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着眼于明确机构改革后基础测绘在自然资源管理业务格局中的职责定位、工作重点,以及如何按照新《测绘法》更好地履行"为经济建设、国防建设、社会发展和生态保护服务"的法定要求,分析了"十四五"基础测绘发展的基本形势,据此提出"十四五"规划工作的基本思路和主要遵循,明确了工作重点和相关措施,相关观点已经在"十四五"基础测绘规划编制工作中得到体现。 相似文献
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"奋进"号航天飞机于今年2月11日在佛罗里达州卡纳维拉尔角的肯尼迪太空发射中心升空,载有来自美国、德国、日本的6名宇航员,第二天即展开工作,利用新研制出的三维测绘雷达测绘地球立体地貌.经过11天紧张的工作,于2月21日完成了地球测绘任务."奋进"号这次太空之旅的任务对外声称是地貌测绘,但说穿了,其实就是为了测绘军事价值极高的立体地图.地图绘制完成后,五角大楼的专家们就可以对全球军事与经济目标一览无遗,从而掌握最清晰最详尽的地理信息. 相似文献
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近年来,随着5G通信、大数据、云计算和物联网等新兴技术与测绘地理信息技术的交叉融合,测绘的内涵和外延正不断扩大.测绘地理信息行业也正在打破行业壁垒,促进跨界融合,构筑起空间智能驱动万物互联的新格局,迸发出以数字孪生、智慧城市等为基底的"元宇宙"新概念……在这样的新浪潮下,测绘教育也面临着新挑战.测绘学的理论知识和技术手... 相似文献
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"地籍测绘"教学有关问题的探讨 总被引:2,自引:0,他引:2
郭贵海 《测绘与空间地理信息》2010,33(1):18-19,23
主要介绍了随着现代测绘科技的发展,"地籍测绘"教学内容及其实践性教学环节均应随之作相应的变化,并提出了对地籍测绘专业课教师的基本要求。 相似文献
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近年来,测绘地理信息技术和手段发展迅猛,新技术和新手段的应用使测绘地理信息成果资料的保密工作呈现诸多新特点。从这些新特点出发,阐述了测绘地理信息成果资料档案的属性,论述了测绘地理信息成果资料档案在保管、提供和"售后"等过程中保密工作的特点和方法。 相似文献
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研究型大学非测绘专业"测量学"教学模式研究 总被引:12,自引:2,他引:10
研究型大学以科学研究为其重要功能,以科研与教学融合为主要特征,以产出高水平的科研成果和培养高层次的精英人才为目标。针对研究型大学教学定位确定非测绘专业"测量学"教学定位,结合清华大学非测绘专业"测量学"教学实践,提出研究型大学非测绘专业"测量学"教学讲一、考二、用三的教学模式,简单诠释在教学中基础、应用与拓展的关系,介绍了清华大学在非测绘专业测量学教学中的递进式知识模块设计,以及新技术拓展课程开设,指出研究型大学非测绘专业测量学教学在教学大纲、教学过程、教学方法、考核方式等方面应做的适当调整和注意事项。实践证明,清华大学"测量学"课程在激发学生自主学习兴趣和创造性思维方式,培养学生专业能力、创新能力和协作能力方面取得了好的成效。 相似文献
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《International Journal of Digital Earth》2013,6(1):80-87
Abstract Cultures throughout the world are associating with the rivers. People depend upon the rivers and their tributaries for food, water, transport, and many other aspects of their daily lives. Unfortunately, human beings have not calculated the accurate lengths for the great rivers even today. The lengths of the rivers are very different in popular textbooks, magazines, atlases and encyclopedias, etc. To accurately determine the lengths of the principal rivers of the world, the combination of satellite image analysis and field investigations to the source regions is proposed in this paper. The lengths of the Nile, Amazon, Yangtze, Mississippi, Yellow, Ob, Yenisey, Amur, Congo and Mekong, with lengths over or close to 5000 km, were calculated using the proposed method. The results may represent the most reliable and accurate lengths of the principal rivers of the world that are currently achievable. 相似文献
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软科学这一术语是70年代在国外提出的.然而30多年以来,它在国外不仅未得到普遍的承认,而且对软科学的定义也还未能达成大体上一致的共识.而在改革开放后的中国,出于决策科学化和民主化的需要,经过一些领导人的提倡和支持,特别是通过1986年召开的软科学座谈会及1994年召开的全国软科学工作会议,软科学事业得到了蓬勃的发展.据初步统计,截止1998年底全国共有软科学研究机构1224个,研究人员32655人,初步形成了一支较为强大的研究队伍,并取得了数百项覆盖多个领域的研究成果,为支持各级各类的决策发挥了一定的作用. 相似文献
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Tobias Nilsson Benedikt Soja Kyriakos Balidakis Maria Karbon Robert Heinkelmann Zhiguo Deng Harald Schuh 《Journal of Geodesy》2017,91(7):857-866
The very long baseline interferometry (VLBI) Intensive sessions are typically 1-h and single-baseline VLBI sessions, specifically designed to yield low-latency estimates of UT1-UTC. In this work, we investigate what accuracy is obtained from these sessions and how it can be improved. In particular, we study the modeling of the troposphere in the data analysis. The impact of including external information on the zenith wet delays (ZWD) and tropospheric gradients from GPS or numerical weather prediction models is studied. Additionally, we test estimating tropospheric gradients in the data analysis, which is normally not done. To evaluate the results, we compared the UT1-UTC values from the Intensives to those from simultaneous 24-h VLBI session. Furthermore, we calculated length of day (LOD) estimates using the UT1-UTC values from consecutive Intensives and compared these to the LOD estimated by GPS. We find that there is not much benefit in using external ZWD; however, including external information on the gradients improves the agreement with the reference data. If gradients are estimated in the data analysis, and appropriate constraints are applied, the WRMS difference w.r.t. UT1-UTC from 24-h sessions is reduced by 5% and the WRMS difference w.r.t. the LOD from GPS by up to 12%. The best agreement between Intensives and the reference time series is obtained when using both external gradients from GPS and additionally estimating gradients in the data analysis. 相似文献
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In this letter, we are trying to resolve the electromagnetic problem for the movements of the superconducting particles of the protoplanetary cloud in the magnetic field of Saturn. The force of levitation (Meissner-Ochsenfeld phenomenon) is introduced to the field of planetary science for the first time. It is shown from our theoretical analysis that rings of Saturn might have a superconducting origin, and rings might levitate within magnetic equator plane of the planet. 相似文献
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根据残差二次型次小与最小之差进行整周模糊度确认的关键是差值的分布,只有得到了合理的差值分布才可确定合理的界值.文中基于原有的两种方法及这两种方法的不足,从理论上导出了满足条件的差值分布,并作了一定的说明. 相似文献