Proceedings of the Symposium on Global and Environmental Monitoring: Proceedings of the Symposium on Global and Environmental Monitoring

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Persistent identifier:: 856665355

Title:: Proceedings of the Symposium on Global and Environmental Monitoring

Sub title:: techniques and impacts ; September 17 - 21, 1990, Victoria Conference Centre, Victoria, British Columbia, Canada

Year of publication:: 1990

Place of publication:: Victoria, BC

Publisher of the original:: [Verlag nicht ermittelbar]

Identifier (digital):: 856665355

Language:: English

Document type:: Multivolume work

Volume

Persistent identifier:: 856669164

Title:: Proceedings of the Symposium on Global and Environmental Monitoring

Sub title:: techniques and impacts; September 17 - 21, 1990, Victoria Conference Centre, Victoria, British Columbia, Canada

Scope:: XIV, 912 Seiten

Year of publication:: 1990

Place of publication:: Victoria, BC

Publisher of the original:: [Verlag nicht ermittelbar]

Identifier (digital):: 856669164

Illustration:: Illustrationen, Diagramme, Karten

Signature of the source:: ZS 312(28,7,1)

Language:: English

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Editor:: International Society for Photogrammetry and Remote Sensing, Commission of Photographic and Remote Sensing Data

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2016

Document type:: Volume

Collection:: Earth sciences

Chapter

Title:: [THP-5 IMAGE INTERPRETATION AND ANALYSIS]

Document type:: Multivolume work

Structure type:: Chapter

Chapter

Title:: THE INDIAN REMOTE SENSING SATELLITE (IRS-1A) AND ITS APPLICATION POTENTIALS. MG Chandrasekhar, V Jayaraman, K Radhakrishnan, CBS Dutt, B Manikiam, PP Nageswara Rao

Document type:: Multivolume work

Structure type:: Chapter

736 THE INDIAN REMOTE SENSING SATELLITE (IRS-1A) AND ITS APPLICATION POTENTIALS MG Chandrasekhar, V Jayaraman, K Radhakrishnan, CBS Dutt, B Manikiam, PP Nageswara Rao Indian Space Research Organisation Headquarters, Bangalore India ABSTRACT The Indian Remote Sensing Satellite (IRS) - 1A is the first of a series of indigenous remote sensing satellites that will serve the needs of resources survey and management. The operationalisation of IRS-1A and the effective use of IRS-1A data for various natural resources study is an important milestone in the Indian Remote Sensing Programme and it forms the back-bone for India's National Natural Resources Management System (NNRMS). The IRS-1A Satellite was launched on March 17, 1988 and was declared operational on April 7, 1988. Since then the data from the Satellite is being collected on a routine basis and are supplied to users in India and abroad on an operational basis. Imaging Sensors on-board IRS-1A use state-of- art pushbroom scanners with CCDs as detectors and their characteristics in terms of spatial, spectral resolutions and swath were arrived at based on application needs of various remote sensing data users. The LISS-I (Linear Imaging Self Scanning) sensor has spatial resolution of 72 meters and swath 148 kms. The LISS-II sensors, two in number, provide spatial resolution of 36ms and ground swath 74 kms each and are designated as LISS-IIA and LISS-IIB and provide combined swath of 145 kms. Radiometric resolution of these sensors is 128 levels. The unique feature of this satellite is the dual resolution offered by the LISS-I (72 ms) and LISS-II (36 ms) sensors of IRS-1A which helps in looking at features in two different scales with uniform local conditions of the same area. This capability of overview of larger areas and at the same time providing an in-depth look at finer areas has been effectively made use of by the user agencies. Ever since its launch, the data from IRS-1A has been used extensively in various natural resources applications such as landuse/land cover, crop acreage estimations for rice and wheat, forest type identification, wastelands, soil salinity and land degradation, urban landuse, ground water targetting, hydrological studies relating to minor irrigation, command area studies, etc. IRS-1A data also has been used fob environmental studies relating to wild-life habitat analysis, estuarine eco-systems, turbidity levels of reservoirs and integrated drought management. In the field of coastal oceanography the potential of IRS data for coastal wetland mapping, mangrove identification and land form studies in Mahi estuary showed that IRS data are complementary to Landsat and SPOT. In addition IRS data is being operationally used in mapping the country's major flood, and related property losses and also in estimating the country’s total agricultural area for agro-climatic zones planning. Key Words : The Indian Remote Sensing Satellite (IRS-1A), LISS sensors, Application potentials, Natural resources management. 1.0 INTRODUCTION Recognising the potentials and importance of systematic and periodic environmental data collection using space instrumentation, Indian Space Research Organisation/Department of Space, Government of India has conducted in the last two decades a variety of extensive studies using aerial flights and experimental satellite missions like Bhaskara I & II, with the active participation of user agencies. The IRS programme was initiated in early eighties in order to ultimately achieve a Natural Resources Information System for India. IRS-1A mission is the first step in evolving such an operational resources Management System for India. The IRS-1A satellite was designed and developed indigeneously and was launched on March 17, 1988 into a polar Sun-synchronous orbit of 904 km altitude by the Soviet Launcher VOSTAK from Bikanur. The orbital manoeuvres were completed and IRS-1A attained its designated Sun-synchronous orbit on April 7, 1988. Since then the data is collected on a routine basis as per the IRS referencing scheme and data products are supplied to the users on an operational basis. This paper briefly presents the specifications of the spacecraft and gives an account of its application potentials in the management of the natural resources of India (DOS, 1983). 1.1 The Mission The polar sunsynchronous orbit of 904 kms altitude was chosen for IRS-1A with the equatorial crossing time of 10.25 AM in the descending node. Thus IRS-1A passes

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