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Ticket #1428 (closed defect: duplicate)
multiple log files for 1 flight (paraglider + landing detection)
| Reported by: | poppali1 | Owned by: | |
|---|---|---|---|
| Priority: | normal | Milestone: | XCSoar 6.3 |
| Component: | Logger | Version: | 6.1 |
| Keywords: | Cc: |
Description
Hi, today XCSoar made for me 4 log files for 1 flight. I observed that when I had the ground speed near zero, XCSoar feels that I have landed and after that feels like I started again. I think in that points it splits the log files.
If you could see the automatic landing detection for paragliders.
Attachments
Change History
comment:1 Changed 21 months ago by Turbo
- Milestone changed from XCSoar 6.x @ Android to XCSoar 6.1.x
comment:2 Changed 21 months ago by RobD
Turbo, here's what the IGC tech spec gnss says about ending an IGC file (note the "10 minutes" and "20 fixes" condition). Contrasting to the spec, my CAI302 stops logging about 15 seconds (4 fixes) after the ship stops moving on the ground.
Appendix 1:
1.1.1.1 Thresholds for starting and stopping recording, also Power-on Protocol for creating new IGC files. The following thresholds before fixes are recorded have been found suitable in the past: lat/long change, 10-15 km/hr; pressure altitude change, 1 metre per second for 5 seconds. Pre-takeoff and after-landing baselines of at least 20 fixes must be provided.
The IGC file shall be ended after one of the following three conditions: (1) if no horizontal or vertical movement has been detected for 10 minutes (thresholds as in 1.1.1.1 above); (2) after the recorder is switched off by deliberate action, or; (3) if the recorder is still powered after the flight, when the user establishes a connection for purposes of downloading from the recorder.
comment:3 Changed 21 months ago by Turbo
Well... these are the rules of the International GLIDING Commission. They suite us fine for gliders but for paragliders these rules are too strict apparently. I don't know yet how to handle this situation properly, but there certainly is a need for adjustment when flying paragliders...
comment:4 Changed 19 months ago by Turbo
- Summary changed from multiple log files for 1 flight to multiple log files for 1 flight (paraglider + landing detection)
- Milestone changed from XCSoar 6.1.x to XCSoar 6.3
comment:5 Changed 19 months ago by gkonrad
We are very slow with paraglider, so our speed is often lower than 5km/h for many seconds typically when we are flying above a slope.
The logger starting rule is correct, but it should be ON until we stop it manually.
I suggest you to change the choices of the "auto. logger" parameter to "off/on/start only" in the "setup system/logger" panel. If I choose the "start only" option the logger should only stop when I push "logger stop" button or I close the XCSoar software.
Could you please try to create a raw/NMEA log of such a flight and attach it to this ticket? You can activate the raw logger from the config menu (third page) and will find a file with the file ending .nmea in the logs folder at the end.