thumbnail

SHORT-PULSE ELECTROMAGNETIC TRANSPONDER FOR HOLE-TO-HOLE USE.

IEEE Transactions on Geoscience and Remote Sensing
By: , and 

Links

  • The Publications Warehouse does not have links to digital versions of this publication at this time
  • Download citation as: RIS | Dublin Core

Abstract

Hole-to-hole observations were made through nearly 20 m of granite using an electromagnetic transponder (an active reflector) in one borehole and a single-hole short-pulse radar in another. The transponder is inexpensive, operationally simple, and effective in extending the capability of a short-pulse borehole radar system to allow hole-to-hole operation without requiring timing cables. A detector in the transponder senses the arrival of each pulse from the radar. Each pulse detection triggers a kilovolt-amplitude pulse for retransmission. The transponder 'echo' may be stronger than that of a passive reflector by a factor of as much as 120 db. The result is an increase in range capability by a factor which depends on attenuation in the medium and hole-to-hole wavepath geometry.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title SHORT-PULSE ELECTROMAGNETIC TRANSPONDER FOR HOLE-TO-HOLE USE.
Series title IEEE Transactions on Geoscience and Remote Sensing
Volume GE-22
Issue 6
Year Published 1983
Language English
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title IEEE Transactions on Geoscience and Remote Sensing
First page 720
Last page 725
Conference Title Int Geosci and Remote Sens Symp (IGARSS '83), Remote Sens, Extending Man's Horiz
Conference Location San Francisco, CA, USA
Conference Date 31 August 1983 through 2 September 1983