武汉CHAMP站的建立以及CHAMP任务的应用

介绍了武汉HR／LL站的建立和构成，探讨了CHAMP任务的应用前景，并比较了IGS武汉站和CHAMP武汉站的相关功能。     

信息高速公路、空间数据基础设施与数字地球

本文叙述国家信息基础设施（ＮＩＩ）、国家空间数据基础设施（ＮＳＤＩ）和数字地球的概念与相互关系,通过讨论分析,对如何推动我国信息高科技发展提出了若干有价值的建议。     

ANALYTICAL PHOTOGRAMMETRY APPLIED TO NEPALESE SLOPE MORPHOLOGY

Site procedures and methods of analytical close range photogrammetry are described. The derived data are discussed in relation to the geomorphology of unstable hill slopes in Nepal. Acquisition of low cost multispectral aerial photography for a study of overall slope erosion is also described.     

3S堤防数据库管理系统的建设与应用

本文围绕3S堤防数据库管理系统的建设与应用即GPS应用于遥感数据定向与定位;数字摄影测量工作站上Ikonos遥感影像航测成图;入库数据生产与存储管理,数据库设计,以及在ArcGIS应用平台上通过ArcMap堤防数据库管理系统与ArcSDE空间数据管理引擎和Oracle数据库来存储和管理海量空间数据作一个简要的论述。     

大庆油田岩土工程地理信息系统设计

介绍了大庆油田岩土工程地理信息系统的总体结构和基本功能 ,重点介绍了该系统应用地理信息系统的空间分析技术开发的模拟场区分析模块     

测绘学科发展综述

本文综述了测绘学科的最新进展,给出了传统测绘学的概念和特征,主要论述了测绘学科新技术的发展现状,对全球定位系统、卫星重力测量、遥感、地理信息系统、宽带网络和虚拟现实这几项新技术分别给出其定义、学科特征和最新进展动态。文中最后给出了测绘学的现代概念,阐述了测绘学科正在向地球空间信息科学跨越和融合。     

VEGETATION DYNAMICS OF THE SOUTHERN SLOPE OF THE GREAT CAUCASUS FROM SPACE IMAGERY

The use of multitemporal space imagery in the study of vegetation change in a mountainous section of the Azerbaijan SSR is described. Maps depicting both the character and intensity of change are presented, and methods of their compilation described. Translated from: Geografiya i prirodnyye resursy, 1987, No. 4, pp. 174-176.     

水系元胞自动机的设计与实现

水系元胞自动机模型是应用元胞自动机理论对水系的形成与发展的随机过程进行模拟的模型。本文使用DEM作为基础数据,针对水系元胞自动机模型的建模过程和模型结构,详细阐述了将其抽象为计算机中具体的数据模型,以及使用C#程序设计语言实现该模型对水系进行模拟的具体过程,模拟了南流江流域局部地区的水系发展过程,为元胞自动机与水文学研究的结合提供了参考。     

Pictorial Navigation Displays

Abstract

A pictorial navigation display for aircraft is described, in which the aircraft's ground position and track are continuously displayed, superimposed on the projected image in colour of a topographical map stored on microfilm. The microphotographic technique developed for preparation of the map films is also described. A navigation display of this type will be incorporated in the prototype Concorde supersonic airliner.     

应用数字图像处理技术处理数字高程模型数据和与数字高程模型数据相结合的遥感信息

本文介绍了数字图像处理技术在处理数字高程模型数据和遥感信息与数字高程模型数据相结 合的综合分析方面的应用；说明了实现人工阴影和人工立体观察像对的方法的基本原理及其在处 理数字高程模型数据上的应用；介绍了为提高遥感图像的可解译性,把遥感信息与数字高程模型 相结合,制作遥感图像的人工立体观察像对和立体透视图像的方法技术。     

THE APPLICATION OF TRANSFORMATION FACTORS TO THE ADJUSTMENT OF AIR PHOTOGRAPHS COVERING NARROW LAND AREAS AND COASTLINES

Abstract

1. This new method of adjusting air photographs numerically to a uniform scale on a final map grid has already been described by the writert, where it concerns a large block-adjustment. The method to be described in this paper is the application of the same principle to the adjustment of photographic strips, covering narrow land areas and coastlines.     

