Changes between Version 4 and Version 5 of Processing/OptechGalaxy2000Procedure


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Timestamp:
Aug 10, 2024, 3:16:22 PM (6 weeks ago)
Author:
wja
Comment:

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  • Processing/OptechGalaxy2000Procedure

    v4 v5  
    11112. Create a new project and save under the flight day processing/lidar/ directory. Make sure the "project" is in a projected coordinate system (e.g. UTM) and the "output" is a supported projection. There is a known bug when setting projection frames, and sometimes the program freezes - in this case need to wobble the reference frame window.
    12123. Create an instrument and open the sensor RES file and LCP file (located in the ~arsf/calibration tree). Make sure to use the version 4.5 (or allow it to convert from 4.4 to 4.5)
    13 4. Add a mission to the project. This takes the post-processed SBET from PosPac and SurveyRange (raw lidar) file. Note it's possible to create multiple missions per project. For trajectory select "is already processed". The digitiser type (if used) is IW4. Can use meterological data if available - this is an ASCII file with a time, temperature and air pressure. Usually do not use this. The Trajectory report tab within the mission shows details of the flightlines.
     134. Add a mission to the project. This takes the post-processed SBET from PosPac and SurveyRange (raw lidar) file. Note, not only is the SBET file needed from PosPac, but the "smrmsg_xxx.out" file, which should be in mission/Extract within the project files. Note it's possible to create multiple missions per project. For trajectory select "is already processed". The digitiser type (if used) is IW4. Can use meterological data if available - this is an ASCII file with a time, temperature and air pressure. Usually do not use this. The Trajectory report tab within the mission shows details of the flightlines.
    14145. On the mission, there should be a selection of tabs, click the lidar lines tab which gives an overview of the lines. Select the area to process (use the +Polygon button), and then add the lines to the project (the >>> button followed by the tick). This should now have  a list of lines added on the left hand panel.
    15156. For refined processing we need to add a block (for the block adjustment). Before doing this, ensure any cross lines are selected as "cross" rather than "production" (in the lines section).