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precision
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  精度
    Some Key Issues Relating to High Precision GPS Positioning and Crustal Deformation Analysis
    高精度GPS定位及地壳形变分析若干问题的研究
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    Study on Quality Control of Precision GPS Measurement Based on Wavelet Analysis
    基于小波分析的高精度GPS测量质量控制研究
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    REVIEW OF HIGH PRECISION TRAVERSES
    高精度导线述评
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    PRECISION ESTIMATION OF THE VENEDIKOV HARMONIC ANALYSIS
    维尼迪可夫调和分析方法的精度估算
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    On the Accuracy Calculation and Analysis of High Precision Traverse
    特级导线的精度计算和分析
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  精度的
    SOME MEASURES FOR INCREASING THE STABILITYAND PRECISION OF SOLID STATE MICROWAVEDISTANCEMETER
    提高全固态微波测距仪稳定性与精度的几点措施
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    Primary Evaluation of a Array CCD Camera Geometrical Precision
    面阵CCD摄像机几何精度的初步评定
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    Precision Lnvestigation for Ocean Bottom Control Network Using GPS
    GPS联测海底控制网精度的研究
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    A NEW FORMULA FOR CALCULATION RELATIVE POINT POSITION PRECISION OF HORIZONTAL CONTROL NETWORK
    计算平面控制网相对点位精度的新公式
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    Influence of Datum Points on Precision of GPS Engineering Network and the Method of Their Reliability Testing
    基准点对GPS工程网精度的影响及其可靠性检验方法
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  “precision”译为未确定词的双语例句
    Study on the Technology of Field Information Acquisition and Process in Precision Agriculture Based on GPS、GIS and Virtual Instrument
    基于GPS、GIS及虚拟仪器的精细农业信息采集与处理技术的研究
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    Application of GPS in Precision Agriculture
    GPS在精细农业中应用的研究
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    3S" Application in Agriculture and Precision Farming
    “3S”技术的农业应用与精细农业工程
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    Data processing and preliminary deformation analysis of high precision GPS tectonic subsidence monitoring
    GPS构造沉降监测数据处理及变形分析
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    The Study with High Precision and High Resolution of Spatial Variation of Slope at Small Loess Watershed with the Erosion of Rainfall
    在降雨侵蚀中黄土地面坡度变化的高分辨研究
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  precision
Glutathione was representatively selected to test the precision of this method.
      
The limits of detection (S/N = 3) ranged from 0.70 to 1.18 mg L-1, the recoveries ranged from 87% to 102% and the precision expressed as % RSD intra-day and inter-day varied from 0.9 to 3.9 and 1.2 to 5.6, respectively.
      
Numerical experiments demonstrate its effectiveness, easy implementation and high precision.
      
Furthermore, all the states approach the equilibrium in arbitrary precision by choosing some design constants appropriately.
      
Experimental results show a closed test precision of 98.64 % and an open test precision of 95.01 %.
      
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The transformation of old coordinates to new ones is a common problem in city surveying. To solve this problem, it is necessary not only to consider the relationship caused by the difference of the method of projection, by that of the elements of ellipsoids and by that of the original data between the new and the old coordinates, but also to consider the observation errors caused by the two measurements. To ensure the precision of the mathematical relationship, the present paper has adopted the least squares...

The transformation of old coordinates to new ones is a common problem in city surveying. To solve this problem, it is necessary not only to consider the relationship caused by the difference of the method of projection, by that of the elements of ellipsoids and by that of the original data between the new and the old coordinates, but also to consider the observation errors caused by the two measurements. To ensure the precision of the mathematical relationship, the present paper has adopted the least squares method. A computer program is provided. Its characteristics is its simplicity in calculation and high precision in transformation. This program can be applied to various projections and different elements of ellipsoids.

城市测量中新旧坐标变换是一个普遍存在的问题。解决这一问题必须考虑两种坐标间投影方法、椭圆体元素、起算数据等不同所引起的数学关系,而且还必须考虑到两次测量所引起的测量误差。本文所提出的数学模型确保以上所述数学关系准确,在此条件下,采用最小二乘法,使得由于地图投影等因素和测量误差所引起的新、旧坐标间的差异,一次加以处理。其特点是计算简便,换算精度高,可适用于各种投影和各种椭圆体元素。

This paper presents a "Bundle adjustment" method of adjusting analytical aerotriangulation. We proceed in three stages in our work: 1. adjustment with image pairs as units; 2. adjustment with strip as units; 3. adjustment for the whole net. Such a treatment can successfully avoid the problem of the divergence. We adopt in the step of secondary adjustment the method of elimination to eliminate the unknowns of coordinates of ground points at first in order to reduce the storage cell of the matrix of coefficients....

This paper presents a "Bundle adjustment" method of adjusting analytical aerotriangulation. We proceed in three stages in our work: 1. adjustment with image pairs as units; 2. adjustment with strip as units; 3. adjustment for the whole net. Such a treatment can successfully avoid the problem of the divergence. We adopt in the step of secondary adjustment the method of elimination to eliminate the unknowns of coordinates of ground points at first in order to reduce the storage cell of the matrix of coefficients. In the stage of final adjustment, we adopt the conjugate gradient method to solve the system of equations. In order to enhance the accuracy of adjustment of elevation, we use the unequal weighted adjustment. We can obtain the corrections of the coordinates of each image point directly from the results of each stages previously described. It can be regarded as wrong observation whenever exaggerate corrections occur and these observations should be cancelled. Finally, we also design the function of analogical calculation to research the thoretical precision of the method and the rule of propagation of the accumulation of errors.

航测区域网《光束法》平差最终是以航测区域为整体按最小二乘法原理进行平差的。整个计算由小平差、中平差及大平差二阶段组成。在小、中平差阶段由于先消去地标未知数,从而大大压缩了存贮单元并加快了计算速度。大平差用共轭斜量法解算方程组。为了提高平差精度采用不等权平差。利用平差求得的象点观测值的改正数,作为自动剔错的依据。最后,为了研究《光束法》的理论精度及航测网中误差积累规律,程序中还设计了模拟计算的功能。

In this paper the accuracy of the precision engineering control networks (Trilateration and Triangulation), established by using modern electronic distance measuring instruments and theodolites is discussed, and the method of optimization design is proposed that is based on the theory of probability and error propagation and applying the error ellipses to analyze the position accuracy of the points. The advised method of adjustment calculation and accuracy evaluation is accomplished by the special computer...

In this paper the accuracy of the precision engineering control networks (Trilateration and Triangulation), established by using modern electronic distance measuring instruments and theodolites is discussed, and the method of optimization design is proposed that is based on the theory of probability and error propagation and applying the error ellipses to analyze the position accuracy of the points. The advised method of adjustment calculation and accuracy evaluation is accomplished by the special computer programs.The introduced theory and method are especially suited for designing the horizontal control network of construction survey and deformation observation of the precision engineerings.

本文论述用近代光电测距仪及经纬仪建立的精密工程控制网(边角网)的精度,并提出基于概率论与误差传播理论的、用误差椭圆来分析点位精度的优化设计方法。建议的平差计算与精度评定方法以专用的计算机程序来完成。本文所介绍的理论和方法尤其适用于精密工程施工放样和变形观测的平面控制网的设计。

 
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