectral features introduced by pinna, are analyzed.
      
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  equation of time
The fundamental geometric equation of time-dependent distortions is derived first in a physically instructive elementary way and afterwards by means of exact differential geometry.
      
In contrast to other publications, here the equation of time integration is modified by a control term which leads to an integral which defined the time element for the perturbed Keplerian motion.
      
  slowness
The efficiency of the sinks, among which the formation of bivacancies seemingly dominates, is not high, which predetermines the slowness of relaxation processes in the solid-phase diffusion zone.
      
The solution to the problem is obtained in the form of a double integral with respect to the ray parameter (slowness) and frequency.
      
The integral with respect to the slowness is transformed to a contour integral in the complex slowness plane and then reduced to the integral over the edges of the cut of the vertical slowness function and the semiresidues at the poles.
      
It is shown that the Stoneley wave is determined by the contributions of two poles in the complex plane of horizontal slowness.
      
One year following admission to school he received an oral vaccine against poliomyelitis and in the months thereafter he developed hyperkinesia, ataxia, and dystonia of limbs associated with extreme mental slowness.
      
更多          
  time differences
Correlation characteristics and travel time differences for hydroacoustic signals under directional reception at different depth
      
Experimental data are presented for the cross-correlation coefficients and travel time differences of audible signals measured at distances of ~60 and ~120 km in an oceanic waveguide.
      
The small fluctuations of the travel time differences (≤0.43 ms for the "water" signals and ≤0.63 ms for the signals reflected from the sea surface) testify to their high stability.
      
The factors responsible for the low correlation coefficients and the relatively high fluctuations of the arrival time differences are discussed.
      
The ability to detect the motion of an auditory target based on dynamic changes in interaural time differences was measured as a function of interaural correlation and acoustic spectrum in a single-interval forced-choice design.
      
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