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Navalgund, Ranganath
- Preface
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Current Science, Vol 108, No 5 (2015), Pagination: 825-825Abstract
No Abstract.Full Text
- Need for Developing Effective Early Warning Systems for Natural Disasters Using Space Technology
Abstract Views :267 |
PDF Views:80
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Affiliations
1 Indian Space Research Organisation, Bangalore 560 231, IN
1 Indian Space Research Organisation, Bangalore 560 231, IN
Source
Current Science, Vol 107, No 6 (2014), Pagination: 935-936Abstract
No Abstract.Full Text
- Preface
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PDF Views:72
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Current Science, Vol 113, No 10 (2017), Pagination: 1858-1858Abstract
Geospatial techniques in archaeology
Over the past five decades, archaeologists are increasingly using geospatial techniques such as remote sensing (RS), geographic information system (GIS) and global navigation satellite system (GNSS) to gain insights into archaeological landscapes. The application of these techniques has broadened the scope of archaeological investigations as well as the artefacts of interest to field archaeologists who have traditionally focused on tools, implements, inscriptions, monuments and other organic and inorganic material remains to also include human imprints on landscapes (soil marks, crop marks, drainage patterns, field boundaries, and a host of other man-made features).
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- The Science behind Archaeological Signatures from Space
Abstract Views :240 |
PDF Views:92
Authors
Affiliations
1 Indian Space Research Organization Headquarters, Bengaluru 560 231, IN
2 National Institute of Advanced Studies, IISc Campus, Bengaluru 560 012, IN
1 Indian Space Research Organization Headquarters, Bengaluru 560 231, IN
2 National Institute of Advanced Studies, IISc Campus, Bengaluru 560 012, IN
Source
Current Science, Vol 113, No 10 (2017), Pagination: 1859-1872Abstract
Archaeology has traditionally focused on studying historic or prehistoric people and their cultures by analysis of their artefacts, inscriptions, monuments and other such material remains, especially those that have been documented from excavations. This focus is somewhat narrow, because it excludes many new methods that have emerged in the last few decades (described in detail by Prabhakar and Korisettar in this special section (page 1873)). One such novel method is to study large imprints on the landscape caused by human activity. These tell-tale features include soil marks, crop marks, drainage patterns, field boundaries and a host of man-made structures, whose study can provide additional cultural insights. In some cases, these features are difficult to detect by the naked eye at ground level, but are detectable by remote sensing techniques from aerial/space-based platforms in a non-destructive manner. For these reasons, it is now well recognized that examining archaeological landscapes using remote sensing can complement traditional investigations. An analysis of remote sensing data can play an important role in (1) understanding spatial relationships between cultural materials and activities, (2) formulating archaeological sampling schemes, (3) measuring distances and spatial distributions of structures and monuments, and (4) evolving schemes for their conservation.Keywords
Archaeology, Image Interpretation, Remote Sensing, Signatures.Full Text
References
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- Comprehensive Remote Sensing, Volume 9:Applications for Societal Benefits
Abstract Views :258 |
PDF Views:74
Authors
Affiliations
1 Indian Space Research Organisation, Bengaluru - 560231, IN
1 Indian Space Research Organisation, Bengaluru - 560231, IN
Source
Current Science, Vol 115, No 5 (2018), Pagination: 988-988Abstract
Remote sensing (RS) refers to the science of sensing an object without being in physical contact with it. This is achieved by placing sensors onboard a spacecraft, aircraft, a balloon or an unmanned aerial vehicle, which detect reflected and/or emitted radiation from objects/earth surface features in different spectral regions. Data thus obtained are analysed to identify and characterize the earth surface features. The basic premise is that every object/earth surface feature reflects and/or emits electromagnetic radiation differently at different wavelengths. Space-borne RS began almost five decades ago with the launch of LANDSAT 1 by USA in 1972. Since then, many RS satellites carrying sensors operating in different parts of the electromagnetic radiation (visible, infrared, microwave), at different spatial resolution and frequency of observation have been launched by several countries. Data obtained by these satellites have been extensively used to map the entire earth surface, study natural resources such as agriculture, forestry, water resources, coastal zone, snow and glaciers, land forms, etc. for weather prediction and ocean state forecasting. Data obtained at different time intervals have allowed us to study how the resources have changed over a period of time and also to evolve measures for their conservation and sustainable development.Full Text
