1、 Uuit1 Geomatics Defined（测绘学定义）Where does the word Geomatics come from?（Geomatics测绘或地球空间信息学，这个名词是怎么来的呢？） GEODESY+GEOINFORMATICS=GEOMATICS or GEO- for earth and MATICS for mathematical or GEO- for Geoscience and -MATICS for informatics. （大地测量学地理信息学GEOMATICS 测绘学 或者 geo 代表地 球，matics 代表数学，或者 geo 代表地球科学，
2、matics 代表信息学） It has been said that geomatics is many things to many people.（据说测绘学这个词对不同的人有不同的 理解） The term geomatics emerged first in Canada and as an academic discipline; it has been introduced worldwide in a number of institutes of higher education during the past few years, mostly by renaming wh
3、at was previously called “geodesy” or “surveying”, and by adding a number of computer scienceand/or GIS-oriented courses.（这个术语作为一个学科第一次形成于加拿大；在过去的几年里被全世界的许多高等教育研究机构所熟知，通常是以前的“大地测量学” 或“测量学”在引入了许多计算机科学和 GIS 方向的课程后重新命名的。 ） Now the term includes the traditional surveying definition along with surveying
4、steadily increased importance with the development of new technologies and the growing demand for a variety of spatially related types of information, particularly in measuring and monitoring our environment.（随着新技 术的发展和不断增长的对空间关系的信息类型的需求，尤其是在测量和监测我们的环境方面，现在， 传统测量学定义连同日益增长的测量的重要性一起包含在这个术语里了。 ） Increa
5、singly critical are areas of expanding populations, appreciating land values, dwindling natural resources, and the continuing stressing of the quality of our land, water and air from human activities. （日益增长的危机来自人口扩张，地价上涨，资源紧缩，还有由于人类活动引起的土地、水、空气质量 的持续的压力 As such, geomatics bridges wide arcs from the
6、geosciences through various engineering sciences and computer sciences to spatial planning, land development and the environmental sciences.（这样，测 绘学在地球科学，各种工程学，计算机科学，空间规划，土地开发和环境科学 相互之间架起了广泛的桥梁。 ） Now the word geomatics has been adopted by several international bodies including the International Sta
7、ndards Organization(ISO),so it is here to stay.（现在 geomatics 这个词已经被包括 ISO在内的数个国际机构所采用， 因此它就这样被普遍接受The term “surveyor” is traditionally used to collectively describe those engaged in the above activities. （surveyor 这个词按惯例用来总指（这换成“总称”较好） 那些从事上述 活动的人。 ） More explicit job descriptions such as Land Surve
8、yor, Engineering Surveyor or Hydrographic Surveyor for example, are commonly used by practitioners to more clearly describe and market their specialized expertise. （更清楚的工作描 述就如如土地测量员、工程测量员和水道测量员，一般被从业者用来更准确的描述他们的专门技术。） The term geomatics is a recent creation to convey the true collective and scienti
9、fic nature of these related activities and has the flexibility to allow for the incorporation of future technological developments in these fields.（geomatics 这个术语是个新词，表达了实体集合和它们相关 联的活动的自然科学，并使这些领域的未来技术发展的结合成为可能。 ） Adoption of the term also allows a coherent marketing of the profession to industry an
10、d schools on a worldwide basis. （这个术语的采用同时也在全世界范围里为行业里和学校建立了一个一致的专业市场） As a result, both course and award titles in the traditional Land Surveying sector at many of the world s leading universities are being changed to “Degree in Geomatics”. （结果，世界上许多一流大学的 传统的测量专业的无论是课程还是授予资格都改为 “测绘学位” 的了） This does
11、 not suggest the demise of the term “surveyor” and graduates will still practice as land surveyors or photogammertrists, etc. as appropriate to their specialization.（这并不意味着“surveyor ” 这个词的消亡，测绘毕业生还将从事适合他们专业的土地测量员、 摄影测量员及其他的工作） In the last decade, there has been dramatic development and growth in the
12、 use of hardware and software solutions to both measure and process geo-spatial data.（在过去的十年中，在应用硬件和软件的方法 来测量和处理地球空间数据工作时 有着戏剧性的发展和增长） the use of 在使用 in 时 This has created and will continue to create new areas of application, with associated job opportunities for suitably qualified graduates. （创造并将继
