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Proceedings Paper

Design of a low cost miniaturized SFCW GPR with initial results
Author(s): Swati Duggal; Piyush Sinha; Manish Gupta; Anand Patel; V. V. Vedam; Pratik Mevada; Rajesh Chavda; Amita Shah; Deepak Putrevu
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Paper Abstract

This paper discusses about the design &developmental of Ground Penetrating Radar (GPR), various scientific and commercial applications of GPR along with the testing and results of GPR at Antarctica for Ice thickness measurement. GPR instruments are categorised as per their frequency of operation, which is inversely proportional to the depth of penetration. GPRs are also categorized as per method of operation which is time-domain or frequency-domain. Indian market is presently procuring GPRs from only foreign suppliers. Space Applications Centre (SAC) had taken up GPR as R&D Technological development with a view to benchmark the technology which may be transferred to local industry for mass production of instrument at a relatively cheaper cost (~20 times cheaper). Hence, this instrument presents a viable indigenous alternative. Also, the design and configuration was targeted for terrestrial as well as future interplanetary (Lander/Rover) missions of ISRO to map subsurface features. The developed GPR has a very large bandwidth (100%, i.e. bandwidth of 500MHz with centre-frequency of 500MHz) and high dynamic range along with the advantage of being highly portable (<10kg). The system was configured as a Stepped-Frequency-Continuous-Wave (SFCW) GPR which is a frequency domain GPR with the aim to increase the detection capabilities with respect to current systems. In order to achieve this goal, innovative electronic equipment have been designed and developed. Three prototypes were developed and two of them have been delivered for Indian Scientific Expedition to Antarctica (ISEA) in 2013 and 2014-15, respectively and promising results have been obtained. The results from the same closely compare with that from commercial GPR too.

Paper Details

Date Published: 2 May 2016
PDF: 7 pages
Proc. SPIE 9881, Earth Observing Missions and Sensors: Development, Implementation, and Characterization IV, 988110 (2 May 2016); doi: 10.1117/12.2223303
Show Author Affiliations
Swati Duggal, Space Applications Ctr. (India)
Piyush Sinha, Space Applications Ctr. (India)
Manish Gupta, Space Applications Ctr. (India)
Anand Patel, Space Applications Ctr. (India)
V. V. Vedam, Space Applications Ctr. (India)
Pratik Mevada, Space Applications Ctr. (India)
Rajesh Chavda, Space Applications Ctr. (India)
Amita Shah, Space Applications Ctr. (India)
Deepak Putrevu, Space Applications Ctr. (India)

Published in SPIE Proceedings Vol. 9881:
Earth Observing Missions and Sensors: Development, Implementation, and Characterization IV
Xiaoxiong J. Xiong; Saji Abraham Kuriakose; Toshiyoshi Kimura, Editor(s)

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