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SAR interferometry technology and applications – an verview in the contest of Indian insar group activities

K. S. Rao1 and R. K. Midha2
1CSRE, Indian Institute of Technology Bombay, Mumbai – 400 076
2DST, Government of India, New Delhi

SAR Interferometry has taken roots in India due to its potential applications and the initiatives taken by Department of Science and Technology, Government of India in cooperation with CSRE, IIT Bombay. To strengthen the promotion of this field, an Indian InSAR Group was formed with several sub-groups involving almost all the National Institutions in the country. The main objectives of this Indian InSAR group is to 1) develop an Indigenous InSAR package which can be made available to all the interested investigators, 2) to develop manpower by organising a series of training programs at elementary and advanced levels, 3) to create Website for Indian InSAR group, 4) to organise International seminars/workshops. Towards the research side, Five Applications groups are identified, each concentrating on Glacier, Eartquake, landslide, DEM, land subsidence etc. Several research projects are being formulated by NGRI, IIT-B, SASE etc aiming at developing case studies of applications on different themes. At CSRE, IIT-Bombay, GAMMA software was installed and is available to any user. We also acquired a large number of SAR Pairs of different parts of India. CSRE conducted a series of experiments at Bhavnagar to simulate Earth crust movements and the same was estimated using D-InSAR technique. The results of the experiment were highly encouraging. Efforts are in progress to generate accurate DEMs coupled with GPS estimates. In the paper, a detailed account of the activities of Indian InSAR Group will be presented.