Inertial Measurement Unit - how to get position and trajectory ?

[Mr_J]

Hi,

I've got a IMU microstrain 3DM-GX4-25. I'd like to be able to, first, reconstitute the trajectory quite accuratly. I have no experience in inertial navigation so i'm looking for documentation and advices.

I've found several drivers about 3DM-G... devices from microstrain but no driver for 3DM-GX4. (I'm interested in it if some of you have it.) I didn't find anything about trajectory reconstitution from IMU.

Any answer will be very appreciated so don't hesitate.

Best regards,

Mr_J

[DanAmbrosio]

Mr_J,

I am working on gettting out an example for my 3DM-GX4-45 library but currently do not have it finished. I attched a link to my library if you want to use it. Currently it is designed for the GX4-45 but should owrk for the 25. Be sure to only use functionality from the 25 as I do not know how the sensor will respond if you send it an command that is not in its firmware.

Let me know if you have any questions.

https://drive.google.com/file/d/0B99iLsGVluc5VVNfSEFTQjVSWm8/view?usp=sharing

[Mr_J]

Hi,

thank you, I'll take a look at your project very soon. I made the complex example working from the library provided by Microstrain for 3DM-GX3. I'll post it as soon as possible so you can have a look at it (even if it's still under construction).

we keep in touch

[Mr_J]

Here is the project

https://drive.google.com/folderview?id=0Bz6pBjAvbNxQRDBqYlpqR3dvM2M&usp=sharing

it's working for the base command set, all AHRS datas (see attached files) and some NAV Data (only for estimated acceleration, est. euler and est Quaternions until now).