A study was undertaken to determine the sensitivity of a ground probing radar (GPR) system. A review of the literature showed that an interface caused by a small contrast in densities resulted in a minimum amount of power from a transmitted signal being reflected. The following laboratory study revealed that the minimum amount of this power reflected is capable of causing a printable signal. It is these signals that cause difficulty in distinguishing the desired target in a GPR survey. Thus, the GPR system is often too sensitive for many applications, and it is suggested that some type of signal enhancement be considered for the system.
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