时间差

只有f＞0.7kHz时，通路时间差的影响才逐渐明显。

Only when f > 0.7 kHz , does the effect of interchannel time difference become obvious gradually .

本文在对非饱和土壤水运动方程时间差分格式中引入了水力传导度K（θ）对含水率θ的变化率和压力梯度在空间上的变化率，两个因子。

In this paper two variation rates , K / θ and h2 / Z2 , are introduced in a time difference scheme of the equation of unsaturated soil water flow movement .

脑出血形成血肿后CT等检查即可诊断，但仍存在时间差，对预后不利。

Intracerebral hemorrhage can be diagnosed by CT examination after hematoma formation , but it is unfavorable to prognosis because of the time differences .

本文首先提出一种新的背景减除方案，它运用HSV色彩方案，结合时间差分方法检测运动区域。

A novel background subtraction method using HSV color space and integrating temporal difference is proposed .

到达时间差（TDOA）测向定位研究

ARRIVAL Study on TDOA Direction Finding and Location Measurement

NLOS环境下基于到达时间差（TDOA）的定位算法

The Location Algorithm Based on TDOA under the NLOS Environment

利用VEP测量视觉系统红、绿通道的反应时间差

Measurement of the Temporal Response for R and G pathway by Visual Evoked Potential

该方案采用TDC芯片直接量化微小时间差。

This scheme is based on TDC which can directly detect the time interval .

提出了采用数字式正交检波技术得到I、Q通道的方法，以此来测量相位，获取传感信息，很好地解决了在无线声表面波传感器测量系统中测量时间差精度低的问题。

In order to solve the problem of low accuracy in measuring time difference in SAW based wireless sensor system , a method of digital quadrature demodulation is presented .

提出了一种新的基站选择定位算法，算法基于到达时间差（TDOA）计算距离。

A new location algorithm for BS selection was proposed and this algorithm was based on TDOA measurement .

LTE系统中，无线定位技术包括增强的小区标识定位技术、观测到达时间差定位技术，以及辅助的全球卫星导航系统定位技术。

In LTE system , wireless positioning technology includes enhanced cell-ID positioning , observed time difference of arrival positioning , and assisted-GNSS positioning .

基于SolidWorks软件，设计了基于加速时间差的全驱车辆动力性检测方法的检测装置。

Based on the SolidWorks software , design the detection device for power performance detection method of all-wheel-drive vehicle based on acceleration time difference .

通过分析脉冲的各个多径分量与之后发送的脉冲的时间差的分布，得到了跳时UWB的码间干扰估算公式。

Based on analysis of the probability distribution of the time between the reflections of former pulse and the latter one , an estimated formula of ICI is derived .

平面多站无源时差定位系统模型，按到达时间差（TDOA）定位原理建立。

The model of 2D multi-stations TDOA ( time difference of arrival ) location system is established according to the working principle of TDOA technique .

肺静脉二尖瓣A峰时间差均小于0，DM组高于IGT组和NGT组，三组间比较差异均有统计学意义；

, The disparity in A wave time of pulmonary vein and mitral valve in DM patients was lower than that in NGT and IGT subjects .

理论结果为计算所验证，并表明通常未采取本文对时间差分处理方法的格式尚不具备TVD性质。

Computation experiments verify the theoretical results and show that the traditional scheme without treating time difference as ours does not posses TVD property .

为了提高卫星干扰源测时差定位的性能，提出了四阶累积量时间差（TDOA）估计优化算法。

In order to improve the function of TDOA estimation in satellite jamming emitter location , an optimize estimation algorithm based on fourth-order cumulant is presented .

首先，介绍了无线定位的几种主要经典方法，给出了到达时间差（TDOA）定位系统具体的定位算法和公式。

First of all , several major methods for wireless cellular localization are introduced in this paper . The detailed localization formulae are presented for TDOA system .

