How to model Bias Instability drift in Matlab

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fadi josef 2021-4-6

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https://ww2.mathworks.cn/matlabcentral/answers/794267-how-to-model-bias-instability-drift-in-matlab

评论： fadi josef 2021-4-9

I would like to ask about modelling the Bias Instability drift in Matlab, it is seen in the Navigation toolbox reference (page 404) that it is modeled as white noise biased and then filtered.

It would be really nice if someone could help me understand the concept of this model.

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Answer 1

Ryan Salvo 2021-4-8

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https://ww2.mathworks.cn/matlabcentral/answers/794267-how-to-model-bias-instability-drift-in-matlab#answer_670507

Hi Fadi,

The model for the IMU, including the bias instability, can be found the Algorithms section of the imuSensor reference page.

Thanks,

Ryan

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fadi josef 2021-4-9

Hi Ryan,

Thanks for your comment, I have checked this in the imuSensor reference page where they write:

The bias instability drift is modeled as white noise biased and then filtered:

β1=h1∗(w)(BiasInstability)

But in reality I am trying to understand this model, I have tried to know the basics of this model but till now I didn't know on which stochastic Error Model this definition is based.

I tried to check if it is based on Gauss-Markov model but I didn't obtain the same equations.

Can you please help me understand this.

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