矿图符号库的开发和管理探讨

分析了矿图图形的基本特征,将矿图图形要素分为三类,即点状、线状和面状符号。从这三种类型的图例符号特征出发,论述了矿图符号库的建立和调用方法。     

GIS中平面线位误差带的可视化表达

通过综述ＧＩＳ中平面线位误差带的发展历程,根据求解曲线族包络线的原理,建立了描述随机线元位置不确定性的误差带“ｇ－带”边界曲线方程的计算通式,从图形角度详细阐述ｇ－带”的形成,形状确定,并给出不同实例的“ｇ－带”可视化图形,直观地向用户展示了线位整体不确定性的区域范围。     

经纬仪三轴关系状态参数检验模型

本文将经纬仪竖轴、横轴和望远镜视准轴之间相互关系用状态参数ξ、η、ζ和θ来描述，通过在已知点上的水平角和竖直角观测值及已知方位角，由最小二乘法求得状态参数ξ、η、ζ和θ及其精度。实例表明，该法是有效的，并可对观测值进行相应改正。     

Unknown parameter＇s variance-covariance propagation and calculation in generalized nonlinear least squares problem

The unknown parameter‘s variance-covariance propagation and calculation in the generalized nonlinear least squares remain to be studied now, which didn‘t appear in the internal and external referencing documents. The unknown parameter‘s variance-covariance propagation formula, considering the two-power terms, was concluded used to evaluate the accuracy of unknown parameter estimators in the generalized nonlinear least squares problem. It is a new variance-covariance formula and opens up a new way to evaluate the accuracy when processing data which have the multi-source,multi-dimensional, multi-type, multi-time-state, different accuracy and nonlinearity.     

采掘工程平面图自动绘制系统

为了实现煤矿矿山测量的标准和自动化,文讨论了采掘工程平面图自动化绘制系统的设计,并以ＡｕｔｏＣＡＤ为平台开发研制了采掘工程平面图自动制系统,系统经过煤矿的运行使用,取得了显著的经济和社会效益,说明该系统具有很强的实用性,规范性,可靠性,灵活性和易操作性等特点。     

陀螺经纬仪积分定向测量分析

本讨论了积分法的一般原理,并推导了陀螺经纬仪定向积分测量法。采用ＣＣＤ对转子轴的连续运动进行离采样,认为采样密度应大于１２５次。模拟实验表明积分测量适合陀螺经纬仪自动化的发展。     

Unknown parameter’s variance-covariance propagation and calculation in generalized nonlinear least squares problem

Introduction Now suppose there is a nonlinear function L =f( x , y ), (1) where L =(l 1 , l2 , L , lm)T is a group of observing data c ontaining errors; y =( y1 , y 2, L , ym)T is another type of data containing errors and different accuracy. The observing powers of two types data are P1 and P2 respectively. The vector y is the random pa- rameter x =( x1 , x2 , L , xn)Tand is the unknown non-random parameter in the function model. Concur- rently considering the errors of L and y, L =f( x …     

Solution model of nonlinear integral adjustment including different kinds of observing data with different precisions

1　INTRODUCTIONInthedataprocessoftheconstructionofdigitalcityanddigitalnationandthemoderndeformationmonitoring ,manykindsofmeasurementswithdifferentprecisionscontaininggeometricandphysicaldataarecaptured .Thedistribu tiontypesofthesedatacanbedividedintothenormaldistribution ,theLaplace’sdistribution ,thenormalmixeddistribu tionandsoon .Meantimetherelationsbetweentheseobservingdataandtheunknownparametersarenonlinearinmostofthecases .Sofardifferentkindsofobservingdatawithdifferentprecision…     

陀螺经纬仪运动的双尺度分析

本文以扰动理论为基础，认为陀螺经纬仪的运动是时间和最大振幅的函数。实测数据表明，双尺度解能精确地描述陀螺经纬仪的运动。