Perfect straight line without MMA, slight oscillation with MMA

Hello,

I haven’t try: I was hoping that some trick on the directions parameters could improved the situation. But I think you are right, the only way to trying to solve the issue is the filter. But I haven’t any knowledges on the Kalman filter so I have to learn about before trying to modified the parameters. Or first trying to make the slope filter before the Kalman more restrictiv.

But at the first step I will try to improse the fixing of my box and adding foam or bumper below to see if that can filter some frequency.

I don’t think: if the antenna height in AOG doesn’t correspond to the real antenna height, the tilt correction is going to be wrong.

Math