User's Manual

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The GPR4 Record
tab also has buttons for saving the B-scan image and generating a short
report . The image can be saved as a PNG, BMP, or JPG file. The report will be saved as a
PDF file, and will contain the survey metadata and the B-scan image.
7.2.2 Digitizer Settings
The default settings for the digitizer are sufficient for nearly all surveys. Advanced users
may choose to change these settings (see Figure A2). To view or change the digitizer settings,
select (File, Settings).
1. Trace Sample Rate
Select the desired number of traces per second. Using fewer traces
per second gives a higher signal to noise ratio and increased depth of investigation.
However fewer traces per second will result in fewer traces per foot (meter) at a given
traverse speed. Use 10 traces/s for the RABIT.
2. Sample Rate Select the sample rate used for each A-scan. Normally a sample rate of 8
GHz is used for antennas with center frequencies less than 1 GHz, and 16 GHz is used
for antennas with center frequencies greater than 1 GHz. Use 8 GHz for the RABIT.
Figure A1. The plot configuration dock.