对实时测频测距的精度进行了分析。
It conducts analysis on the precision of the real time frequency and distance measurement.
简要介绍了脉冲激光测距的工作原理及其光电特性。
The working principle and photoelectricity characteristics of the pulse laser range system are introduced.
给出了用差频延时法测距的距离折射误差计算公式。
A formula of atmospheric refraction error of range measured by difference frequency delay method is presented.
根据理论分析，相关间隔是影响伪码测距的重要因素。
The theory shows that correlator space is an important factor of measure error.
利用该方法，得到了测距公式和测距的距离分辨率公式。
By the above-mentioned new method, the formula of distance measuring and the formula of distance resolving power were formed.
论述了直接序列扩频测距的原理，研究了近距离测距的回波模型。
The principle of direct sequence spread spectrum ranging is introduced and the echo model of near field ranging is discussed.
正确识别和检测线路故障后的行波信号是实现行波故障测距的关键。
Correct identification and detection of fault traveling wave essential to fault location.
对该种脉冲测距的原理进行了阐述，提出脉冲测距的具体实现方案。
The principle of the pulse ranging is presented and an implementation scheme using pulse ranging is raised.
利用单层电离层改正模型就GPS卫星高度角对测距的影响作了探讨。
The single ionospheric layer correction model is used to delete the effects (l) on GPSranging, and the average ionospheric height is generally used in the calculation.
论文论述了摄像机标定技术和计算机视觉测距的基本方法与典型技术。
At the end of this paper, we discuss the basic method and typical technology of the camera demarcation technology and the machine vision range finding.
GPS是全球定位系统的简称，是利用导航卫星进行测时和测距的系统。
GPS is the abbreviation of Global Positioning System, which USES the satellite to navigate and measure location.
介绍了一种双纵模双频激光精密测距的工作原理，信号处理及误差分析。
The paper described principle, signal processing and error analysis of two-longitudinal modes and two frequencies laser's precision ranger finder.
分析测量误差与调制电流大小的关系，进而确定短距离测距的最佳实验条件。
The measurement error is found to decrease with the increase of the modulation current and this relation is applied to finding the optimum experimental condition for the short distance measurement.
本文介绍了超声测距的基本原理，对超声传感器的结构及频率特性进行了分析。
In this article we introduce the basic principle of supersonic measure distance, and analyze the structure and frequency characteristic of supersonic sensor.
接着重点研究了激光测距的原理，激光扫描的现状、原理和设计和对点云的处理。
Then, we emphasize the principle of laser telemeter, the actuality, the principle, the design of laser scanning and the processing to cloud of points.
行波故障测距系统中的行波波速测量的准确性在一定程度上影响了行波测距的精度。
In fault location system based on traveling wave, the measurement accuracy of traveling wave velocity influenced the fault location accuracy to a certain extent.
在本文中，我们设计并研制了用于毫米级精度人卫激光测距的圆扫描时间分析系统。
In this paper, a circular-scan time analyzer to be used in the satellite laser ranging system with ranging accuracy of submillimeter, has been developed.
以测量超声波发射与反射时间差作为测距的基本原理，设计并实现可自动测距系统。
The basic theory in designing and implementing the ultrasonic distance measuring system, is to record the time between the emission wave and the reflected wave by the object.
探索综合利用故障初始电流、电压行波线模分量实现配电线路双端故障测距的新方法。
A new method of fault location for distribution feeders based on the aerial mode component of fault generating current and voltage traveling waves is discussed.
提出了一种新的故障定位的精确算法。它是利用输电线路双端电气量进行故障测距的。
This paper proposes a new fault location algorithm based on the data acquired from both end of the faulted line.
论文主要研究了以下几个方面的问题：超声测距的原理、仪器的电路设计和软件设计。
The main parts of this dissertation are the principle of ultrasonic detection, circuit design of the instrument and design of the software.
本文讨论了AT漏抗、上下行互感、轨地泄漏导纳等因素对AT牵引网故障测距的影响。
The paper discusses the affection of fault location of at traction power network by factors of at leakage, mutual induction between up and down line and rail-ground leakage admittance.
其飞行时间测量系统的设计很大程度上决定了自触发脉冲激光测距的测量精度和测量速度。
The ranging precision and measuring speed are decided by the design of the time-of -flight measurement system to great extent.
论述了在主动调频连续波(FMCW)体制测距引信中实现精确测距的原理及其实现技术。
This paper describes the principle and realizing technique of measuring distance, for measuring distance fuze with the system of frequency modulation continuous wave (FMCW).
该文将节点定位技术分为基于测距的和无需测距的两类，介绍和分析了几种典型的定位技术。
This paper classifies the node localization technologies into two categories: range-based and range-free, then introduces and analyses several typical localization technologies.
气象代表性误差是光电测距的主要误差来源，也是实现精密全站仪标称精度的主要障碍之一。
The meteorological representative error is the main source of EDM error, as well as the main obstruct to realize the nominal accuracy of the precision electronic tachometer also.
在分析三角波调制的线性调频信号的基础上，提出了用DDR技术消除速度对测距的影响方法。
On the bases of analyzing triangle wave form modulated LFM, the method of using DDR (Dual Channel Directional Doppler range) technique to eliminate the influence of speed to range is presented.
论文中讨论了相位激光测距和脉冲激光测距的基本原理，并就两种方法的优缺点做了对比分析。
In this paper, the principles of laser range based on phase and pulse were discussed in this paper, and the advantages and disadvantages were compared and analyzed.
介绍了超声波测距的原理，分析了超声波测距产生误差的原因，设计一种高精度超声测距系统。
Introduces the principle of ultrasonic range measurement, and analyses the main error sources of ultrasonic range measurement, designs an ultrasonic range measurement system with high precision.
介绍了超声波测距的原理，分析了超声波测距产生误差的原因，设计一种高精度超声测距系统。
Introduces the principle of ultrasonic range measurement, and analyses the main error sources of ultrasonic range measurement, designs an ultrasonic range measurement system with high precision.
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