IceSat-2 to LAS

Data Manipulation form, Import

Uses IceSat-2 CSV photon files from http://openaltimetry.org/

Set the options (which beams to use, the minimum confidence in the point to use it).

Select one or more CSV files; the XML file must also be present to get all the information such as the beam.  A single LAS file will be created.

• Create point type 1, with the following fields:
  • PointSourceID : track, single value for the entire track (word)
  • GPSTime : date, noon of the day the track was acquired, single value for the entire track (float)
  • Classification : Confidence; 20-24 (the confidence plus 20, so it is not interpreted as a standard category
  • UserData : beam, single value for the entire track (byte)
    • GT1R = 1
    • GT1L = 2
    • GT2R = 3
    • GT2L = 4
    • GT3R = 5
    • GT3L = 6
• Z values shifted to the geoid from the ellipsoid using the NGA transform files
• Restricted to selected confidence codes
• Removes lines that are identical, of which there are a significant number

A CSV file will also be created; the name of the file will have the data, track, and beam name, and those will be in fields in the CSV.  This can be turned into databases.

Last revised 4/29/2020