多径是扩频测距系统的主要误差源之一。
Multipath is one of the major sources in the Spread-spectrum ranging systems.
本课题研究的是高分辨力超声测距系统。
This thesis is aimed at the research into the high-resolution system of ultrasonic measurement of distances.
提出一种新的外置式激光跟踪测距系统。
A new type of outside laser tracking distance measuring system is developed in this paper.
实验表明，该测距系统具有较高的测量精度。
The measuring precision of ultrasonic distance measure system is indicated higher by this experiment.
实验表明，该测距系统测量精度高，电路简单。
Experiment indicates that the measuring precision of ultrasonic distance measurement system is higher and its circuit is simpler.
两种方法的采用，提高了超声波测距系统的测量精度。
Using these two methods, the precision of the ultrasonic distance measuring system has been improved.
望远镜指向精度是卫星激光测距系统的一项重要指标。
Pointing precision of telescope is one of the important items for satellite laser ranging (SLR).
在此基础上，设计了相应的超声波测距系统电路和软件。
Based on the idea, the circuit and software of ultrasonic distance measurement system have been designed.
介绍了基于激光测距传感器的铁轨测距系统的设计原理。
This thesis recommends the design for principle that the distance measurement system of rail base on distance laser sensor.
研究了一种基于嵌入式系统和超声波测距系统的设计方案。
Studies are made on the embedded systems and ultrasonic distance measurement system.
提出一种可以测量1米以上绝对距离的光纤干涉测距系统。
An optic fiber interferometric system for measuring absolute distance up to 1 meter is presented.
介绍基于图象的激光三角非接触测距系统的工作原理和结构。
Th operating principle and structure of the laser triangulation noncontact measuring system based on image are described.
介绍了该系统原理，给出了测距系统的计算公式及计算结果。
The operating principle of the system is introduced in the paper and the calculating equations for the range finding system are given.
侧音测距系统的最大无模糊距离受到侧音信号最低频率的限制。
The unambiguous distance of tone ranging system is limited by the lowest frequency of tone.
而高精度脉冲激光测距系统往往难以达到低成本和便携的要求。
So, the paper presents the time scale amplifying method to enhance the accuracy of the pulse laser ranging.
本文主要研究开发了一种基于单片机微处理器的超声波测距系统。
This paper primarily investigates a kind of ultrasonic distance measurement device based on microprocessor.
并且在介绍超声测距系统功能的基础上，提出了系统的总体构成。
Moreover, it proposes the whole structure of the system by introducing the function of ultrasonic distance meter.
最后，本文给出了实现该算法的故障测距系统硬件的初步设计方案。
Finally, this thesis presents the initial design scheme of fault location system hardware to implement algorithm.
并说明了超声波测距系统的原理，实现了一种多频超声波测距系统。
This paper describes the principle of ultrasonic telemeter and the implement of a multi-wave ultrasonic telemeter.
分光棱镜是一些测距系统中的关键元件，而分光膜又是关键中的关键。
The dichroic prism is one of the key units often used in some ranging meter systems, and the dichroic film is most critical to it.
针对测距系统发射、接收、检测、显示部分的总体设计方案进行了论证。
And then the transmission receiver, detection, display scheme of this distance meter system is demonstrated.
介绍了一种能用于爬行机器人避障的超声测距系统，通过渡越时间法测距。
An ultrasonic ranging system is designed for creeping robot to avoid obstacle, which measures the distance by time-of-flight.
详细地介绍了一种由PIC 16f876单片机控制的实时超声波测距系统。
An ultrasonic distance measurement system controlled by the MCU of PIC16F876is described.
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.
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.
本文分为三个主要部分：第一部分分析了多径对扩频测距系统接收机码跟踪的影响机理。
It consists of three main parts: in the first part, we analyse the effect of multipath on code-tracking loops of receivers in Spread-Spectrum Ranging Systems.
主动式P S d测距系统是一种无运动机构、结构简单、精度较高的实用型测距系统。
An infrared active Position Sensitive Device (PSD) range finding system is a practical, simple and high accuracy range finding system without moving mechanism.
码跟踪环的设计是伪码测距系统的一个关键环节，其参数的选择对环路跟踪曲线影响很大。
The design of code loop is the key point in the ranging system. And the choice of its parameter greatly affect the trace curve.
本文在第三章通过对测距系统的仿真建模分析，检验了各种情况下该方法的故障测距精度。
The simulation shows that the accuracy of fault location is greatly improved by the new methods presented in this paper, so this method is very effective in fault location.
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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