Comparison of Different Methods for Topographic Survey of Rural Canals

2020 ◽  
pp. 59-67
Author(s):  
Daniele Masseroni ◽  
Daniele Passoni ◽  
Alessandro Castagna ◽  
Luca Civelli ◽  
Livio Pinto ◽  
...  
Keyword(s):  
Topographic Survey

The rock-cut chamber tombs of Labraunda

2016 ◽  
Vol 9 ◽  
pp. 271-284
Author(s):  
Paavo Roos
Keyword(s):  
Topographic Survey

The rock-cut chamber tombs form a very small percentage of the rock-cut tombs in Labraunda. The majority of these tombs, situated next to the sanctuary, were studied by Paul Åström in 1950 together with the sarcophagi; two improved from natural caves further from the sanctuary in both directions were found in a topographic survey conducted by Lars Karlsson in 2005, and finally one tomb at some distance away on the plain is also included in the article. The tombs are of various types and are probably to be dated to the Hellenistic and Roman periods. No finds have been recorded in them, either in 1950 or later.

scholarly journals INFLUENCE OF SOIL AND TOPOGRAPHY ON THE COMPOSITION OF A TREE COMMUNITY IN A CENTRAL BRAZILIAN VALLEY FOREST

2005 ◽  
Vol 62 (1-2) ◽  
pp. 69-90 ◽  
Author(s):  
J. R. R. PINTO ◽  
A. T. OLIVEIRA-FILHO ◽  
J. D. V. HAY
Keyword(s):  
Tree Species ◽  
Mato Grosso ◽  
Central Brazil ◽  
Tree Community ◽  
Topographic Survey ◽  
Species Abundances ◽  
Chief Factors ◽  
Components Analysis ◽  
Upper Slope ◽  
Properties Of Soil

The purpose of the present study was to investigate the correlations between environmental variables related to the substrate (soil and topography) and the distribution of tree species in a valley forest in the Chapada dos Guimarães National Park, Mato Grosso State, Brazil. The forest lies in the Cerrado Domain of Central Brazil where the dominant vegetation cover is cerrado (woody savanna). A survey of the tree community registered all live individuals with circumference at breast height (cbh)≥15cm found in eighteen 600m2 plots (total area 1.08ha). The substrate variables used in the gradient analyses were obtained from a topographic survey and from analyses of the chemical and physical properties of soil samples. A principal components analysis of soil and topography variables and a canonical correspondence analysis of the species–environment relationships produced similar results, separating both the substrate variables and the tree species abundances, mainly according to the two types of bedrock, sandstone or slate, underlying their soils, and secondly to the three topographic sectors recognized: Streamside, Mid Slope and Upper Slope. The differences in soil fertility and texture (related to the bedrocks) and the soil water regime (related to both soil texture and topography) were probably the chief factors determining the distribution of tree species in the forest.

scholarly journals Smart Ocean: A New Fast Deconvolved Beamforming Algorithm for Multibeam Sonar

Sensors ◽  
2018 ◽  
Vol 18 (11) ◽  
pp. 4013 ◽  
Author(s):  
Jie Huang ◽  
Tian Zhou ◽  
Weidong Du ◽  
Jiajun Shen ◽  
Wanyuan Zhang
Keyword(s):  
High Frequency ◽  
Real Data ◽  
Side Lobe ◽  
Tunnel Effect ◽  
Computation Complexity ◽  
Acoustic Image ◽  
Multibeam Sonar ◽  
Sonar System ◽  
Topographic Survey ◽  
Beamforming Algorithm

A new fast deconvolved beamforming algorithm is proposed in this paper, and it can greatly reduce the computation complexity of the original Richardson–Lucy (R–L algorithm) deconvolution algorithm by utilizing the convolution theorem and the fast Fourier transform technique. This algorithm makes it possible for real-time high-resolution beamforming in a multibeam sonar system. This paper applies the new fast deconvolved beamforming algorithm to a high-frequency multibeam sonar system to obtain a high bearing resolution and low side lobe. In the sounding mode, it restrains the tunnel effect and makes the topographic survey more accurate. In the 2D acoustic image mode, it can obtain clear images, more details, and can better distinguish two close targets. Detailed implementation methods of the fast deconvolved beamforming are given, its computational complexity is analyzed, and its performance is evaluated with simulated and real data.

