Geographic Space Ontology, Locus-Object, and Spatial Data Representation Semantic Theory

2014 ◽  
pp. 28-52
Author(s):  
Sébastien Gadal
Keyword(s):  
Remote Sensing ◽  
Spatial Data ◽  
General Framework ◽  
Data Representation ◽  
Semantic Theory ◽  
Semantic Concept ◽  
Geographic Space ◽  
The Earth ◽  
Geographic Object

Within the general framework of the analysis of the geographic space and its ontological components by remote sensing, the author explores the ability of the morphogenetic modeling in the recognition of one major ontological and semantic concept of geography: the “locus-object.” The “locus-object” couple concept results from the interrelation formalization between the geographic locus, the geographic object, and the geo-localization notions. Geographic loci and objects are linked and both geo-localized. The links and relations between locus and object are mathematically formalized by geospatiology, the study of the logical role of space in the study of entities on the surface of the Earth. Morphogenetic modeling recognizes the loci of the geographic space by spatial discontinuities detection. The spatial discontinuities allow the identification of the types of spatial differentiations (boundaries, limits) between two geographic entities. The concept of “locus-object” is one of the key conceptual ontological elements of the geographic space.

scholarly journals ROLE OF REMOTE SENSING AND GIS IN FORESTRY

2014 ◽  
pp. 231-235
Author(s):  
MEGHA GUPTA ◽  
ANKITA KHARE ◽  
SRASHTI PATHAK
Keyword(s):  
Remote Sensing ◽  
Large Volume ◽  
Spatial Data ◽  
Direct Contact ◽  
Remote Sensing And Gis ◽  
Computer Hardware ◽  
Space Technology ◽  
Common People ◽  
The Earth

The Earth is constantly under observation from dozens of satellites orbiting the planet and collecting data. They are engaged in something called "remote sensing”: the act of obtaining information about something without being in direct contact with it. Now-a-days the field of Remote Sensing and GIS has become exciting and glamorous with rapidly expanding opportunities. Many organizations spend large amounts of money on these fields. Here the question arises why these fields are so important in recent years. Two main reasons are there behind this. Now-a-days scientists, researchers, students, and even common people are showing great interest for better understanding of our environment. Development in complicated space technology which can provide large volume of spatial data, along with declining costs of computer hardware and software has made Remote Sensing and G.I.S. affordable to not only complex environmental/spatial situation but also affordable to an increasingly wider audience.

Analysis of Remote Sensing based Vegetation Indices (VIs) for Unmanned Aerial System (UAS): A Review

2020 ◽  
Vol 3 (2) ◽  
pp. 58-73
Author(s):  
Vijay Bhagat ◽  
Ajaykumar Kada ◽  
Suresh Kumar
Keyword(s):  
Remote Sensing ◽  
Spatial Data ◽  
Satellite Remote Sensing ◽  
Vegetation Indices ◽  
Unmanned Aerial System ◽  
Sustainable Land Management ◽  
Efficient Tool ◽  
Site Specific ◽  
The Earth ◽  
Interesting Area

Unmanned Aerial System (UAS) is an efficient tool to bridge the gap between high expensive satellite remote sensing, manned aerial surveys, and labors time consuming conventional fieldwork techniques of data collection. UAS can provide spatial data at very fine (up to a few mm) and desirable temporal resolution. Several studies have used vegetation indices (VIs) calculated from UAS based on optical- and MSS-datasets to model the parameters of biophysical units of the Earth surface. They have used different techniques of estimations, predictions and classifications. However, these results vary according to used datasets and techniques and appear very site-specific. These existing approaches aren’t optimal and applicable for all cases and need to be tested according to sensor category and different geophysical environmental conditions for global applications. UAS remote sensing is a challenging and interesting area of research for sustainable land management.

scholarly journals Priority scientific and technical tasks in the field of exploration and efficient use of outer space

2019 ◽  
Vol 89 (5) ◽  
pp. 496-501
Author(s):  
V. A. Soloviev ◽  
A. A. Kovalenko ◽  
S. V. Soloviev
Keyword(s):  
Remote Sensing ◽  
Noise Immunity ◽  
Outer Space ◽  
Space Communications ◽  
Existing Problems ◽  
Space Navigation ◽  
The Earth ◽  
Fundamental Research ◽  
The Russian Federation

