Author Topic: Course.Speed  (Read 1190 times)

mrinkel

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Course.Speed
« on: April 03, 2012, 03:08:39 pm »
Is it in MPH or knots or ?

Thanks,
Mark

Roman Novgorodov

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Re: Course.Speed
« Reply #1 on: April 04, 2012, 03:04:04 am »
Hello

According NIMEA specification:

Course.SpeedN is speed in knots;
Course.Speed is speed in km/h

Roman Novgorodov
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mrinkel

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Re: Course.Speed
« Reply #2 on: April 04, 2012, 01:51:14 pm »
Thanks for the info.  I tested the demo project with my GPS device, but the speed is always reporting 0 when I am moving.  I tested the same GPS device in Mappoint, and I get a reliable speed.

I took a look a the GPS sentences from the device and I do see speed indicated in the GPRMC sentence:

$GPRMC,132843.000,A,3754.7776,N,12220.7196,W,0.14,56.74,040412,,,A*4B


Roman Novgorodov

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Re: Course.Speed
« Reply #3 on: April 05, 2012, 09:33:54 am »
Hello

GPRMC returns speed in knots only.  Please check SpeedN value in event (demo shows only Speed in km/h) .

For speed in km/h your GPS device should provide GPVTG sequence.

Roman Novgorodov
DeepSoftware LLC
DeepSoftware llc - The professional components for Delphi/CBuilder/.NET. The high quality custom software development.
Forums.nrCommLib.Com - DeepSoftware Tech Support Forum.