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TSRB
Deployment
- The ship needs to be positioned such that the sun is on the stern for all optics casts. The tethered spectral radiometer buoy (TSRB) is deployed off the stern after the CTD is aboard and secured. The buoy is deployed by throwing it over the stern. Once is in the water the acquisition software is started. The unit consists of a deck unit, laptop computer, and in-water unit. The deck unit and laptop computer will require 110 volt AC power for operation. GPS with NMEA data stream (RS232) is needed for the TSRB deck-unit. The in-water unit is secured to the ship via a 60 meter conducting umbilical. After the buoy is deployed over the stern, the ship needs to steam forward, distancing the ship from the buoy. The TSRB will remain deployed until the deployment and recovery of the PRR is completed. Deployment and operation can be achieved by two people. Deployment and recovery will take approximately 15 minutes.
Data Processing
- Data from the TSRB is processed using the Satlantic data processing software ASCIICON. The ASCIICON software module converts raw TSRB data into standard engineering units and outputs a flat ascii file. The data processing procedure is outlined below.
- Copy files from the TSRB laptop to the PC MooMoo. Files should be copied to c:\pnb\tsrb\asciicon.106\.
- Open a DOS window.
- Change directories to the file containing the TSRB files.
- At the dos prompt type: asciicon tsrb_calfile infile outfile
- The current calibration file is tsrb021f.cal
- infile is the raw data file to be converted. The file will have the form: T`CRUISE_DATE’`STATION’.RAW
- outfile should have the form T`CRUISE_DATE’`STATION’.DAT
- Press Enter
- The program will ask: Convert to physical units (Y/N)? Answer: Y.
- The program will ask: Was instrument immersed during measurements (Y/N)? Answer: Y.
- Repeat this procedure for all files.
- Once all files have been converted, FTP the files to /home/data65/pnb/TSRB/`cruise’
- Once files have been transferred to UNIX via FTP, delete both the *.RAW and *.DAT files from the PC.