13、续创造新的应用领域，并为合适的、合格的毕业生提供相关的工作。 ） As a result, the role of the “surveyor” is expanding beyond traditional areas of practice, as described above, into new areas of opportunity.（结果是， “surveyor”的角色大大超越传统实践领域如前面所述 的领域，进入到新的的领域。 ） In addition, recent advances in the technology of data collection and proce
14、ssing have blurred the boundaries of practice and activity between what were previously regarded as related but separate areas. （另外，最近的数据采集和处理技术的发展模糊了以前被认为有联系却分离的领域的】界限） Such developments are forecast to continue and will create new career paths for graduates whose education and training is broadly
15、based and of a high academic standard.（可以预见，这 种发展继续并将为涉猎广泛、学识一流的】毕业生创造新 的事业。 ） To enable graduates to take full advantage of these developments, significant changes in education and training are required.（为了使毕业生能充分利用】这些发展，教育和训练的 重大改革成为必需的） Academic and professional institutions are also responding,
16、in part, by adopting the term geomatics both as a course and as an award title. （学院的和专业的机构也作出反应，部分地，采用术语“geomatics” 作为一门课程和一项授予资格） 。 A working definition of geomatics, which reflects current thinking and predicted change, is:（测绘 学的一个现在使用的反映了当前的思想和对未来的预期的定义是： ） The science and technology of acquiring
17、, storing, processing, managing, analyzing and presenting geographically referenced information(geo-spatial data ).（获取、处理、存储，分析和上呈】地理参考信息（地理空间信息）的科学和技术。 ） This broad term applies both to science and technology, and mapping, geodesy, satellite positioning, photogrammetry, remote sensing, geographic i
18、nformation systems(GIS), land management ,computer systems, environmental visualization and computer graphics.（这个广泛的术语应用于科学和技术，以及 制图、大地测量学、卫星定位、摄影测量学、遥感、地理信息系统、土地管理、计算机系统、环境可视化和计算 机制图等领域） Several terms such as “geomatics” , “geomatic engineering,” and “geoinformatics” are now in common use pertainin
19、g to activities generally concerned with geographic information.（现在一些术语 如 “测绘学” ， “测绘工程” “地学信息学” 和 共同应用于某些活动中专属于通常 涉及地理信息的活动。 ） These terms have been adopted primarily to represent the general approach that geographic information is collected, managed, and applied. （这些术语起初被采用用来表示地理信息的采集、管理和应用的总体的 方法
20、。 ） Along with land surveying, photogrammetry, remote sensing, and cartography, GIS is an important component of geomatics. （连同土地测量学，摄影测量学，遥感和制图学一起，GIS 也是测绘学中重要的一个 组成部分。 ）Branches of Geomatics（测绘学分支）Data acquisition techniques include field surveying, global positioning system(GPS), satellite positi
21、oning, and remotely sensed imagery obtained through aerial photography and satellite imagery. （数据获取技术包括普通野外测量，GPS 测量，卫星定位和遥感图像获取，通过航空摄影和卫星成像） It also includes the acquisition of database material scanned from older maps and plans and data collected by related agencies.（它还包括数据库资料的获取通过扫描就有地图和设计图，还有有关机
22、构 收集的数据。 ） Data management and process are handled through the use of computer programs for engineering design, digital photogrammetry, image analysis, relational data base management, and geographic information systems (GIS).（通过计算机程序， 数据管理和处理 应用于工程设计， 数字摄影测量， 图像分析，相关资料库的管理和 GIS。 ） Data plotting(pre
23、sentation) is handled through the use of mapping and other illustrative computer programs; the presentations are displayed on computer screens(where interactive editing can occur) and are output on paper from digital plotting devices.（数据成图是通过制图和其他直观的 计算机程序进行的；其表达显示在计算机屏幕上（交互式编辑处理） ，也可 以通过数字绘图仪输出到纸上。
24、 ） Once the positions and attributes of geographic entities have been digitized and stored in computer memory, they are available for use by a wide variety of users.（一旦地理实体的位置和属性被数字化并 被存储进计算机存储器，就可以有效的为广泛的各种的使用者所用） Through the use of modern information technology(IT), geomatics brings together profe
25、ssionals in the following disciplines: surveying, mapping, remote sensing, land registration, civil and marine engineering, forestry, agriculture, planning and development, geology, geographical sciences, infrastructure management, navigation, environmental and natural resources monitoring, and comp
26、uter science.（通过现代信息技术，测绘学将以下学科的专业人员整合到一起：测量 学、制图学、遥感、国土注册、土木工程和海洋工程，林业，农业，决策与发展，地质学，地 理科学，基础设施管理，导航，环境与自然资源监测和计算机科学。 ）.Other Definitions of Geomatics （测绘学的其他定义）As defined by the Canadian Institute of Geomatics in their quarterly journal “Geomatica”: Geomatics is a field of activities which, using a
27、 systemic approach, integrates all the means used to acquire and manage spatial data required as part of scientific, administrative, legal and technical operationsinvolved in the process of the production and management of spatial information. （加拿大测量学会在他们的季刊“地球空间信息学”中这样定义：测绘 学是利用系统的方法， 为生产和处理 科学的， 行
28、政的， 法律的 和技术的业务所需的空间信息，将所有获取和管理空间信息的方法整合在一起的活动领域。 The definition of Geomatics is evolving. A working definition might be “ the art, science and technologies related to the management of geographically-referenced information.” Geomatics includes a wide range of activities, from the acquisition and ana
29、lysis of site-specific spatial data in engineering and development surveys to the application of GIS and remote sensing technologies in environmental management. It includes cadastral surveying, hydrographic surveying, and ocean mapping, and it plays an important role in land administration and land
30、 use management .（测绘学定义在发展。 现行的一个定义是“涉及工艺、科学和技术的地理信息的处理” 。测绘学或地球空间信息学包括一个广泛的生产 活动从工程学和发展了的测量学领域中特殊点的空间数据的获取和分析 到 GIS 和遥感技术在环境管理中的 应用。它包括地籍测量、水道测量和海图测量，在土地管理和土地使用中扮演重要的角色。 ） Geomatics is the modern scientific term referring to the integrated approach of measurement, analysis, management, storage and
31、display of the descriptions and location of Earthbased data, often termed spatial data. These data come from many sources, including earth orbiting satellites, air and sea-borne sensors and ground based instruments. It is processed and manipulated with state-of-the-art information technology using c
32、omputer software and hardware. It has applications in all disciplines which depend on spatial data, including environmental studies, planning, engineering, navigation, geology and geophysics, oceanography, land development and land ownership and tourism. It is thus fundamental to all the geoscience
33、disciplines which use spatially related data .（测绘学是一个现代科学术语，用以 表示测量、分析、管理，存储和显示基于地球信息，经常被称为空间数据数据 的描述和位置的集成方法。这些数据来自各种数据源，包括地球轨道卫星，空载和舰载传感器及地面仪器。利用 计算机软件和硬件，借助现代信息技术。它的应用覆盖所有依赖空间数据的学科，包括环 境研究，规划，工程学，导航，地质和地球物理学，海洋学，土地开发，土地经营和旅游学。它因而成为所有使 用空间数据地球科学学科的基础。 ） from the School of Geomatic Engineering, Uni
34、v. of New South Wales（摘自新南威尔士大学测绘工程学院）Geomatics is concerned with the measurement, representation, analysis, management, retrieval and display of spatial data concerning both the Earths physical features and the built environment. The principal disciplines embraced by Geomatics include the mapping s
35、ciences, land management, geographic information systems, environmental visualization, geodesy, photogrammetry, remote sensing and surveying. （测绘学是测量、表示，分析，处理，重获和显示关于地球物理特征和环境的空间数据的科学。其包括的主要学 科有制图学，土地管理，GIS，环境可视化，大地测量学，摄影测量学，遥感和测量学。 ） from the Dept. of Geomatics at Univ. of Melbourne（摘自墨尔本大学测绘学系【Geo
36、matics comprises the science, engineering, and art involved in collecting and managing geographically-referenced information. Geographical information plays an important role in activities such as environmental monitoring, management of land and marine resources, and real estate transactions. （测绘学包括
37、自然科学，工程学和工艺或学；对地理信息的收集与管理。地理信息在环境监测，陆地和 海洋资源管理，以及房地产交易中扮演重要角色。 from the Dept. of Geodesy and Geomatics Engineering at UNB（摘自加拿大纽布朗斯 维克大学 测量与大 地测量学系）The science of Geomatics is concerned with the measurement, representation, analysis, management, retrieval and display of spatial information describin
