Gimbal and Airtcraft Attitude mismatch in MSDK5

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Lorenzo Lucignano

• 2024年10月10日 17:22

Hello,

I'm using Mobile SDK5 for a M30T and I noticed that the values for the yaw returned by KeyAircraftAttitude and KeyGimbalAttitude are different by ~20 degrees even when KeyYawRelativeToAircraftHeading returns a value close to 0. If I understand correctly the documentation, they should return the same value, 0 when pointing north.

I tried to calibrate the gimbal, but it has no effect. In the DJI Pilot app, the compass UI shows that they are pointing in the same direction, but I guess that's becuase the widget uses KeyAircraftAttitude and KeyYawRelativeToAircraftHeading.

I would like to know if this is a known bug, and expected difference due to two different sensor system and what you suggest to do.

Thanks

 

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  DJI Developer Support

  • 2024年10月11日 04:06

  Dear developers, Hello, thank you for contacting DJI Innovation. Have you tried to calibrate the head and this phenomenon still exists? Did the problem arise after the plane took off? I hope our solution can help you, thank you for your email, wish you a happy life! Best Regards, Dji innovation SDK technical support

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  Lorenzo Lucignano

  • 2024年10月11日 05:34

  You mean calibrate the gimbal? The gimbal was calibrate just before taking off and the problem persists both during flight and after landing.

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  DJI Developer Support

  • 2024年10月11日 08:07

  Dear Client Thank you for contacting DJI. If the situation you are experiencing is not occurring in a simulator environment, you may refer to this article:How to collect the gimbal's orientation？ There are actually discrepancies between the gimbal attitude and the aircraft attitude due to differences in coordinate systems. Kindly Regards, DJI Developer Support

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  Lorenzo Lucignano

  • 2024年10月11日 08:33

  I suggest to put those istructions in the documentation, also because some of the keys referred in the article are not documented.

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  DJI Developer Support

  • 2024年10月11日 08:44

  Dear Client Thank you for contacting DJI. Ok, thank you for your feedback Kindly Regards, DJI Developer Support

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