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#1
October 7th 03, 09:53 AM
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1 Hz NMEA-logfiles wanted from real soaring flights
I am looking for NMEA-logfiles from real soaring flights with original
1 Hz NMEA output, being interested in the coordinates, track and ground speed. IGC-files are not sufficient because calculating track / speed as well interpolating track / speed / coordinates out from a 0.25 Hz IGC-file results in lower precision. Tnx Andrea.Schlapbach{at}bluewin.ch 
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#2
October 7th 03, 11:32 PM
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Andrea Schlapbach wrote:
IGC-files are not sufficient because calculating track / speed as well interpolating track / speed / coordinates out from a 0.25 Hz IGC-file results in lower precision. IGC log time is dependent on settings in the logger. For example, the next two lines are from a .IGC file. They show a two second interval setting. B1041125216936N01348271EA-002700135115360 B1041145216922N01348319EA-001700145117360 Unfortunately I don't have the time to write a script to filter for these interval times. A massive number of files can be downloaded from online contest sites. OLC 2002 in Germany shows about 5442 files. Gtz, David NL
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#3
October 8th 03, 01:42 AM
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Typically loggers are set to record less frequently because otherwise
the resulting files are "too large" for some scoring programs. Our logger frequency was reduced because of such complaints. Some older popular loggers won't record at 1Hz anyway... Depending on your application, its not too hard to write a smoothing model that will produce decent results. What's your application ? Have you tried interpolation (and with what kind of model) ? Best Regards, Dave "YO" "Andrea Schlapbach" wrote in message om... I am looking for NMEA-logfiles from real soaring flights with original 1 Hz NMEA output, being interested in the coordinates, track and ground speed. IGC-files are not sufficient because calculating track / speed as well interpolating track / speed / coordinates out from a 0.25 Hz IGC-file results in lower precision. Tnx Andrea.Schlapbach{at}bluewin.ch
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#4
October 8th 03, 03:17 PM
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#5
October 8th 03, 04:24 PM
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#6
October 8th 03, 04:38 PM
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You can use GPS_LOG WinCE, put it in raw data logging mode and record
your own data from a flight. You can get the program and all information at http://www.soaringpilotsoftware.com Henryk Birecki In article , says... I am looking for NMEA-logfiles from real soaring flights with original 1 Hz NMEA output, being interested in the coordinates, track and ground speed. IGC-files are not sufficient because calculating track / speed as well interpolating track / speed / coordinates out from a 0.25 Hz IGC-file results in lower precision.
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#7
October 9th 03, 12:30 AM
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ILEC SN10 log files do contain track information, but at .5Hz only.
Best Regards, Dave "Andy Durbin" wrote in message om... (Andrea Schlapbach) wrote in message . com... I am looking for NMEA-logfiles from real soaring flights with original 1 Hz NMEA output, being interested in the coordinates, track and ground speed. IGC-files are not sufficient because calculating track / speed as well interpolating track / speed / coordinates out from a 0.25 Hz IGC-file results in lower precision. Tnx Andrea.Schlapbach{at}bluewin.ch I don't think that what you are looking for is going to be available. While the NMEA data stream may be at 1Hz, and a logger may be set to record at 1Hz, the logger will not record the track and GS data you want. I have lots of 0.5 hz data but it's position and altitude only. Andy (GY)
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#8
October 11th 03, 09:08 PM
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Hi ANdrea,
we have some flights at the server of the onlinecontest.org . Try the following link http://www.onlinecontest.org/olcphp/...c&igc=39rc3d61 you may replace the 39rc3d61 also by the following igc-filename fragments 35uf76v2, 35uf76v1,36janwi1,37ds0ccc,38180021,38ef3126,38qpa aaj,393f7kh1,39d30923, or 39rc3d61 Best Regards Hans "Andrea Schlapbach" schrieb im Newsbeitrag om... I am looking for NMEA-logfiles from real soaring flights with original 1 Hz NMEA output, being interested in the coordinates, track and ground speed. IGC-files are not sufficient because calculating track / speed as well interpolating track / speed / coordinates out from a 0.25 Hz IGC-file results in lower precision. Tnx Andrea.Schlapbach{at}bluewin.ch
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