Level 1 LiDAR surface elevation contains data in swath and center line formats in the following folders:
[GPS DATA: /AGAP/Datalevel_1/LIDAR/GPS/ATTITUDE/]
This folder is divided into a number of subfolders according to survey lines. The survey lines have the following naming convention:
fl### Flight lines arranged according to flight numbers. ‘a’ and ‘b’ refer to the two segments of flightlines. Together, they form one complete flight line to and from Dome A and AGAP South camp. This data is a profile along the center of the swath data and does not necessarily represent the nadir points.
The centerline data are provided in excel spreadsheets that have the following variable:
|X||Lambert Conformal Conic X axis in km|
|Y||Lambert Conformal Conic Y axis in km|
|Elev||Ellipsoidal elevation (m)|
|Flight number||Flight number|
Swath data set:
These are arranged in directories that follow the naming convention of the flightlines. Each file is a 10 minutes segment of the entire flightline. These are matlab files that contain the swath data.
The naming convention follows:
Warning: These are ellipsoidal elevation data, user will have to correct for the geoid to get the actual elevation.
The variables in each of the file segments are:
|ConversionInfo2DD||This contains information about the lidar parameters that were set for recording the data. 2DD files are the lidar raw data files.|
|ConversionInfoSGL||Sanders Geophysics processed the GPS files provided with this data set. The GPS informations are provided in this variable.|
|ProcessingInfo||Information about the calibration coefficients used to process the dataset.|
|Pc_latitude||Latitude in WGS84|
|Pc_longitude||Longitude in WGS84|
The other variables are intermediate variables from processing.
Please note: The GPS files to be used is located in: