关于光电测距的精度评定问题

本文在论证了往返测距较差△Ｄ的两个性质后，指出了现行规范［１］［２］关于光电测距精度评定存在的问题，并具体给出了△Ｄ的计算方法及光电测距精度评定的严密方法；通过分析，得出了一些有益的结论，并就规范的改进与完善提出了有效的建议。     

本刊对参考文献著录格式的要求

本刊参考文献的著录格式，采用顺序编码制。在文内标注和在文后参考文献表中的著 录项目、顺序、符号等，均按GB 7714-87《文后参考文献著录规则》实施。 　　文内和文后参考文献表按引用文献出现的先后顺序连续编码，并将序号置于方括号中，每条 文献单独排列。著录格式及示例如下： 　　1　专著 ［标引顺序号］　著者.书名［文献类型标识］.其他责任者.出版地:出版者,出版年 ［1］　陈述彭,鲁学军,周成虎.地理信息系统导论［M］.北京:科学出版社,1999 ［2］　Micheal Stonebrake,Dorothy Moore.对象-关系数据库管理系统--下一 个浪潮［M］.杨冬青译.北京:北京大学出版社,1997 　　2　析出文献 　　2.1　专著中析出 ［标引顺序号］　作者.题名［文献类型标识］.见(In):原文献责任者.书名.出版地:出版 者,出版年.在原文献中的位置 ［3］　朱欣焰,龚健雅,庄　严，等.GeoStar的开放式平台［A］.见:李德仁,郑肇葆,边馥苓 ,等编.空间信息学及其应用.武汉:武汉测绘科技大学出版社,1998.205～208 　　2.2　论文集中析出 ［标引顺序号］　作者.题名［析出文献标识］.见:编者.文集名［原文献类型标识］.出 版地:出版者,出版年.在原文献中的位置 ［4］　周忠谟.卫星网点在地面网中的最佳分布［A］.见:中国测绘学会编辑.空间大地测量 学术讨论会论文选编［C］.北京:测绘出版社,1984.5～19 　　2.3　期刊中析出 ［标引顺序号］　作者.题名［文献类型标识］.其他责任者.刊名,年,卷（期）:在原文献中 的位置 ［5］　陈俊勇.永久性潮汐与大地测量基准［J］.测绘学报,2000,29（1）:12～16 　　2.4　报纸中析出 ［标引顺序号］　作者.题名［文献类型标识］.报纸名,年-月-日（版次） ［6］　张　骥.国家大地测量数据库通过验收［N］.中国测绘报,2000-12-08（1） 　　3　专利文献 ［标引顺序号］　专利申请者.专利题名［文献类型标识］.专利国别,专利文献种类,专利号 .出版日期 ［7］　武汉测绘科技大学.用于数字摄影测量的通用接口［P］.中国专利,86206845.2 1987 -10-01 　　4　技术标准 ［标引顺序号］　起草责任者.标准代号: 标准顺序号-发布年.标准名称［文献类型标识］ .出版地:出版者,出版年（起草责任者、出版地、出版者、出版年也可略去） ［8］　国家测绘局西安标准化测绘研究所.GB 7929-87 1：500 1：1000 1：2000 地形 图图式［S］.北京:中国标准出版社,1987 　　5　学位论文 ［标引顺序号］　作者.题名［文献类型标识］.保存地:保存者,年份 ［9］　王培强.面向Agent数据库关键技术的研究［D］.上海:复旦大学,1998 　　6　电子文献 ［标引顺序号］　作者.题名［文献类型标识/载体类型标识］.电子文献的出处或可获得地 址，发表或更新日期/引用日期(任选). ［10］　UCGIS. Distributed Computing ［EB/OL］. http:∥www.ucgis.org,1997-06-1 0/1997-11-04 　　7　文献类型标识 　　析出文献［A］,专著［M］，论文集［C］，期刊［J］，报纸［N］，学位论文［D］，报告 ［R］，标准［S］，专利［P］，光盘图书［M/CD］,网上期刊［J/OL］,网上电子公告［EB/ OL］等。     

Banach空间中二阶微分包含的解

本文给出了弱序列完备Ｂａｎａｃｈ空间中二阶微分包含的解的存在性定理，推广了文献［１］中结果到集值情形。同时，由于利用已有的定理［２］，简化了类似文献［１］中的证明     

梯度方向影像中图形基元的验证

在当代计算机系统中，模型引导的物体识别比无模型引导的物体识别的似乎还要多。所以在特定的场合下，众所周知，用模型引导的验证成为一项重要任务。这些已知物体可以表达为ＣＡＤ模型。为了识别物体，Ｂｈａｎｕ［１９８７］，Ｉｋｅｕｃｈｉ［１９８７］，Ｇｍｕｒ［１９８８］，Ｃｏｙ［１９８９］，Ｈｅｎｄｅｒｓｏｎ［１９９０］曾建议并研究了模型。我们提出一种通过验证它们在方向影像上的图形基元来识别基于ＣＡＤ表示的物     

