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《测量评论》2013,45(10):206-221
Abstract4.3. Having found s we may proceed to obtain the coordinates of the air station. This is the vertex of a pyramid, the base edges being of lengths a, b, c and the opposite edges measuring u, v, w respectively. Let h be the distance of the vertex from the plane of the base, and suppose d, e1 e2, e3 are respectively twice the areas of the base and of the oblique faces in order. 相似文献
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《测量评论》2013,45(13):400-403
AbstractIn text-books on surveying the rangefinder is usually dismissed in one sentence, which merely remarks on its inaccuracies and places in the category of scientific curios an instrument which should be most valuable to the plane-tabler in certain types of country. It is to combat this effect and to help topographers in their arduous work that these notes have been written. They are written from experience gained on topographical survey, on a scale of 1/125,000, in a tropical dependency where reduction of cost is of primary importance. 相似文献
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本文通过对运用GPS测量改算自贡市各等级城市控制网点成果的过程及结果的论述分析,证实了运用GPS测量改算城市控制网点成果具有精度好、效率高等特点。在此基础上探讨其可行性,并提出一些看法。 相似文献
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航测大比例尺数字化测图中的若干问题 总被引:1,自引:1,他引:1
在航测全数字化测图软件还比较昂贵的情况下,立足现有高备,运用测绘新技术,进行大比例尺航测数字化成因,获取数字地图,为城市地理信息系统提供基础信息,对中小城市的测绘工作是一种较好的选择。 相似文献
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文章介绍了德国黑森州测量与地籍测量的发展,现状及趋势。从法律体制、行政管理到生产形式等方面叙述了当今发达国家的测量体系的建立及运转. 相似文献
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本文主要论述了测绘仪器在促进测绘事业发展中的地位与作用,说明加快发展我国测绘仪器的必要性,同时提出了发展我国测绘仪器的建议。 相似文献
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彩红外航片在忻定盆地水浇地清查及盐碱地动态监测中的应用 总被引:2,自引:0,他引:2
本文报导运用航片综合判读法原理,进行一级水浇地。二级水浇地,三级水浇地判读的方法,及其彩红外航片影像标志的研究,并依据1980和1987两年拍摄的航片,以具有代表性的定襄县为。例,分析该盆地七年间盐碱地的消长变化情况。 相似文献
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《测量评论》2013,45(22):477-479
AbstractThe Survey in which the following methods were employed was for a final map on a scale of 1/500,000, with contours at a 500-foot Vertical Interval. In order to make use of any available information shown on existing maps, the scale used in different areas in the field was that of existing maps. These scales were 1,000 roods to 1 inch (1 rood = 12.396 English feet), 840 roods to 1 inch (1/125,000), and 1,680 roods to 1 inch (1/250,000). 相似文献
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V. M. Plyusnin 《地理信息系统科学与遥感》2013,50(2):138-146
A Siberian geographer explores real and potential applications of remote sensing imagery in research on geosystem dynamics. Four different methodological approaches to the analysis of geosystem dynamics are identified and described: comparison of heterochronous and seasonal imagery, geosystem forecasting and reconstruction based on image analysis, determination of current state and extant geosystem trends, analysis of linkages and interactions among geosystem components. Translated by Edward Torrey, Alexandria, VA 22308 from: Geografiya i prirodnyye resursy, 1992, No. 4, pp. 140-146. 相似文献
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D. R. Crone 《The Photogrammetric Record》1973,7(42):699-706
The author outlines his experiences of photographic surveying, in the early years of the 1930's in the Survey of India, which involved the use of simple graphical methods of plotting. 相似文献
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