scholarly journals Utilization of Agricultural Land in the Russian Federation

2018 ◽  
Vol 9 ◽  
pp. 75-80
Author(s):  
Sergey Volkov ◽  
Vladimir Kosinsky
Keyword(s):  
Land Use ◽  
Russian Federation ◽  
Agricultural Sector ◽  
Agricultural Land ◽  
Environmental Safety ◽  
Topographic Survey ◽  
Land Survey ◽  
The Russian Federation ◽  
Accelerated Growth ◽  
Land Inventory

This article reviews the initiatives for setting up rational use and protection of agricultural lands in order to ensure accelerated growth of the agricultural sector of the Russian Federation, enhancing its sustainability, efficiency, competitiveness, and environmental safety. It is hereby proposed to complete the differentiation of public lands into federal property, property of the subjects of the Russian Federation, property of municipal settlements; as well as to conduct topographic survey of lands in the Russian Federation (to establish and locally document the boundaries of territories of the subjects of the Russian Federation; municipal settlements; communities; special-purpose lands; areas with special land use conditions; and to systematically (once every 5 years) perform agricultural land inventory in order to identify unused, irrationally used or non-purposely used lands, as well as land use in violation of the relevant permitted use of land plots; to relaunch land survey works relating with the performance of pedagogic, geobotanical and other studies and research.

scholarly journals RESEARCH OF THE METHOD OF ORTHOPHOTOMAP DECIVED FROM UAV IMAGES WITH LARGE TILT ANGLES

2021 ◽  
Vol 6 ◽  
pp. 12-17
Author(s):  
Denis V. Arutyunov
Keyword(s):  
Error Analysis ◽  
Data Processing ◽  
Flow Diagram ◽  
Topographic Survey ◽  
Uav Images

The article reflects the method of orthophotomap decivetion. The flow diagram of UAV data processing in Photomod is presented. The final processing results are presented in the form of an orthophotomap. The technology for constructing point objects for further error analysis is presented. The calculation of the plotted points in Excel for further error analysis was performed. Errors based on the tolerances that are proposed in the instructions for topographic survey are analyzed.

scholarly journals PRODUCTION EXPERIENCE OF JOINT APPLICATION OF ELECTRON TACHETOMETRY METHOD AND SATELLITE RECEIVERS

2020 ◽  
pp. 42-47
Author(s):  
Э. И. Ибрагимова ◽  
И. Г. Гайрабеков ◽  
А. Т. Мишиева
Keyword(s):  
Research Design ◽  
Office Work ◽  
Construction Work ◽  
Joint Application ◽  
Topographic Survey ◽  
Production Experience ◽  
Design And Construction

В процессе проведения реконструкций зданий инженерно-геодезические изыскания дают возможность получить всю необходимую информацию о рельефе земной поверхности и построенных объектах на участке проектирования. Условия выполнения работ и объем изысканий обуславливают структуру изыскательских подразделений. На данные параметры оказывают свое влияние сложность проектирования и строительство исследуемого объекта, поэтому они должны быть отражены в программе изыскательских работ. В данной статье представлен производственный опыт совместного применения метода электронной тахеометрии и спутниковых приемников. Полученная в ходе топографической съемки, входящей в состав инженерно-геодезических изысканий, информация может быть использована в качестве базы для дальнейшего исследования, проектирования и проведения строительных работ. In the process of reconstructing buildings, engineering and geodetic surveys make it possible to obtain all the necessary information about the relief of the earth’s surface and constructed objects on the design site. The terms of the work and the volume of research determine the structure of the survey units. These parameters are influenced by the complexity of the design and construction of the object under study, so they should be reflected in the program of survey work. In this article, while conducting engineering and geodetic surveys for the purpose of designing the reconstruction of the laboratory building, field and office work was carried out, and a topographic plan of the object was drawn up. The information obtained during the topographic survey, which is part of the engineering and geodetic surveys, is used as a basis for further research, design and construction work.

Topographic Survey

1893 ◽  
Vol 30 (3) ◽  
pp. 62-80
Author(s):  
Herbert G. Ogden
Keyword(s):  
Topographic Survey
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