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The Radar Data Acquisition (RDA) is a real-time Windows 2000 based data collection software application designed for IRIS GPR systems. The versatility of the RDA software completely eliminates the need for external display devices and allows viewing of digitized radar signals during the radar system setup and while collecting up to 6 simultaneous channels of GPR data in the field. Data acquisition parameters are software programmable and permit the adjustment of the signal sampling rate, sampling time and the number of radar data channels to be digitized. The RDA software acquires and stores GPR data in real-time to the ACPRO data acquisition system hard disk in user defined data files. Data acquisition is continuous and virtually unlimited in distance. The software control panel and properties functions have numerous features for adjustment of display settings, including signal gain, DC offset and timebase. Also included in the RDA module are calibration functions for GPR time base and distance measuring instrument (DMI), and utilities for acquiring free space and flat metal plate signals for use in data analysis. In addition, real-time signal enhancement functions, such as Penetradar’s patented "Clutter Cancellation", random noise suppression, surface decorrelation, signal filtering and echo alignment, can be selected to improve overall signal quality. A real-time layer thickness measurement function is also included for analysis of individual waveforms or for back calculation of dielectric constant. Voltage and time cursors can be utilized for measurement of signal peak-to-peak voltage or the time difference between two signals of interest. An event marking feature is also provided to allow the user to designate different events or log locations of interest during data collection. The marked events, saved in a text file, are also time stamped and tagged with the DMI readings for later use.
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