主要思想是基于TDOA（到达时间差），考虑NLOS（非视距传播）影响的定位算法。

The main idea is based on a location algorithm of time difference of arrival ( TDOA ) and considering the influence of non-line-of-sight ( NLOS ) .

探讨了一种基于辐射源的信号到达时间差（TDOA）和信号到达方向（DOA）信息，利用固定单站对机动目标进行无源定位与跟踪的新方法。

Discusses a new method to locate and track mobile target by immovable single station , which is based on the information of arrival time difference and arrival direction of emitter signal .

本文根据到达时间差（TDOA）定位原理在通信对抗系统仿真平台下建立了TDOA定位系统模型。

In this paper , the system model of TDOA location has been established on the Communication Countermeasure Simulation Platform based on the working principle of time difference of arrival technique .

从理论上推导出TDOA双曲线牛顿迭代方程，解决了双曲线方程由于测量时间差存在误差造成难以求解的问题。

In addition , the TDOA Newton iteration of hyperbolic equations was derived theoretically , which can solve the problem of hyperbolic equations due to the measurement errors resulted from time differences .

在NVD嵌入式环境下，改善算法前后分形动画的显示效果有比较明显的差别，可以通过实验数据看出，算法改善完之后，显示两幅分形图之间的时间差明显比原来减少了。

Experimental data shows that the time difference compared with the original between two fractal images is reduced obviously after the algorithm is improved .

该方法在获得声源信号后，使用基于声到达时间差TDOA方法计算信号的时间延迟，最后应用Tabu搜索算法搜索最佳声源位置。

After sound source signal was received , the time delay of the signal was calculated by using TDOA method . The best position of the sound source was found using Tabu search algorithm .

同时，本文还在分析和了解了原有时间差检测方法之不足的基础上，设计了同样基于高速AD采集与FPGA的测量信号处理电路，实现了一种可靠的时间差检测算法。

At the same time , after analyzing and understanding of the disadvantage of the former method , a new method of time difference detection is developed in this paper . To realize it , a circuit also based on high speed AD gathering and FPGA is designed .

在蜂窝移动通信系统中，利用基站测量的到达时间差（TDOA）和电波到达角（AOA）的混合定位方法能够比传统的TDOA方法提供更高的定位精度。

In cellular mobile communication systems , the hybrid Time Difference Of Arrival ( TDOA ) and the Angle Of Arrival ( AOA ) location algorithm can reach higher accuracy than traditional TDOA method does .

在非视距传播（NLOS）环境中，到达时间差（TDOA）测量值受NLOS误差的影响而产生偏差[1]，使得Chan算法[2]的定位性能显著下降。

In non-line-of-sight propagation ( NLOS ) environment , the location performance of Chan ′ s algorithm is significantly degraded because the time difference of arrival ( TDOA ) measurement is biased by a NLOS error .

提出一种描述多支承转子系统弯曲振动的数学模型：应用二分法和LU分解法综合计算弯曲自由振动模态，应用Newmark时间差分法和空间五点差分法综合求解弯曲强迫振动动力响应；

The bending vibration equations are established on the multi-supports rotor model system . For calculating mode of free vibration , the dichotomy and LU law are adopted , while the Newmark law and quincunx difference are applied to dynamical response calculations .

CHAN算法是基于到达时间差（TDOA）来定位的，实验硬件设备传回的数据只是TOA信息，TOA信息经过C编程处理之后得至TDOA值。

The CHAN algorithm is based on the time difference of arrival ( TDOA ) to location , the data returned from the experimental hardware is only information of TOA , TOA is calculated by C # Programming for the TDOA values .

在LIF条件液中比心肌条件液中能较早地分离出ICM，时间差分别为11、11、12、10和12h，平均为11.2h；

Isolation of mouse ICM with LIF media was earlier than that with cardiomyocyte media conditioned , and difference between two medias were 11 , 11 , 12 , 10 and 12 h respectively , mean difference was 11.2 h.