Development of a UHF transponder for geological monitoring of boreholes drilled through ice sheets using phase-sensitive FMCW radar

Amiri, Amin and Brennan, Paul V. and Lok, Lai Bun (2017) Development of a UHF transponder for geological monitoring of boreholes drilled through ice sheets using phase-sensitive FMCW radar. In: 2017 IEEE MTT-S International Microwave Symposium, IMS 2017. Institute of Electrical and Electronics Engineers Inc., USA, pp. 1746-1749. ISBN 9781509063604

[img]
Preview
PDF (Brennan_PID4678901)
Brennan_PID4678901.pdf - Accepted Version
Available under License Creative Commons Attribution-NonCommercial.

Download (506kB)

Abstract

This paper presents an active UHF transponder designed for geological monitoring of boreholes drilled through ice sheets. It forms part of a phase-sensitive frequency modulated continuous wave (FMCW) radar system to measure the horizontal position of a borehole with depth. To distinguish the transponder response from stationary clutter, the transponder modulates the received signal before re-transmission to the surface radars. The transponder operates from 292 to 492 MHz with a gain around 18 dB. The transponder employs two novel antennas optimized for deployment within a 15 cm diameter borehole. The simulation and indoor laboratory measurement results of the transponder design are presented.

Item Type:
Contribution in Book/Report/Proceedings
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2200/2208
Subjects:
ID Code:
127740
Deposited By:
Deposited On:
01 Oct 2018 08:28
Refereed?:
Yes
Published?:
Published
Last Modified:
27 Sep 2020 06:45