Review Of The Comparison Test Of Short Pulse And Synthetic Pulse Ground Penetrating Radars At The Dahlonega Test Site

This poster session combines two related projects that ENSCO, Inc. has been involved in<br>during the past year. These projects are concerned with the ability to detect rather large<br>underground voids or targets at considerable depths in the complex geology.<br>The two related projects are:<br>1) The development of the Dahlonega Test Site (DTS) which is located in Northeast<br>Georgia, and<br>2) Our side-by-side comparison tests of the short pulse GSSI SIR-10 system with the<br>ENSCO developed synthetic pulse prototype system.<br>The synthetic pulse system is based on a stepped frequency concept as contrasted with the<br>impulse radar type. The rationale is that the synthetic pulse system allows the operator the ability<br>to “build” a time domain pulse with more effective energy than can be achieved by the conventional<br>short pulse (impulse) type system.<br>Other considerations include the increased emphasis on the higher frequencies (by the<br>potential of increasing the energy of these frequencies) thereby increasing the target resolution, and<br>avoiding those frequencies which may be detrimental to a nearby communication system, for<br>example.<br>As part of this poster session we will illustrate the DTS and its unique features, and then<br>follow this with our strategy in making our comprehensive comparison of the two ground<br>penetrating radar systems which we were evaluating.