p-范分布参数σ的估计     

胡宏昌  孙海燕 《武汉大学学报(信息科学版)》2002,27(5):483-485

用极大似然法估计一元 p_范分布参数σ。在 μ、p已知的条件下 ,得出 ^σp 是σp 的无偏估计及 npλp·^σpσp服从 χp 分布 ,进而给出方差的假设检验方法。  相似文献   

信息熵及其在测量结果不确定度评定中的应用   总被引：1，自引：0，他引：1  

史玉峰  靳奉祥等 《测绘技术装备》2002,4(3):6-7

根据信息理论中信息熵的性质，从理论上导出信息熵可作为测量结果不确定度的评定指标，并分析得出了用信息熵评定测量结果不确定度的数学表示。  相似文献   

地籍测量中全站仪数据处理程序设计     

谢运山 《测绘技术装备》2002,4(3):39-42

主要介绍了在场中市江堤地籍测量中结合各种全站仪的实际情况利用VisualFoxPro数据闸语言编写程序对全站仪原始观测数据和坐标数据进行处理的过程及原理。  相似文献   

电子全站仪的一项新功能——平面抵偿（平面偏心）测量   总被引：1，自引：0，他引：1  

姜晨光  王世周等 《测绘技术装备》2002,4(4):34-36

介绍了电子全站仪的一项新功能－－平面抵偿（平面偏心）测量，阐述了电子全站仪平面抵偿（平面偏心）测量的基本原理。  相似文献   

我国测量数据处理专家欧吉坤研究员     

刘成恕 《测绘工程》2002,11(4):63-64

  相似文献   

Shape Similarity measures of Linear Entities     

ZhangQiaopin  LIDeren 《地球空间信息科学学报》2002,5(2):62-67

The essential of feature matching technology lies in how to measure the similarity of spatial entities.Among all the possible similarity measures,the shape similarity measure is one of the most important measures because it is easy to collect the necessary parameters and it is also well matched with the human intuition.In this paper a new shape similarity measure of linear entities based on the differences of direction change along each line is presented and its effectiveness is illustrated.  相似文献   

Rank-Defect Adjustment Model for Survey-Line Systematic Errors in Marine Survey Net     

LIU  Yanchun  LI  Mingsan 《地球空间信息科学学报》2002,5(4):14-20

In this paper,the structure of systematic and random errors in marine survey net are discussed in detail and the adjustment method for observations of marine survey net is studied,in which the rank-defect haracteristic is discovered first up to now.On the basis of the survey-line systematic error model,the formulae of the rank-defect adjustment model are deduced according to modern adjustment theory.An examle of calculations with really observed data is carried out to demonstrate the efficiency of this adjustment model.Moreover,it is proved that the semi-systematic error correction method used at present in marine gravimetry in China is a special case of the adjustment model presented in this paper.  相似文献   

Possibilities of GPS Kinematic Measurements for Geological Survey in East Slovakia     

Vladimir  Sedlak  Viera  Hurcikova 《地球空间信息科学学报》2002,5(4):21-25

This paper deals with transformation procedures for observed GPS data from the world geodetic system WGS-84 into the national geodetic grid datum S-UTCN(system of united trigonometric cadaster network) and Baa(the Baltic Sea after adjustment).Transformation from WGS-84 into SUTCN is performed most frequently by means of the 7-element Helmert transformation with three identical points.Geodetic network was adjusted by two ways.  相似文献   

数字摄影测量生产的质量控制     

闫筱娟  赵小芸 《三晋测绘》2002,(2):32-35

本结合笔近几年来从事数字摄影测量生产的产品检查工作和具体实践，阐述了基于VirtuoZo和JX4A生产平台的产品质量控制内容和相应的措施，以及就如何提高产品质量谈几点体会。  相似文献   

GPS矿区地表变形三维精密监测技术的研究与实践     

姜晨光盖玉松  王世周李振峰 《三晋测绘》2002,(3):28-29,54

阐述了GPS矿区地表变形三维精密监测技术的基本技术要求、监测方法、监测过程及监测效果。  相似文献