Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

No FCB File Exist #2

Open
MertBezcioglu opened this issue Jan 2, 2020 · 8 comments
Open

No FCB File Exist #2

MertBezcioglu opened this issue Jan 2, 2020 · 8 comments

Comments

@MertBezcioglu
Copy link

I'm trying to a process with PPP-AR mode. I put the FCB file I downloaded from here (https://github.com/FCB-SGG/FCB-FILES) or the jxfXXXXX.fcb file I downloaded with the net_diff program in the P1C1 DCB line. But on both of them the program gives "No FCB File Exist" error. At which stage or where am I making a mistake?

@YizeZhang
Copy link
Owner

Hi, the FCB products generated by Wuhan University is currently not supported by Net_Diff. Only the cnt*****.bia by CNES and jxf*****.fcb by JAXA is supported. For the CNES products, you need to download cnt*****.bias file on the GNSS BSX line (P1C1 DCB file is optional). For the JAXA products, you need to download both the jxf*****.fcb file on the FCB line and the ****.bsx file on the GNSS BSX line. All these can be done by just click the DOWNLOAD button. Personally, I suggest to use the CNES products.

@MertBezcioglu
Copy link
Author

Thank you for kindly reply and support, it worked. When I check the results, I see that the Kinematic PPP-AR mode supports only GPS and GPS+GLONASS combinations. Because there is no difference between GPS and GPS+GALILEO or GPS+GLONASS and GPS+GLONASS+GALILEO results. Am I wrong?

@YizeZhang
Copy link
Owner

If you are using jxf products, then there is only GPS and GLONASS orbit and clock information(but only support GPS PPP-AR). If you are using CNES products, it supports GPS+GLONASS+BDS+Galileo.

@MertBezcioglu
Copy link
Author

I used the cnt*****.sp3/clk/bia files for the Kinematic PPP-AR solution but i got the " no reference satellite found" message for GALILEO in the log file.

@YizeZhang
Copy link
Owner

I test it again using IGS station, the result is normal and there is no such error information for Galileo. So I think maybe it is due to the problem of data? Could you send me your data through email?
Besides, for PPP-AR, the precision BDS corrections are not so accurate. So currently it is not recommended to use BDS in PPP-AR, or at least don't use BDS GEO satellites.

@YizeZhang
Copy link
Owner

YizeZhang commented Jan 8, 2020

Hello, I check your data. The RINEX data format is 2.11, and the Galileo data type is E1 and E5 (not E5a). I'm sorry that Net_Diff currently only supports E1+E5a for Galileo in RINEX 2.XX format.
If you want to process E5 data, (1) you should use the RINEX 3.XX format; (2) Please select the Mix option on the Frequency popup-menu and then choose the corresponding frequency for each system.

@YizeZhang
Copy link
Owner

Hello, FCB file from WHU (ftp://igs.gnsswhu.cn//pub/whu/phasebias/year/bias/) is supported now.

@MertBezcioglu
Copy link
Author

Hello, Thank you for your information. This is really good news. It will be very useful as soon as they support multi-GNSS.

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Labels
None yet
Projects
None yet
Development

No branches or pull requests

2 participants