Banach空间中二阶微分包含的解

本给出了弱序列完备Ｂａｎａｃｈ空间中二阶微分包含的解的存在性定量，推广了献［１］中结果到集值情，同时，由于利用已有的定理，简仑类似献［１］中的证明。     

方差分量非负二次估计可容许性的一个必要条件

本讨论了方差分量线性模型中方差分量线性和Σ↑Ｎ↓ｉ＝１ｃｉσｉ＾２估计量的可容许性，将献［１］、［２］中Ｎ＝１的结果推广到多个情形，得到了一个必要条件。     

方差分量非负二次估计可容许性的一个必要条件

本文讨论了方差分量线性模型中方差分量线性和∑Ｎｉ＝１ｃｉσ２ｉ估计量的可容许性，将文献［１］、［２］中Ｎ＝１的结果推广到多个情形，得到了一个必要条件     

两种曲线测设计算公式的改进

文献［１］、文献［２］分别提出了在路线交点和弦线中点采用极坐标法进行曲线测设的新方法。这两种方法皆具有较好的实用性，但其测设数据的计算公式较为繁琐。本文将给出它们的简便计算公式。一、交点极坐标法计算公式图１为一带有缓和曲线的圆曲线，ｉ点为曲线上任一点...     

GPS快速静态定位技术

ＧＰＳ快速静态定位技术黄劲松，李征航１引言常规的ＧＰＳ静态定位技术通常需进行较长时间的同步观测（例如１～２ｈ）才能确保定位结果的精度和可靠性，即使在测量短基线时也是如此［１］。随着全球定位系统的建成以及ＧＰＳ定位技术的迅速推广和普及，其应用领域已越来...     

一种森林的BDRF模型(英文)

已有的森林反射模型［１－３］已经显示了其用于解释天顶方向观测到的森林遥感数据的能力。随着新的测量多角度反射特征的可能性的出现，大大地增加了在任意观察方向上模拟森林反射率的兴趣。上述模型也具有产生反射率方向分布的能力，但迄今仅有少量的应用。该文论述采用Ｎｉｌｓｏｎ和Ｐｅｔｅｒｓｏｎ［２］模拟模型的反射率方向分布的结果。     

非线性观测值函数的协方差和协因数传播及其权倒数

将非线性观测值函数在其近似值处泰勒级数展开，取至二次项，得到线性－二次项形式。利用线性空间［Ｌ，Ｑ］＾Ｎ的概念和性质，将它表示成［α，β］的向量形式。定义广义协方差算子和广义协因数算子，导出了线性－二次项的非线性观测值函数的广义协方差和广义协因数传播律。在此基础上，给出了非线性平差值函数和未知数函数的权倒数公式。     

等角、等积和等距离投影条件的扩充

等角、等积和等距离投影条件的扩充丁佳波（天津塘沽海军出版社３００４５０）在现有的文献［１］上，等角、等积和等距离投影条件都是用主方向的长度比（或经纬线长度比）的函数关系，即ａ＝ｆ（ｂ）［或ｍ＝ｆ（ｎ）］的形式来表示的。本文的目的是将这些投影条件方程式...     

最新国外测绘文献题录

［1］Zhang Li.对基于ASP的国家地理空间数据交换体系安全性的研究=Research on the Security of National Geospatial Data Clearinghouse based on ASP.Geo-spatial Information Science，2000，3(3)：47～51 ［2］Wu Hong.t-GIS与环境动态模型=t-GIS and Environmental Dynamic Models.Geo-spatial Information Science，2000，3(3)：34～41     

最新国外测绘文献题录

［1］Zhang Li.对基于ASP的国家地理空间数据交换体系安全性的研究=Research on the Security of National Geospatial Data Clearinghouse based on ASP.Geo-spatial Information Science，2000，3(3)：47～51 ［2］Wu Hong.t-GIS与环境动态模型=t-GIS and Environmental Dynamic Models.Geo-spatial Information Science，2000，3(3)：34～41     

重访MAGIC：地籍维护问题的面向目标解法

本文是早先发表于《澳大利亚测量师》上“地籍数据库空间精度最优化、维护和订新”［Ｈｅｓｓｅ等人，１９９０］这一课题新近研究结果。本文旨在对该文的方法提供附加背景信息，并把面向目标软件实现的新心得体会介绍给大家。这种较新软件开发方法的原理是经过检验的，其在地籍模拟以及软件产生方面的优点都作了演示。采用Ｓｍａｌｌｔａｌｋ／Ｖ２８６编程这种软件样品已在墨尔本大学测量和土地信息实现并作了试验。讨论了今后发展     

Enhancing group resolution of TM6 based on multi-variate regression model and semi-variogram function

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对西北太平洋海域表层密度流的初步探索

在文［９］［１０］关于西北太平洋海面动力地形研究的基础上,本文对该海域表层密度流进行了初步探索。特别是用０．５°×０．５°方区多年船测资料,对西部边界流——黑潮进行了专门研究。结果表明,该海域表面密度流模式与主要由风驱动的大洋总的环流模式基本一致。据研究结果,对文［９］给出的海面动力地形和全球海面动力地形的某些特征作出了解释。另外,还就卫星测高在确定大洋环流的局限性和若干概念性问题提出了明确的看法。     

The scheme for the database building and updating of 1∶10 000 digital elevation models

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A GIS-based glacier inventory for the Antarctic Peninsula and the South Shetland Islands —A first case study on King George Island

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Approximate representation of thep-norm distribution

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