...The GUI includes GPS datalogging capability assuming a receiver providing NMEA sentences at 4800 bauds is connected to the host computer. Because the software requires access to the raw socket communication, it must be run with administration (root) privileges. A dedicated mode for sensor reading through the wireless GPR link is implemented through 2 separate time-windows, one for subsurface structure analysis and the other for sensor signal recording. The wiki describes the cause of long term drift and hardware modification of the ProEx timing board to try to solve the issue.
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