The depth of penetration is also determined by the ground penetrating radar antenna used. The GPR image shows that the condition of the graves are very distinct (more recent internments). The soils at this site were very sandy and the caskets produced distinct anomalies. The GPR profile and cross-sectional diagram (below) shows several gravesites (caskets) detected using GPR. conducts ground penetrating radar surveys for locating unmarked gravesites and confirming marked gravesites at cemeteries. How Ground Penetrating Radar Locates Unmarked Graves at Cemeteries The output signal voltage peaks are plotted on the GPR profile as different color bands by the digital control unit. The control unit registers the reflections against two-way travel time in nanoseconds and then amplifies the signals. The antenna then receives the reflected waves and stores them in the digital control unit. The transmitted energy is reflected from various buried objects or distinct contacts between different earth materials. The GPR antenna (transducer) is pulled along the ground by hand or behind an ATV or a vehicle. Ground penetrating radar (ground radar) operates by transmitting pulses of ultra high frequency radio waves (microwave electromagnetic energy) down into the ground through a transducer (also called an antenna).

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