图像空间变化序列及其总体状态分析

本文从图像分解与结合的角度,探讨了图像空变化序列问题。     

基于3S集成技术的LD2000系列移动道路测量系统及其应用

介绍基于3S集成技术的LD2000系列移动道路测量系统技术原理、主要科技内容,总结了技术创新点,对移动道路测量获取的可量测实景影像与4D产品集成及应用进行了总结和展望.     

行政界线属性精度的软件自动检查方法

介绍了行政界线属性精度自动检查的必要性,分析了属性精度的质量元素、质量特点和常见错误,探讨了属性精度自动检查的程序实现方法,并介绍该方法在广东省行政界线采集与建库项目中的应用情况.实践证明该方法是有效的,可显著提高检查效率,确保成果质量.     

DIGITAL GROUND MODELS: AN ACCOUNT OF RECENT RESEARCH

The article discusses a general classification system applicable to digital ground models (D.G.M.) as used in highway design. Examples of the various categories are given, together with details of some advantages and disadvantages. The place of the D.G.M. in the highway design system is described in conjunction with traditional methods. The relationship between accuracy, density and economy of D.G.M. systems is examined. Finally an experiment is described which investigates the accuracy of various D.G.M. systems; it is being conducted by the Transport and Road Research Laboratory.     

COMPACT AIR FILM PROCESSORS AND THEIR APPLICATIONS

The essential features of equipment for mobile processing are outlined with reference to the development of small photographic laboratory vehicles for use in the Jield. The resulting air film processor, the Wainco Products Limited 392. is described and details are given of trials carried out to establish its performance for a range of tasks in both reconnaissance and survey. The tests cover the sensitometric and drying behaviour of several air films in current use and include an analysis of the dimensional stability o f j l m in the processor. Applications using direrent containers and eflectiveness in improvised situations are also described and possible future variants of the processor are suggested.     

TERRAIN APPROXIMATION BY FIXED GRID POLYNOMIAL

A method of describing terrain by a fixed grid polynomial is described. The method employs a Chebyshev polynomial with a least squares criterion of fit. The least squares fit is carried out on an iterative basis to a prescribed degree of fit, either of a root mean square residual, or of a standard deviation of the fitted surface, or of a percentage of the total sum of squares of the residuals. The fitting data overlap along the common boundaries of the grids. Interpolation at any new point is carried out patchwise. An application of the method in highway engineering is described.     

常州市连续运行卫星定位服务系统通信技术

介绍了连续运行卫星定位服务系统中各种通信技术的特点,分析了常州市连续运行卫星定位服务系统中采用VPN和GPRS/CDMA通信方式的优点.     

GPS测量在石油地球物理勘探中的应用

简要叙述GPS技术在我国石油地球物理勘探中的应用以及这种方法在具体应用中体现出的优越性和它的发展前景。     

Automated GPS processing for global total electron content data

A software package known as MIT Automated Processing of GPS (MAPGPS) has been developed to automate the processing of GPS data into global total electron density (TEC) maps. The goal of the MAPGPS software is to produce reliable TEC data automatically, although not yet in real time. Observations are used from all available GPS receivers during all geomagnetic conditions where data has been successfully collected. In this paper, the architecture of the MAPGPS software is described. Particular attention is given to the algorithms used to estimate the individual receiver biases. One of the largest sources of error in estimating TEC from GPS data is the determination of these unknown receiver biases. The MAPGPS approach to solving the receiver bias problem uses three different methods: minimum scalloping, least squares, and zero-TEC. These methods are described in detail, along with their relative performance characteristics. A brief comparison of the JPL and MAPGPS receiver biases is presented, and a possible remaining error source in the receiver bias estimation is discussed. Finally, the Madrigal database, which allows Web access to the MAPGPS TEC data and maps, is described.