- Remote Sensing is A Powerful Tool, But Not a Panacea in Itself
Abstract Views :354 |
PDF Views:88
Authors
Affiliations
1 Formerly with the Space Applications Centre (ISRO), Ahmedabad 380 015, IN
1 Formerly with the Space Applications Centre (ISRO), Ahmedabad 380 015, IN
Source
Current Science, Vol 117, No 10 (2019), Pagination: 1551-1552Abstract
Remote sensing (RS), in particular spaceborne remote sensing has come a long way, ever since the successful launch of Earth Resources Technology Satellite-1 (renamed as LANDSAT-1) in 1972 by the National Aeronautics and Space Administration (NASA) of the United States. A large number of remote sensing satellites launched subsequently by different national space agencies, including India and a few commercial private operators have provided a variety of data to study the earth’s surface and, measurements of the atmosphere and the oceans. These datasets have been utilized in a number of programmes to inventory earth’s resources, study their condition and investigate changes over a period of time. A variety of application programmes, viz. agricultural crop production forecasts at national/sub national level, forest extents, identifying areas of deforestation, inventory of surface water bodies, snow cover, glaciers and their retreat, coastal zones, urban areas and their sprawl, geological resources, desertification, updation of topographic and thematic maps, etc., have been developed and used in many countries to advance national development. Data obtained from some of the specific satellites devoted to ocean and atmospheric observations have been used to improve ocean state forecasting, exploitation of some of the ocean resources and improved weather forecasting. Satellite observations have found an important and crucial role in facilitating early warning of some of the disasters, in monitoring and mitigation exercises, and in damage assessment. RS data have also been used in studying earth system science and in understanding various earth processes. RS has thus assumed the role of an indispensable tool.Full Text
- Space and Human Development, Revised Edition
Abstract Views :396 |
PDF Views:82
Authors
Affiliations
1 Esteem Gardenia Apartments, Sahakarnagar, Bengaluru 560 092, IN
1 Esteem Gardenia Apartments, Sahakarnagar, Bengaluru 560 092, IN
Source
Current Science, Vol 118, No 5 (2020), Pagination: 835-836Abstract
India’s space programme since its inception in the 1960s, has been driven by the desire to harness space technology for national development. Indigenous efforts to develop launch vehicles, spacecraft and their various sub-systems for communication, remote sensing and navigation purposes, spaceport to facilitate launches, and to build a network of mission centres for telemetry, tracking and command of satellites have been successfully undertaken over the last six decades. Important national programmes to use space infrastructure and data for developmental purposes in the field of natural resources survey/monitoring, improving weather forecasting, education, telemedicine, social empowerment, disaster monitoring and mitigation have been conceptualized and executed with enthusiasm. In addition, a few missions to the moon and Mars and an Astrosat mission to study stars have been launched successfully, and significant results have been obtained. The Indian space programme is held in high esteem internationally and India is one of the six countries/agencies in the world to have mastered different aspects of space technology and applications. Such an effort needs to be told to a larger audience through publications.Full Text
- An Autobiography of the Moon
Abstract Views :242 |
PDF Views:88
Authors
Affiliations
1 Space Applications Centre (ISRO), Ahmedabad, India; National Remote Sensing Centre (ISRO), Hyderabad, IN
1 Space Applications Centre (ISRO), Ahmedabad, India; National Remote Sensing Centre (ISRO), Hyderabad, IN
Source
Current Science, Vol 118, No 8 (2020), Pagination: 1311-1312Abstract
This book consists of 16 small chapters, each answering one particular aspect of the moon. It is written in the format of an autobiography. It is very readable in view of its language as well as the font size used in printing. Moon, the only satellite of the earth, has been an object of immense interest to astronomers, planetary scientists, the general public, poets, romantics and children. Its changing phases have been a source of curiosity and many folklore stories are abundant in literature.Full Text