why unscented kalman filter changes the results of unrelated blocks?

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Ahmad Momani
Ahmad Momani 2020-2-3
I am trying to use unscented kalman filter to represent human pilot processing of sensory information. i am using a simple aircraft model K/s (motion model) and a delay to represent visual processing (sensor model). the motion model and sensor model give reasonable results before adding kalman filter, but there results blow up after adding kalman filter. i am not sure how kalman filter can affect the results of systmes not related to it. attache below some pictures and the model.
Before adding kalman filter
Capture1.JPG
---------> results of the motion model
untitled.jpg
After adding kalman filter
Capture2.JPG
---------> results of the motion model
untitled2.jpg
--------> unscented kalman filter parameters
kf.JPG

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