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Can use filter for drone?

Open Userpc1010 opened this issue 4 years ago • 5 comments

This Kalmon filter algorithm can help improve the accuracy of GPS data on the drone, for example, fill in the gaps between GPS updates 5 to 90Hz? If use data from: GPS velocity vector NED, position and Boch BNO080 linear acceleration, quaternion absolute orientation resistant to acceleration and vibration on an aircraft, can expect an increase in accuracy GPS position?

Userpc1010 avatar Dec 25 '20 17:12 Userpc1010

Hello there :). Sure, it will imrove accuracy of GPS data. Any I believe you can also get sigmas from documentation to your accelerometer and update model. But maybe your dron's flight controller already has good characteristics?

Lezh1k avatar Jan 01 '21 09:01 Lezh1k

I intended to use a filter for a DIY flight controller. Sigmas if I understand correctly this is a characteristic of the accelerometer's accuracy? If yes, then the accuracy of linear acceleration is more dependent on vibration and calibration sing the error of subtraction the gravity vector of acceleration data is higher than own noise accelerometer, maybe it makes sense to leave it as before?

Userpc1010 avatar Jan 01 '21 11:01 Userpc1010

Sigma is a standard deviation of accelerometer. You can calculate it yourself, but very often you can find this information in manual.

Lezh1k avatar Jan 09 '21 01:01 Lezh1k

Is it possible to use the horizontal position accuracy estimate (UBX nav-pvt) for the filter rebuildR (k, posDev) if translate it into meters?

Userpc1010 avatar Jan 14 '21 20:01 Userpc1010

I guess you need another model for this.

Lezh1k avatar Jan 15 '21 06:01 Lezh1k