Magellan DirectRoute 3.0 Bedienungsanleitung PDF herunterladen (Seite 37)

The

For-

mats

Merging into IGC format

A route stored in another format can be merged with an existing IGC file that has no task declaration, to

generate a new IGC file with a task declaration:

gpsbabel -i igc -f myflight.igc -i gpx -f myrte.gpx -o igc -F mynew.igc

A two dimensional (lat/lon) track recorded during a flight by a GPS receiver can be merged with a one

dimensional (altitude) track recorded during the same flight by a barograph instrument. The result is a

three dimensional IGC file representing the flight:

gpsbabel -i gpx -f baro.gpx -i igc -f my2D.igc -o igc -F my3D.igc

The same can be acheived by downloading directly from a barograph instrument supported by GPSBabel.

For example with a Brauniger IQ Comp GPS variometer:

gpsbabel -i baroiq -f /dev/ttyS0 -i igc -f my2D.igc -o igc,timeadj=auto

-F my3D.igc

or:

gpsbabel -i baroiq -f com1 -i igc -f my2D.igc -o igc,timeadj=auto -F

my3D.igc

(Documentation contributed by Chris Jones, Aug 2004)

timeadj option

(integer sec or 'auto') Barograph to GPS time diff.

Sometimes there is a discrepancy between the internal clock in the barograph instrument and GPS time

which can result in the altitude and ground positions not correlating correctly. This can be corrected man-

ually by passing the time difference in seconds between the two time domains through the "timeadj" pa-

rameter. This can be any positive or negative integer:

gpsbabel -i gpx -f baro.gpx -i igc -f my2D.igc -o igc,timeadj=27 -F

my3D.igc

GPSBabel can also attempt to deduce the time difference automatically. This is done by comparing the

time that it thinks that you landed on the GPS track and the barograph and adjusting accordingly:

gpsbabel -i gpx -f baro.gpx -i igc -f my2D.igc -o igc,timeadj=auto -F

my3D.igc

Franson GPSGate Simulation (gpssim)

This format can...

• write waypoints

1 2 ... 32 33 34 35 36 37 38 39 40 41 42 ... 129 130

Keine Kommentare

Magellan DirectRoute 3.0 Bedienungsanleitung Seite 37