The article discusses the main directions of development of cosmonautics, which have an impact on ensuring the connectivity of the territories of the Russian Federation. The key role of such areas of space activity as space navigation, space communications, remote sensing of the Earth, applied and fundamental research in space is shown. An analysis of the development trends of applied cosmonautics, existing problems and ways to solve them is conducted: increasing the scientific space and remote sensing group of the Earth, methods of improving the accuracy of positioning, availability, noise immunity of space navigation, etc.

scholarly journals Remote Sensing and Geographic Information System in Water Erosion Assessment

2020 ◽  
Author(s):  
Nirmal Kumar ◽  
S. K. Singh ◽  
G. P. Obi Reddy ◽  
V. N. Mishra ◽  
R. K. Bajpai
Keyword(s):  
Remote Sensing ◽  
Information System ◽  
Geographic Information System ◽  
Spatial Data ◽  
Soil Loss ◽  
Water Erosion ◽  
Geographic Information ◽  
Geographical Information ◽  
Comprehensive Overview

The aim of this review paper is to provide a comprehensive overview of geographical information system and remote sensing–based water erosion assessment. With multispectral and multi-temporal low cost data at various resolutions, remote sensing plays an important role for mapping the distribution and severity of water erosion and for modeling the risk and/or potential of soil loss. The ability of geographic information system to integrate spatial data of different types and sources makes its role unavoidable in water erosion assessment. The role of satellite data in identification of eroded lands and in providing inputs for erosion modeling has been discussed. The role of GIS in mapping eroded lands based on experts’ opinion, in generating spatial data inputs from sources other than remote sensing and in integrating the inputs to model the potential soil loss has been discussed.

Role of Satellite Technology in Oceanic Study

2018 ◽  
pp. 80-103
Author(s):  
Thomas Mathew
Keyword(s):  
Remote Sensing ◽  
Electromagnetic Radiation ◽  
Crucial Role ◽  
Near Infrared ◽  
Thermal Infrared ◽  
Microwave Region ◽  
Satellite Technology ◽  
The Earth

The three-fourth surface of the earth is covered with ocean. The study of the ocean is important for sustainable overall development of a nation and world at large in view of it being rich in resources and playing a crucial role in the climate of the region and changes associated with it. The space-based observations assume significance, as it provides synoptic and repetitive coverage of the ocean in contrast to the sparse and isolated in-situ buoy or ship observations. The remote sensing of the ocean with the help of satellite or satellite oceanography has many other applications also. The electromagnetic radiation in the visible, near infrared, thermal infrared, and microwave regions are used by the sensors on-board space platforms to measure the diverse physical, biological, and geological parameters of the ocean. Amongst the various electromagnetic regions, the microwave region plays an important role in the study of the ocean.

scholarly journals APPROACH TO CONSTRUCTING 3D VIRTUAL SCENE OF IRRIGATION AREA USING MULTI-SOURCE DATA

2015 ◽  
Vol II-2/W2 ◽  
pp. 227-233
Author(s):  
S. Cheng ◽  
M. Dou ◽  
J. Wang ◽  
S. Zhang ◽  
X. Chen
Keyword(s):  
Remote Sensing ◽  
Spatial Data ◽  
Research Direction ◽  
Data Representation ◽  
Google Earth ◽  
Future Research ◽  
3D Gis ◽  
Irrigation Area ◽  
Virtual Scene ◽  
Source Data

For an irrigation area that is often complicated by various 3D artificial ground features and natural environment, disadvantages of traditional 2D GIS in spatial data representation, management, query, analysis and visualization is becoming more and more evident. Building a more realistic 3D virtual scene is thus especially urgent for irrigation area managers and decision makers, so that they can carry out various irrigational operations lively and intuitively. Based on previous researchers' achievements, a simple, practical and cost-effective approach was proposed in this study, by adopting3D geographic information system (3D GIS), remote sensing (RS) technology. Based on multi-source data such as Google Earth (GE) high-resolution remote sensing image, ASTER G-DEM, hydrological facility maps and so on, 3D terrain model and ground feature models were created interactively. Both of the models were then rendered with texture data and integrated under ArcGIS platform. A vivid, realistic 3D virtual scene of irrigation area that has a good visual effect and possesses primary GIS functions about data query and analysis was constructed.Yet, there is still a long way to go for establishing a true 3D GIS for the irrigation are: issues of this study were deeply discussed and future research direction was pointed out in the end of the paper.

