GSSI SIR 30 Operations Updated: March 23, 2013

Step 1: Create a new project choosing a name for the survey and the SIR30 equipment, then click New Survey

Step 2: Transfer data into the \raw\ folder of the project by: browsing, then searching all the files in the SIR 30 data directory using *.* file type, and then clicking the import button to transfer the data. Windows Explorer can also be used as a substitute.

Step 3: Create the infomain Step 3: Create the infomain.dat containing the names of the multiplexed radargrams and infochannels.dat file which will be the individual de-multiplexed radargram names. Click the extension to *.dzt, GPS survey, set the channel names and the xyz offsets, then click the Import \raw\ button.

Step 4: Highlight the infomain. dat file back in the Edit Info File Step 4: Highlight the infomain.dat file back in the Edit Info File. Choose the kind of navigation for GPS, e.g. GSSI to UTM for no *.tmf files collected, or GSSI Tstamp if *.plt and *.tmf are collected, or GSSI to Nav for total station.

Step 5: Demultiplex the SIR30 radargrams creating. -1. dzt,. -2. dzt, Step 5: Demultiplex the SIR30 radargrams creating *-1.dzt, *-2.dzt, *-3.dzt, *-4.dzt for 4 channel data and write to the \raw\ folder of the project using the SIR30 32 to 16 bit operation. Set the binary head length 131072.

Step 6: Highlight the infochannel Step 6: Highlight the infochannel.dat file, and click Array to Nav for GPS collection to generated the navigation for each individual track based on the channel offsets.

Step 7: Use the GSSI 16 to 16 bit button to open the gaining and conversion menu. Choose a gain curve and then click batch gain-wobble operatioin to remove low freq noise. (Optionally, one can not apply gain and do bandpass filter or regaining in the Filter menu)

Step 8: Display the GPS track to make sure it looks good Step 8: Display the GPS track to make sure it looks good. Plot options labeling may be used to create customized labeling of eastings and northings.

Step 9: Apply the desired navigation Step 9: Apply the desired navigation. In this instance artificial markers are applied equidistantly across the data (without time stamp information from *.tmf).

Step 10: proceed as normal to Search 0ns if desired and the Slice/resample menu. Choose and appropriate resample scans/mark for the resampled radargrams.

From here follow general operations detailed in the main manual From here follow general operations detailed in the main manual. Processes such as radargram editing may also be required for time 0 corrections which are all identified in the main manual for basic operations.