aaronboda24 / loose-gnss-imu Goto Github PK

Hi， I am shengkai, i am very interested on your fusion code. But there has little part made me confuse. In the GPS input file, what is the COV PV xyz? how to get it ?

Dear author, I don't understand why you don't apply GNSS data calculation in standard RINEX format. I don't know how to generate your data format?

Hi! Thanks for the open source. Can you please tell which tool you used to generate these graphs? is it from c++ code or some python script cz your code doesnt have the plotting code.

Thanks
gj

Good job,man! I appreciate your work, you give a whole process about loose coupled data fusion. Can you tell me how do you draw the result picture? Is there any script that can draw the pics? Waiting for your apply : )

Hi,
I am getting a "Segmentation fault (core dumped)" error when I try to run for my data (it is working fine with the example data you have provided). I have printed out the values, my data was read by the reader provided in this package. I don't know much C++, Could you help me get through this?.

Thanks,
cck

Dear Aaron,
Thank you very much for open sourced code.
Could you please upload the data used for the fusion, shown in the jpeg photos.

Thank you very much in advance.

Best regards

Hello，
Is there any paper about your work？ If yes, can you give me a URL or paper name?
Thkan you.

I wanted to test it with my own data.I am a beginner.I don't know how to use rtkLib.So I want to find the input format from the output of my modul support. My modul supports NMEA output and UBX output.
But I only found position, velocity, and 3D accuracy of position and 3D accuracy of velocity from modul outputs, here I want to ask you some questions(I have seen the issue [input format GNSS #1]):
(1) I can't get the variance-covariance of the position xyz components and velocity xyz components.So can I evenly divide the three axes from the accuracy I get?
(2) I can't get covariance either.So I can set 0 to all the covariance? In addition, will this affect a lot?
(3) In issue [input format GNSS #1].you suggestion variance-covariance can assign some constants.Do you have a suggested constant?
(4) Or do you have a suggestion how I can get these values from the NMEA and UBX output?

Looking forward to your reply.
Thank you very much.

Hi

I came accross your gnss-imu fusion solution and wanted to test it out a little with my own data.
I saw the input files and was wondering if you have any more information on what format the GNSS Input file is?
I have can produce .pos files (out of RTKLIB) quite easy, but there are nowhere near the 28 columns you have in your GNSS textfile.

Goam

Hi, this is not much of an use, because there is no documentation / code on GNS input. Usually GNSS comes in in NMEA2000, this code however takes it in XYZ (fair enough it's ECEF), but further data x xy xz y yz z is not explained / has any code how to process this data.

When I running your code there always report this error(in the IMUmechECEF file）, Do you know how to solve it?
Or some new update code?

Thanks for your sharing.
Have a nice day.

Are there any reference textbook for the calculation process in the program (except Paul Groves textbook).