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adjustment
相关语句
  平差
    Nonlinear Least Squares Surveying and Mapping Adjustment by Parameters and Spatial Data Error Analying
    非线性最小二乘测量平差与空间数据误差分析
短句来源
    The Principle and Methods of Modern Adjustment of Observation
    近代测量平差方法和原理
短句来源
    THE PROGRAM DM-PG FOR BLOCK ADJUSTMENT BYINDEPENDENT MODELS USING POLYNOMIALPREPROCESSING OF ELEVATION
    用多项式预处理的独立模型法区域网平差程序DM-PG
短句来源
    On the Dynamic Adjustment of Free Levelling Networks
    自由水准网的动态平差
短句来源
    The principle of Adjustment of a Doppler Satellite net and a Preliminary Program
    卫星多普勒网平差原理及初步计算程序
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  “adjustment”译为未确定词的双语例句
    SOME PROBLEMS ONGPS SHORT—ARC ADJUSTMENT
    GPS短弧定位法若干问题的研究
短句来源
    The Influence on Choosing a Functional Model by Stochastic Model Error in Adjustment
    随机模型误差对函数模型选择的影响
短句来源
    Combined Adjustment Model for Gravimetry and Levelling Observations
    重力与水准数据联解模型
短句来源
    Application of Electronic Theodolite Industrial Measuring System in the Large Multi wave Antenna Adjustment
    工业测量系统在多波束天线安装检测中的应用
短句来源
    The Theory of Surveying Adjustment under Contaminated Error Model
    污染误差模型下的测量数据处理理论
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  adjustment
The mechanism of AM fungi in enhancing drought resistance of host plants ascribed to greater osmotic adjustment and greater absorption area of root system by AM colonization.
      
Adjustment approach to boundary effect on aggregation index and its application
      
Results indicated that photosynthetic available radiation, air temperature and relative humidity can affect xylem embolism by daily adjustment of stomatal conductance, transpiration rate and water relations of a tree.
      
A new digital readout system for micromachined gyroscope has been proposed to implement flexible parameter adjustment, improve the control performance of gyroscope, and make error compensation.
      
They were also applied for automatic seam tracking, such as automatic torch transverse alignment and torch height adjustment in welding.
      
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This paper treats of the adjustment by groups of great scale triangulations calculated

本文论述了用矩阵法作大三角网分组平差的问题。作者的目的在于简化平差计算。首先,通过适空地排列法方程组,建立了一个分组平差的方案。此法把三角网按典型图形来进行分组,从而使法方程中主对角线上子矩阵的结构具有一定的规律性。作者用普通累代法同样得到了分组累进式K=b_0+b_1+b_2+…+b_s+…,并进一步得到了它的吉德尔累代法的算式。用公式1/P_F=[ff]+[qφ]来计算平差值函数之权倒数。其次,为了加速分组累进式的收敛性,作者找得了在累代矩阵B存在一小最大特征值λ_1,且|λ_1|<1或二个最大特征植λ_1=-λ_2,且|λ_1|<1时的收敛公式。第三,作者建议用汉森法或加边矩阵法以求逆矩阵A_(11)~(-1),同时还给出了一些用加边法求逆矩阵的计算用表。最后是一个21个法方程的算例。该例子由作者一人计算完成仅化去了16小小时。如果由三人同时进行计算,那末在8小时内是一定可以完成的。用此法进行计算速度是很快的,且计算精度还不受到限制。因而此法极适用于用手摇计算机或快速计算机作大三角网的平差计算。

This paper is proposed for solving the combinative adjustment of the triangulation and traverse network, which is developed for the special topographical conditions, and also for the separative adjustment of the traverse, triangulation or linear chain. The procedure used in the adjustment is the least squares observation equation method by directions, in which the equations relate the observations and their residual errors to the unknown coordinates of the stations. In the adjustment,...

This paper is proposed for solving the combinative adjustment of the triangulation and traverse network, which is developed for the special topographical conditions, and also for the separative adjustment of the traverse, triangulation or linear chain. The procedure used in the adjustment is the least squares observation equation method by directions, in which the equations relate the observations and their residual errors to the unknown coordinates of the stations. In the adjustment, observation equations are established first, then the normal equations are comprised and solved, the unknown coordinates of the stations are obtained, at last, the preeisions of the observations and adjustment elements are evaluated.

本文解决在某些特殊地理条件的地区,采用三角与导线联合布网,产生两者联合平差问题。本程序按间接方向观测平差。以未知点坐标为待定元素,首先列出误差方程式,然后组成和解算法方程式,得未知数的改正数,并进行观测值和平差元素的精度评定。本程序分三部份介绍: 一、间接平差计算过程二、源程序三、使用说明和实例。

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...

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。

 
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