38、g both the Earths physical features and the built environment. Geomatics includes disciplines such as : Surveying, Geodesy, Remote Sensing and representing this information in analog form as a contoured map, paper plan or chart, or as figures in report tables, or in digital form as a three dimension
39、al mathematical model stored in the computer. （测量传统定义为确定地表、地下和地上 的自然与人工地貌特征 ；并使之按比例测绘成 地形图 、平面图或图表，或形成报告图表，或以数字形式 形成三维立体数学模型存储进计算机。 ） As such, the surveyor/geodesist dealt with the physical and mathematical aspect of measurement. （同样的，测量员/大地测量学家处理的就是测量出的物理的和数学的特征） The accurate determination and monu
40、mentation of points on the surface of the Earth is therefore seen as the major task. （因此精确确定并标定地表点位便 成为测量的主要任务） Though these surveys are for various purposes, still the basic operations are the same-they involve measurements and computations or, basically, fieldwork and office work. （虽然测量工作有不同目的，基本的
41、操作却都一样他们包括测量和计算， 或更基本地称之为，外业工作和内业工作） There are many different types of surveys such as land surveys, route surveys, city surveys, construction surveys, hydrographic surveys, etc., but generally speaking, surveying is divided into two major categories: geodetic and plane surveying. （测 量分为许多不同的类型，如土地测
42、量，路线测量，城市测量，建筑测量，水道测量等等，但 是总的来说，测量分为两个主要的种类：大地测量和平面测量） Surveys will either take into account the true shape of the Earth（Geodetic surveys） or treat the earth as a flat surface(Plane surveys). （是考虑地球真实形状的大地 测量还是将地球当成一个平面的平面测量） Additionally, surveys are conducted for the purpose of positioning feature
43、s on the ground(Horizontal surveys), determining the elevation or heights of features(Vertical surveys) or a combination of both.（另外，测量还分为确定平面位 置的水平测量和确定海拔的高程测量或两者的综合。 ） Geodetic Surveying（大地测量）The type of surveying that takes into account the true shape of the earth is called geodetic surveying. （考
44、虑地球真实形状的测量工作称为大地测量） This type of survey is suited for large areas and long lines and is used to find the precise location of basic points needed for establishing control for other surveys. （这种测量适用于大范围和长距离的测量工作，用来确立基本点的精确位置，用 以建立其他测量工作所需的控制网。 ） In geodetic surveys, the stations are normally long dist
45、ances apart, and more precise instruments and surveying methods are required for this type of surveying than for plane surveying.（在大地测量中，站点经常是互相距离很远，那么这种测量就比平面测量 需要更精确的仪器和测量方法。 ） Widely spaced, permanent monuments serve as the basis for computing lengths and distances between relative positions. （广泛
46、间隔开的永久标石就作为计算点位之间距 离的基础） These basic points with permanent monuments are called geodetic control survey points, which support the production of consistent and compatible data for surveying and mapping projects.（这种永久标石点被称为大地控制点，为测量和绘图工作提供可靠 和一致的数据） In the past, ground-based theodolites, tapes, and el
47、ectronic devices were the primary geodetic field measurements used. （过去，大地经纬仪 、卷尺和电子设备是大地测量的野外工作初时的工具。 ） Today, the technological expansion of GPS has made it possible to perform extremely accurate geodetic surveys at a fraction of the cost. （现在， 技术的发展 GPS 使大地测量工作花费非常小的代价就能获得极为 精确的结果成为可能。 ） A thorou
48、gh knowledge of the principles of geodesy is an absolute prerequisite for the proper planning and execution of geodetic surveys.（大地测量工作计划的编制和实施， ，绝对需要对大地测量学知识有全面的掌握。 thorough knowledge of the principles 【A of geodesy is an absolute prerequisite 一个彻底的知识大地测量学的原理的，是 绝对需要的。） 】 In Geodetic Surveys, the s
49、hape of the earth is thought of as a spheroid, although in a technical sense, it is not really a spheroid. （在大地测量中，地球的形状被 看成一个椭球体，虽然在技术角度来看，它不是真正的椭球。 ） Therefore, distances measured on or near the surface of the earth are not along straight lines or planes, but on a curved surface.（因此，在地球表面上或附近测量 距离并不是沿着直线或平面进行，而是在一个曲面上。) Hence, in the computation of distances in geodetic surveys, allowances are made for the earths minor and major diameters from which a spheroid of reference is developed. （因此，在大地测量距离的计算中，参考椭球的长轴与短轴所带来的误差就显示出来。 ） The position of each geodet
