  A stepped frequency ground penetrating radar (GPR) system is used for
detecting objects buried under high permittivity soil. Different intermediate
frequency bandwidth (IFBW) of the mixing receiver is used and measurement
results are compared. It is shown that the IFBW can affect the system's
signal-to-noise ratio (SNR). Experimental results show that objects of
different materials can clearly be detected when the appropriate IFBW is used.