scholarly journals GENERAL STRUCTURE, TYPES AND FORMATS OF DIGITAL DATA OF REMOTE SENSING OF THE EARTH

2020 ◽  
Vol 70 (2) ◽  
pp. 295-300
Author(s):  
D. Shaimerdenov ◽  
◽  
A. Zakirova ◽  
Keyword(s):  
Remote Sensing ◽  
Data Storage ◽  
General Structure ◽  
Remote Sensing Data ◽  
Data Representation ◽  
Digital Data ◽  
Earth Remote Sensing ◽  
The Earth ◽  
Modern Development ◽  
Indispensable Tool

Earth remote sensing technologies (ERS) are an indispensable tool for the study and continuous monitoring of our planet, helping to effectively use and manage its resources. The modern development of remote sensing technologies expands the scope of their application, covering all aspects of our lives. This article describes the main stages of the development of remote sensing technologies, provides an overview of methods for observing elements of the environment, and considers the General structure, types and formats of digital data for remote sensing of the Earth. The main characteristics of aerospace survey data are defined, methods of storing coordinate reference data and data storage formats are considered. The main methods for representing geographical data are given, and the important qualities of each type of remote sensing data representation are described. The analysis of integration types to represent geographic data and identified the principal benefits of an integrated data view ERS.

scholarly journals TECHNOLOGICAL APPROACHES TO THE FORMATION OF DIGITAL IMAGES OF TERRAIN OBJECTS DURING REMOTE SENSING OF THE EARTH FROM PHOTO AND RADAR SYSTEMS

2020 ◽  
pp. 32-43
Author(s):  
V. Druzhynin ◽  
M. Stepanov ◽  
G. Zhyrov ◽  
V. Trofimchuk
Keyword(s):  
Remote Sensing ◽  
Spatial Data ◽  
Simulation Modeling ◽  
Communication Systems ◽  
Digital Images ◽  
General Structure ◽  
Radar Images ◽  
Radar Systems ◽  
The Earth ◽  
A Chain

The paper is devoted to the consideration of the current state and trends in the use of simulation modeling for mathematical modeling of terrain data obtained from the processing of digital images, both from photos and radar systems of Aerospace-based aircraft. The relevance of considering the state and trends in the development of technological approaches in modeling systems is due to the practical need to obtain data from photo and radar images of objects in the system's viewing area, taking into account the growing requirements for the efficiency and accuracy of determining (detecting) images of observation objects in real time in difficult conditions. The general structure of the construction of technologies used for simulation modeling of terrain objects is given the main prospects for practical application of these technologies in solving problems of classification and monitoring of terrain objects are determined. Estimates of the main technological approaches to images of objects in the application of the considered systems and assessment of the accuracy of determining terrain coordinates are given. Channels of information transmission in the process of receiving and processing data from photo and radar systems of remote sensing of the earth are considered. Also, as an example, a chain-node model of spatial data about objects that are obtained during remote sensing of the Earth and are represented as linear and point-based. To create a geographical basis for further modeling of various telecommunications and communication systems. This will allow for more accurate development of telecommunications and communication systems based on geographical data. Take into account the closing angles when forming a cellular connection.

Forecast of manifestations of dangerous geological processes in Dnipropetrovsk with the use of methods of aerospace remote sensing of the Earth

2004 ◽  
Vol 10 (5-6) ◽  
pp. 194-196
Author(s):  
V.I. Voloshin ◽  
◽  
A.S. Levenko ◽  
N.N. Peremetchik ◽  
◽  
...  
Keyword(s):  
Remote Sensing ◽  
Geological Processes ◽  
The Earth
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