Skip to main content Accessibility help
×
Home

Design and Operation of a Portable, Digital Impulse Radar

  • F.H.M. Jones (a1), B.B. Narod (a1) and G.K.C. Clarke (a1)

Abstract

We have constructed a back-portable, impulse radar instrument that weighs roughly 12 kg, can be powered by dry cells, and records and stores data digitally. The radar is controlled by an on-board, purpose-built microcomputer that ensures simple field operation, facilitates modifications, and allows unattended operation when investigating time-varying targets. The transmitting unit is triggered from the receiver via an optical link and generates an electromagnetic wavelet by discharging two high-voltage capacitors through back-to-back silicon-controlled rectifiers into a resistively loaded dipole antenna. Successful field operations carried out during the summers of 1986 and 1987 include depth profiling, as well as studies of englacial and subglacial targets, on several temperate and sub-polar glaciers.

  • View HTML
    • Send article to Kindle

      To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

      Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

      Find out more about the Kindle Personal Document Service.

      Design and Operation of a Portable, Digital Impulse Radar
      Available formats
      ×

      Send article to Dropbox

      To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

      Design and Operation of a Portable, Digital Impulse Radar
      Available formats
      ×

      Send article to Google Drive

      To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

      Design and Operation of a Portable, Digital Impulse Radar
      Available formats
      ×

Copyright

References

Hide All
Brown, C.S. Rasmussen, L.A. Meier, M.F.. 1986 Bed topography inferred from airborne radio–echo sounding of Columbia Glacier, Alaska. U.S. Geol. Surv. Prof. Pap. 1258–G.
Cook, J.C. 1960 Proposed mono–cycle very–high–frequency radar for air–borne snow and ice measurement. Trans. Am. Inst. Electr. Eng., 79(1), 588594.
Cumming, A.D.G. Ferrari, R.L. Owen, G.. 1984 Electronic design and performance of an impulse radar ice–depth sounding system used on the Vatnajökull ice–cap, Iceland. In Miller, K.J. ed. The International Karakoram Project. Vol. I. Cambridge, etc., Cambridge University Press, 111125.
Harrison, C.J. 1970 Reconstruction of subglacial relief from radio echo sounding records. Geophysics, 35(6), 10991115.
Jacobel, R.W. Anderson, S.K.. 1987 Interpretation of radio–echo returns from internal water bodies in Variegated Glacier, Alaska U.S.A. J. Glaciol., 33(115), 319323.
Jacobel, R.W. Raymond, C. 1984 Radio–echo sounding studies of englacial water movement in Variegated Glacier, Alaska. J. Glaciol., 30(104), 2229.
Jezek, K.C. Thompson, L.G.. 1982 Interpretation of monopulse ice radar soundings on two Peruvian glaciers. I.E.E.E. Trans. Geosci. Remote Sensing, GE–20(3), 243249.
Jones, F.H.M. Unpublished. Digital impulse radar for glaciology: instrumentation, modelling and field studies. (M.Sc. thesis, University of British Columbia, 1987).
Jordan, E.C. Balmain, K.G.. 1968 Electromagnetic waves and radiating systems Engelwood Cliffs, NJ, Prentice–Hall Inc.
Narod, B.B. Clarke, G.K.C.. 1983 UHF radar system for airborne surveys of ice thickness. Can. J. Earth Sci.,20(7), 10731086.
Prager, B.T. Unpublished. Digital signal processing of UHF radio–echo sounding data from northern Ellesmere Island. (M.Sc. thesis, University of British Columbia, 1983)
Rose, G.C. Vickers, R.S.. 1974 Calculated and experimental response of resistively loaded V antennas to impulsive excitation. Int. J. Electron., 37, 261271.
Shen, L.C. King, R.W.P.. 1965 Correction to the cylindrical antenna with nonreflecting resistive loading by Wu and King. IEEE Trans. Antennas Propag., AP–13(6), 998.
Sverrisson, M. Jóhannesson, Æ. Björnsson, H.. 1980 Radio–echo equipment for depth sounding of temperate glaciers. J. Glaciol., 25(93), 477486.
Walford, M.E.R. Kennett, M.I. Holmlund, P.. 1986 Interpretation of radio echoes from Storglaciären, northern Sweden. J. Glaciol., 32(110), 3949.
Watts, R.D. England, A.W.. 1976 Radio–echo sounding of temperate glaciers: ice properties and sounder design criteria. J. Glaciol., 17(75), 3948.
Watts, R.D. Wright, D.L.. 1981 Systems for measuring thickness of temperate and polar ice from the ground or from the air. J. Glaciol., 27(97), 459469.
Wu, T.T. King, R.W.P.. 1965 The cylindrical antenna with non–reflecting resistive loading. IEEE Trans. Antennas Propag., AP–13(3), 369373.

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed