建筑挡光测量

提出了挡光测量这一城市测量的新课题，分析了挡光测量的精度指标，介绍了挡光测量的内容和技术要求。     

基于工作流和元数据驱动的城市工程测量一体化集成应用平台

分析了城市工程测量中亟待解决的两个突出问题,提出了将工作流技术和元数据技术应用到城市工程测量中生产和管理的各个环节中,探讨了城市工程测量一体化集成应用平台的数据模型、体系架构和关键技术,这一应用彻底革新了传统工程测量作业模式,使得工程测量的数据生产效率和自动化管理有了巨大的飞跃。     

地面移动测量技术的发展与现状

地面移动测量技术是当前倍受关注的测量前沿技术。本文论述了地面移动测量技术的基本原理和特点，回顾了该技术的发展历史，总结了国内外研究现状，展望了今后的发展趋势与应用前景，并对研究、发展和应用这一技术提出了建议。     

数字天顶摄影天文定位测量的工程实现

实现天文大地定位测量仪器的自动化观测,特别是消除传统天文大地测量人仪差影响的全自动测量,一直是我国天文大地测量工作者追求的目标。采用当今先进的恒星CCD成像技术、精密倾斜测量技术、计算机技术等研制而成的一种用于地面点精密天文定位的数字式测量设备,很好地解决了这一问题。本文论述了数字天顶摄影天文定位测量的基本原理,提出了数字天顶摄影天文定位测量仪器旋转轴方向天文坐标解算的技术途径。通过天顶摄影定位测量原理样机研制的工程实践,验证了该技术方法的可行性和正确性。     

基于RTK技术的城市工程测量研究

以RTK技术在城市工程测鼍中的应用为研究对象,从RTK技术在城市工程放样测量、地形测量及控制测量三个方面对这一问题进行探讨.     

城建执法中的一枝新秀——徕卡超站仪

一、前言 30年前,测距仪第一次被放置在经纬仪上,从而发明了第一台全站仪.这是一次革命!而如今这种测量技术(角度测量和距离测量)的组合变得很寻常.     

实时GPS测量在公路放样中的应用研究

本文就利用ＧＰＳ－ＲＴＫ（实时动态测量）进行公路中线放样测量这一技术,提出了放样的基本思路及数据处理方法,并对我院的实际开发情况作了详细的介绍。     

空间大地测量的生力军──合成孔径雷达干涉测量

合成孔径雷达干涉测量是新出现的卫星成像技术，可以得出地面位移场完整的密集合成孔径雷达干涉图像，用于地震研究、火山活动监测以及冰川和冰流运动的研究。这一技术的出现，为空间大地测量添加了一支生力军。本文介绍它的原理、测量地面位移的方法以及用于地震研究的实测，并提出了开展这一新技术研究的建议。     

工业与工程摄影测量

（一）概况 原仅为编制地形图的地面摄影测量，因为近景摄影的应用而赋与这古老摄影方法以新的活力。随着电子计算机的发展和普及，又为这一新兴技术的发展提供了可能，尤其是解析法近景摄影测量发展更快。“近景”涉及的内容也大大超出传统测量范畴；     

绿道网竣工测量的必要性及其技术要求

绿道在中国国内是新生事物,广东在这一新生事物的建设方面走在了全国前列。本文论述了绿道网竣工测量的必要性,同时结合珠三角绿道网建设现状,提出了绿道网竣工测量的技术要求和几点建议。     

地心非旋转坐标系中伪距与激光测距法时间比对计算模型

分析了伪距与激光测距法时间比对的基本原理,分别从数学和几何角度详细推导了地心非旋转坐标系中伪距与激光测距法时间比对的基本计算模型,这对于实现星地之间高精度的时间同步具有重要意义.     

THE ORDNANCE SURVEY AND THE FINAL REPORT OF THE DEPARTMENTAL COMMITTEE OF 1935

Abstract

The conclusions of this Committee have aroused small interest so far, because war was upon us almost as soon as the publication (1938). They may, however, greatly affect our surveys and maps of the future, and it is time to examine them. First of all, however, it is desirable to see the background against which the Committee's recommendations appear. For that reason the following chronological summary is given. It is divided into three periods, those of Growth, of Hesitation and of War, and it is given to supplement the chronology of the Final Report in matters which are discussed therein.     

