Building Track Maps from GPS or Yaw/G

DA1 datalogger

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RickS
GEMS Engineer
GEMS Engineer
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Building Track Maps from GPS or Yaw/G

Post by RickS » Wed May 21, 2014 1:08 pm

For many data analysis tasks, a map of the track or stage is a valuable commodity. In order to construct a track map, there are some of prerequisites in terms of the channels you will require. The first of these is that you'll probably need a distance channel.

If you are generating a GPS map, you'll need latitude and longitude channels. You should ensure that these channels have their units correctly specified, because they need to be internally converted to radians. The analysis software currently expects latitudes and longitudes that are referenced to the WGS-84 datum. Typically, commercial GPS units will provide coordinates with such a reference (and generally, they also use EGM-96, which gives Mean Sea Level altitudes, though that is not an issue here).

GPS track maps have the benefit that they can be exported to KML format for viewing in applications such as Google Earth.

A distance channel is not explicitly required for GPS track maps, though it is useful for being able to display your position on the track. See the Distance Channel section of the GDA (Pro) manual on how to set this up using the ‘maths’ functions.
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TrackMapsGPS.docx
Track/Stage Maps
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