The method is based on clock circle dived principle. The time errors in direct digital counting method are converted to digital flash-code by latching the output of FPGA delay cells.
FPGA延迟线插入法是在直接计数法的基础上，采用FPGA内部延时单元将时间间隔转化为数字量，经高速锁存器锁存后得到代表延时信息的温度计编码值来实现高分辨率的时间测量。
The paper analyze the various errors of the radar muti-target simulator, and mainly discusses the quantization error caused by the echo time delay quantization of the radar muti-target simulator, the operation error generated by DSP when it stimulates the target echo and the extent and phase error of the I/Q double channels.
本文分析了雷达多目标模拟器的多种误差，重点研究和讨论了雷达多目标模拟器由于回波延时量化引入的量化误差、数字信号处理系统在实现目标回波模拟时的运算误差以及正交双通道内的幅相误差。
Without false paths, the errors of evaluation delay and precharge delay are within 3.62% and 8.26% respectively.
如果不考虑伪路径的影响，求值方向和预充方向延时的最大误差分别为3.62%和8.26%。
But, occupy the author for many times job of agriculture machinery of thorough countryside investigation and study understands, in last few years, a lot of agriculture machinery door because be in production, life, use information, cause the life, production to be immersed in a variety of errors, bear hardships not shallow, difficult character of cause delay in work or business.
但是，据笔者多次深入乡村调查研究农机工作了解到，近几年来，很多农机户由于在生产、生活中对市场信息把握不准或不会分析和运用信息，致使生活、生产陷入种种误区，吃苦不浅，误事难言。
This work also investigates the error source impacted on the laser footprint position. These errors include laser ranging error, trajectory erro, attitude error, kinematic time delay error, the secondary height error cause by slope, scan angle error, integration error etc. This consists of an detailed error analysis. The key problem consists in bringing together all necessary elements for geo-referencing the laser data, where the quality of each contributing part has to be monitored regarding accuracy and systematic effects.
机载激光扫描测高会受到多种误差的影响，包括测距误差，GPS 定位误差，姿态测量误差，动态时延误差，二类高程误差，扫描角误差，安置误差，系统集成综合误差等，这些误差会给激光脚点的坐标带来系统偏差，研究这些误差对激光脚点坐标的影响规律并设法消除或削弱这些误差的影响是获取高质量三维地形数据的前提。
The research instruments included Stroop color-word task, Rey complex figure test, digit span test, trail making test, tower of Hanoi and verbal fluency test. Results; The performances of errors in Stroop 1, time and errors of Stroops 2 and 4; the immediate memory and delay recalling of structure and detail score of HCFT; time of number-letter trail making, shifting time; total time and steps, rule violation of tower of Hanoi improved significantly after OROS methylphenidate treatment as compared with those before treatment.
结果：治疗后，ADHD患儿的Stroop 1试错误数、2和4试的耗时及错误数，Rey复杂图形记忆任务即时记忆和延迟回忆的结构及细节得分，数字字母连线时间和转换用时，汉诺塔的耗时、操作次数、犯规次数的测验成绩均比治疗前有明显改善，且与正常对照组相比差异均无统计学意义。
Based on the principal of inspection, the 20cm and 60 cm reduce-scale models are designed and the model composition are also depicted, with which some relevant instruments are tested. Then the 100cm model is successfully completed on the basis of the reduce-scale models. In order to achieve precision, the time system, photoelectric sensor, servo motor and mechanical apparatus are tested according to the composition of the inspection system. Different precision for inspection system in different plans are figured out according to the results of all the factors: under low velocity condition(lower than 3cm/s), the precision for total station is from 0.4mm to 0.6mm, while the absolute and relative precisions for GPS dynamic surveying are 3mm -10mm and 0.5mm under low and median velocity condition(lower than 6m/s). the experiments and analysis for the dynamic precision of total station and GPS are carried out based on 100cm model, and the results of preliminary dynamic surveying and real-time dynamic surveying are gained through post-processing. Meanwhile, through the correlation analysis for surveying errors, the surveying delay ranges from 110ms to 124ms under different dynamic conditions. After the correction of surveying time-delay and the cooperated-target 360 degree prism, the errors are dramatically reduced: the vertical error and horizontal error are reduced from 1.02mm and 2.18mm to 0.83mm and 0.51mm respectively under the velocity of 0.9cm/s, which proves the effectiveness of error correction.
通过对几种潜在解决方案的分析，确立了最优方案；基于检测平台的基本原理，分别设计实现了20cm、60cm动态检测平台缩尺模型，完成了模型机械结构设计实践及部分相关设备的性能测试，在缩尺模型基础上完成了100cm检测平台的机械结构设计和性能测试；针对检测系统的组成分别对时间系统、光电位置传感器、电机及机械结构的精度进行了分析，根据各组成部分的精度得出系统在不同检测方案条件下的检测精度：低动态条件下(3cm/s以内)对于全站仪跟踪测量能够完成0.4-0.6mm精度的动态检测，中低动态条件下(6m/s以内)对于GPS动态测量能够完成3-10mm精度的动态绝对位置检测和0.5mm精度的相对位置检测；基于100cm检测平台开展了全站仪及GPS动态检测实践，通过事后处理的方法对全站仪在准动态和实时动态条件下的动态测量精度进行了检测，得到不同动态条件下的测量误差；通过相关分析，得到利用全站仪动态跟踪测量的时滞在不同动态条件下约为110-120ms，通过对测量误差进行时滞改正和合作目标360度棱镜的误差改正，取得了良好的效果，其中0.9cm/s条件下的水平位置和高程的平均误差分别从1.02mm、2.18mm下降到0.83mm和0.51mm。
An approach similar to spatial smoothing for array signal processing is adopted to recover full rank of convariance matrix of time delays, and the real domain approach to fasten the operation is also in the consideration. At the same time, an approach to mitigate the first time delay errors for a pair of terminal is also presented, which exploits the probability analysis. Several areas are constructed to distinct the estimations, and put the estimations of couples of samples into the distinct area, choose the area which has most estimations, get the last result through the avaraging. The simulation results show that the proposed approach provids high resolution time of arrival estimations.
本文提出了将TLS-ESPRIT算法应用于到达时间估计，并且在小样本的前提下，利用空间平滑的方法将路径的自相关矩阵恢复成满秩，同时将实值运算应用于谱估计算法，加快了运算速度；同时为了减小首径衰落的影响，本文提出了基于概率分析的首径到达时间估计方法，该方法主要选取了数个样本下的前几个估计值，通过划定一定宽度的区间，选取估计值出现频率最高的区间；将该区间中的各个估计值求平均值后，得到最后的首径到达时间估计，实验表明，该方法能够获得较小的估计误差，提高了估计精度。
A set of integrated compensation programs is designed based on phase errors above mentioned. A digital integral circuit with ADE 7759 is designed for com-pensating the led phase; a phase-shifted software algorithm realized in the merging unit DSP is introduced for compensating the time-delay.
针对这2种原因产生的相位误差设计出了一套完整的补偿方法，由于Rogowski线圈产生的相位超前，设计了一种采用ADE 7759芯片的数字积分电路，可基本还原线圈引起的超前相位；由于传输过程中产生的延时，介绍了一种移相用软件算法，可对延时进行有效补偿。
We analyzed the delay synchronization errors in Pecora and Carroll's chaotic self synchronizing scheme.
对Pecora和Carroll的混沌自同步方案的延迟同步误差进行了研究。
The demands on accuracy of measured apparent zenith distances and the necessity of elimination of systematic errors during the time of determining the astronomical refraction and building the radio wave refractive delay corrective model are described concisely.
简述了测定瞬时大气折射值以及建立电磁波折射延迟改正模型时，对视天顶距测定值的精度要求和消除系统误差的必要性；
Some principal error sources of delay between channels are discussed, including the signal frequency errors, the harmonic distortion of sampling serials, the noise and the spurious distortion, the jitter of the signal periods in sampling serials, the calculation errors of software and some others.
讨论了几个主要的不确定度来源，包括信号源误差、采集序列的谐波失真、噪声及非谐波失真、抖动、软件拟合运算误差等。
In the primary results, We identify Orbital errors, residual topographic errors, atmospheric delay. We then analyse the spatial distribution and frequency characteristics of noise, which provide a basis analysis of assessment methods for the error components.
在初级结果中识别轨道误差、残余地形误差、大气延迟，分析各误差组分信号空间分布的特性，掌握时间上噪声的频率特性，为各误差组分评估方法提供基础分析。
Having outlined the theory and methods of tropospheric atmospheric refraction correction, this paper comment on the Hopfield's models of the tropospheric atmospheric refraction correction and pointed out the errors of these correction (delay) equation and the measures should be adopted.
在概述了对流层大气折射改正的基本理论和方法以后，评述了霍普菲尔德的对流层大气折射改正模式，指出了其湿项时延改正公式中的错误，并给出了正确的公式及其应采取的措施。
One of the most important problems in the data processing of GEO satellite orbit determination (OD) is the validation and control of systematic errors, such as satellite clock error, receiver clock error, time delay of satellite transponder and tracking station equipment bias.
在GEO卫星轨道确定中，系统误差如卫星钟差、测站钟差、卫星转发器时延、地面站设备时延和测站偏差等，已经成为GEO卫星定轨数据处理中的关键问题。
Angular calibration of radar antenna system is composed of the calibration of angular error sensitivities (also called directional sensitivity), adjustment of cross-coupling of azimuth and elevation signals, and the calibrations of system errors such as antenna axial system error, dynamic delay and so on.
雷达系统天线的角度标校包括对系统角误差灵敏度（又称定向灵敏度）的标定、方位俯仰信号交叉耦合的调整以及对天线轴系误差、动态滞后等系统误差的标定。
Time Delay in Real-Time Computer Control of Machining Errors
计算机实时控制加工误差的时滞问题
This if left unchecked will result in increased packet loss, end-to-end delay, transmission errors and faster battery power depletion. This phenomenon generally degrades the overall performance of the network.
若不解决此问题，将会直接导致进一步的丢包，时延，传输错误和更快的能量消耗。这个现象会降低整个网络的性能。
A new method of accuracy correction is presented for improving the measurement accuracy of Δ V be of a bipolar transistor in testing its transient thermal resistance. The method is based on the analysis of errors induced by the case temperature fluctuation and the measurement time delay.
对双极型晶体管ΔVBE瞬态热阻测试法中晶体管壳温波动和测量延迟时间的误差进行了分析，提出了提高测试精度的误差修正方法。
A periodic or continuous check of such channel characteristics as delay distortion, frequency response, and noise in an effort to reduce or eliminate the causes of errors.
周期性地或连续地检验通道的某些性能，如延迟失真、频率响应及噪声等，以便消除或减少引起错误的原因。