No fixed solution with RTKLIB Kinematic with L1 data while Inertial Explorer has no problem

[DieterLubeck]

I can´t get all quality 1 with RTKLIB/RTKPOST when I postprocess differential single frequency ublox data from a drone flight. The base is very close and Inertial Explorer fixes the whole flight without any problem. I checked all parameters already. The only one which is effecting the result is Min Ratio to Fix Ambiguity. Going from 3 to 1 improves the result, but still not enough for all flights. See RTKPOST plots attached. Regards Dieter

[easyrtk]

Hi Dieter, You should know the meaning/definition of the ratio for ambiguity fixing before you play with the number for Ratio. Wit the decreasing from 3 to 1, you have more chance to get the wrong fix solution. Good luck.  Sent from Mail for Windows 10 From: DieterLubeckSent: Sunday, May 17, 2020 7:44 AMTo: tomojitakasu/RTKLIBCc: SubscribedSubject: [tomojitakasu/RTKLIB] No fixed solution with RTKLIB Kinematic with L1 data while Inertial Explorer has no problem (#535) I can´t get all quality 1 with RTKLIB/RTKPOST when I postprocess differential single frequency ublox data from a drone flight. The base is very close and Inertial Explorer fixes the whole flight without any problem. I checked all parameters already. The only one which is effecting the result is Min Ratio to Fix Ambiguity. Going from 3 to 1 improves the result, but still not enough for all flights. See RTKPOST plots attached.RegardsDieter—You are receiving this because you are subscribed to this thread.Reply to this email directly, view it on GitHub, or unsubscribe. 

[DieterLubeck]

Sure, but any idea why RTKLIB performs not as good as Inertial Explorer with this L1 data?

[CGEOS]

Try to fix using GPS only and keep 3 as ratio

Joel Van Cranenbroeck Mng. Director CGEOS - Creative Geosensing sprl-s www.cgeos.com

Le 17 mai 2020 à 16:44, DieterLubeck notifications@github.com a écrit :

 I can´t get all quality 1 with RTKLIB/RTKPOST when I postprocess differential single frequency ublox data from a drone flight. The base is very close and Inertial Explorer fixes the whole flight without any problem. I checked all parameters already. The only one which is effecting the result is Min Ratio to Fix Ambiguity. Going from 3 to 1 improves the result, but still not enough for all flights. See RTKPOST plots attached. Regards Dieter

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[CGEOS]

Also not « continuous » but fix and keep fixing ...

Good luck

Joel Van Cranenbroeck Mng. Director CGEOS - Creative Geosensing sprl-s www.cgeos.com

Le 17 mai 2020 à 16:44, DieterLubeck notifications@github.com a écrit :

 I can´t get all quality 1 with RTKLIB/RTKPOST when I postprocess differential single frequency ublox data from a drone flight. The base is very close and Inertial Explorer fixes the whole flight without any problem. I checked all parameters already. The only one which is effecting the result is Min Ratio to Fix Ambiguity. Going from 3 to 1 improves the result, but still not enough for all flights. See RTKPOST plots attached. Regards Dieter

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[DieterLubeck]

Thanks for the hint. I tried but I could see only a very small improvement...

[CGEOS]

Did you enter properly the coordinates of the Base Station ? And if you select to extract them from the RINEX header file, please double check the coordinates is right ...

Prof. Joël van Cranenbroeck

Managing Director CGEOS - CREATIVE GEOSENSING SPRL Rue du Tienne de Mont, 11 at 5530 MONT, YVOIR Belgium - EUROPE

Tel +32 81 41 36 57 Mobile +32 474 98 61 93 Web site : www.cgeos.com

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Le mer. 20 mai 2020 à 14:02, DieterLubeck notifications@github.com a écrit :

Thanks for the hint. I tried but I could see only a very small improvement...

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[DieterLubeck]

Sure, I had double checked already.

[yydgis]

if you can share the data, I can have a quick check for you. yydgis@gmail.com