共查询到20条相似文献，搜索用时 546 毫秒
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欢迎您对《地图》杂志的内容作出独到的评论,对身边的相关事件发表自己的看法,对刊物的发展提出言之有物的意见与建议,对地理、旅游、生活等各类话题进行广泛积极的探寻, 相似文献
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张秀斌 《测绘与空间地理信息》2015,(7)
首先阐述了中山市对CORS的需求背景,主要对ZSCORS的建设进行了介绍,并对ZSCORS的原理和系统组成及功能进行了说明,最后对ZSCORS的应用特点进行了论述。 相似文献
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针对厦门市房产测量工作,阐述房产预算面积与房屋产权测量面积普遍存在差异情况,提高房产预算成果质量在预算过程应注意问题。通过对员工培训学习,再到对预算项目的资料收集,对预算项目的指标研究,对预算图纸的研究,在预算过程中,对预算项目的功能区划分,对分摊部位的功能认定及面积的分摊,对外墙预留面积,对墙体变化的细节的分析,通过对预算测绘报告自检、互检及质检人员的最终检查和业主的验收等过程以提高测绘产品质量。 相似文献
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<正>高分辨率对地观测系统利用天基、临近空间和航空平台的多种观测手段,实现对陆地、海洋、大气等各类对地观测信息的获取,其数据广泛应用于农业、林业、水利、国土、气象以及国家安全等众多领域。高分辨率对地观测系统重大专项(以下简称高分专项)是《国家中长期科学和技术发展规划纲要(2006—2020年)》中部署的16个重大专项之一,用于发展我国高分对地观测技术,构建我国高分对地观测体系,掌握高分对地观测信息自主 相似文献
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根据傅科第一类回转仪的设想模型，本文用分析力学的方法研究了单自由度陀螺寻北仪的定向原理，分析了陀螺轴的运动规律，建立了多种因素如陀螺力矩，常阻尼力矩和空气阻尼等影响下的运动微分方程，分别求出对应解，并用小扰动理论研究了稳定性。 相似文献
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为了在西部大开发中更好地为四川的经济的发展提供测绘保障,四川省测绘局决定重新编制《四川省地图集》。本文从几个方面探讨了新版《四川省地图集》的编制，主要包括编制背景，如何选择使用现势性资料，出版方式，装帧设计，结构设计，重点探讨了各图组内容表示的设计。 相似文献
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《测量评论》2013,45(18):241-242
AbstractIn working out vertical heights on the Akuse-Kete Krachi chain of triangulation in the Gold Coast a fairly considerable difference was found between values of the coefficient of refraction obtained from observations taken during the day and those taken at night, the mean values being 0.069 for daylight observations to heliographs and 0.087 for night observations to lamps. This difference no doubt is due mainly to the condition of the atmosphere during the day differing from its condition during the night rather than to any effect due to different sources of light. A new chain has recently been observed in Western Ashanti, and the index of refraction for the daylight observations again gave a lower value than that obtained from the night observations, the figures being 0.073 and 0.099 respectively. For the night work three different sources of light were used, hurricane lamps for short lines, Tilley vapour-pressure lamps for lines of intermediate length, and McCaw acetylene signalling lamps by Watts for long lines. It occurred, therefore, to the writer to examine the results to see if the mean values of the index of refraction showed any variations for the different light sources, since it seemed reasonable to suppose that the constitution of the light emitted from each source would be different and hence that the coefficient of refraction might vary. 相似文献
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Ye. V. Fadeyeva 《地理信息系统科学与遥感》2013,50(1):19-23
A method is proposed for the calculation, based on the Goudriaan model, of estimates of various combinations of spectral radiance coefficients Pi which are optimal for interpretation of soil color and moisture, vegetation cover density, above-ground reserves of phytomass, and color and orientation of phytoelements. These estimates correspond rather closely with actual measurements obtained from the field. Translated from: Vestnik Moskovskogo Universiteta, geografiya, 1986, No. 4, pp. 75-79. 相似文献
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Two general approaches for compiling maps of components of the water-ice budget in regions of glacier nourishment are compared and the resulting maps are analyzed. The compilation of raw data is based on field measurements rather than remote sensing information. Translated by Edward Torrey, Alexandria, VA 22308 from: Materialy glyatsiologicheskikh issledovaniy, 1991, No. 72, pp. 94-102. 相似文献
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本文对只在陀螺力矩作用下傅科第一类回转仪的运动规律进行了扰动级数分析，推导了其运动周期公式，并与其线性解进行了比较，同时用动能法分析了该系统的稳定性． 相似文献
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A. Y. Levintanus 《地理信息系统科学与遥感》2013,50(1):83-84
The author describes the contents and participation of former Soviet republics in the compilation of a global atlas of desertification, published under the auspices of the United Nations. Translated by H. L. Haslett, Leamington Spa, UK, from: Izvestiya Akademii Nauk SSSR, seriya geograficheskaya, 1991, No. 6, p. 130. 相似文献