计算机真实感图形技术在数码城市可视化中的应用

目前，数码城市的建设正逐渐成为我国信息产业的热点，如何真实，生动，实时地表现城市面貌，是数码城市建设要达到的关键目标之一。本文对计算机真实感图形技术在数码城市可视化建设中的应用进行了初步探讨。     

利用气象卫星资料分析长江口通海航道泥沙分布

利用气象卫星的时间、空间上的优势,在总结长江河口河槽演变基本模式的基础上,结合卫星图像的分析,确定和研究长江口泥沙地区悬移质的输移路线和活动范围,探讨分析了长江口悬浮泥沙浓度分布动态,分析了滩槽泥沙交换对航道淤积的影响,为长江口深水航道整治方案的确定提供了科学依据。     

THE WASHINGTON (1939) CONFERENCE OF THE UNION OF GEODESY AND GEOPHYSICS

Abstract

For the first time in the Western Hemisphere the Union met in conference in Washington between the dates 4th and 15th September 1939. Though rumours of indefinite postponement were current in the Press, there was never any intention that the Conference should not be held according to plan, which action was supported throughout by the State Department, without whose effective co-operation the event could not have succeeded. The fears of world-wide cataclysm, too soon turned into grim reality, no doubt influenced the attendance of European delegates; but the influx of representatives of the United States and Canada was correspondingly greater, and contributed to the success of the assemblies. In a sense the Conference gained by the reduction of members, for more time was available for the cultivation of former acquaintanceships; moreover, in the fraternizing of the European delegates with American scientists an opportunity was given to reveal the individuality behind well-known names, which helps so much towards mutual understanding.     

DEVIATION OF THE VERTICAL

Abstract

This paper endeavours to put forward good reasons, practical as well as academic, for needing a knowledge of the deviation of the vertical in all countries, and it then describes the instruments and methods used by the writer in his first season on the observation of a geoidal section through Great Britain. Unfortunately there has been no time as yet for the computation of the latter, so this cannot be a full report on it.     

THE EVOLUTION OF THE DIVIDING ENGINE

Abstract

In an earlier article the steps by which the art of original circular dividing developed were traced from the time of Abraham Sharp (1651–1742), when an accuracy of ten to twelve seconds of arc had become possible, to that of Edward Troughton (1753–1835), when an arc of considerable radius could be hand divided to an accuracy of perhaps two seconds.     

ON THE ELIMINATION OF THE ERRORS OF PAIRING AZIMUTH OBSERVATIONS

Abstract

The perfect pairing of east and west observations for azimuth, put briefly, should consist of combinations of simultaneous observations of stars of the same altitude and of the same declination. Needless to say, this is a counsel of perfection, and in practice the surveyor has usually to rely on some sort of an approximation to this ideal. It is only on very rare occasions that the necessary time is available and the atmospheric conditions favourable enough to obtain this perfect harmony of observations. Assuming that the latitude of the azimuth station and the atmospheric refraction are accurately known, the necessity of pairing would not arise, and the grouping of the observations into two sets of east and west stars with a varying discrepancy between the members of the individual pairs would be quite unnecessary. In general one might say, when an azimuth observation is taken, neither the latitude nor the atmospheric refraction is known accurately, and the question arises as to whether there is any simple method of eliminating or reducing these two causes of error.     

THE LAY-OUT OF THE EAST AFRICAN ARC

Abstract

The only essential difference between geodetic triangulation and any other of the fifteen “orders” of triangulation—which were once proposed, and happily rejected, at an International Conference—is that steps are taken to secure the high degree of accuracy necessary over the large areas to be covered. Some of the steps taken to secure increased accuracy may well be used to insure economy in secondary work, as for instance the use of fewer readings of a large instrument, or the use of luminous signals in conditions of poor visibility; while any surveyor may at any time have to connect his work to a geodetic triangulation, using much the same methods.     

THE TRANSVERSE MERCATOR PROJECTION OF THE SPHEROID

Abstract

In January 1940, in a paper entitled “The Transverse Mercator Projection: A Critical Examination” (E.S.R., v, 35, 285), the late Captain G. T. McCaw obtained expressions for the co-ordinates of a point on the Transverse Mercator projection of the spheroid which appeared to cast suspicion on the results originally derived by Gauss. McCaw considered, in fact, that his expressions gave the true measures of the co-ordinates, and that the Gauss method contained some invalidity. He requested readers to report any flaw that might be discovered in his work, but apparently no such flaw had been detected at the time of his death. It can be shown, however, that the invalidities are in McCaw's methods, and there seems no reason for doubting the results derived by the Gauss method.