# \[Bug\] Error in Kalman filtered output

**URL:** <https://get-help.theconstruct.ai/t/bug-error-in-kalman-filtered-output/37923>\
**Category:** Kalman Filters\
**Created:** [September 5, 2025, 11:15am UTC](https://get-help.theconstruct.ai/t/bug-error-in-kalman-filtered-output/37923 "2025-09-05T11:15:02Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![soren.rusbjerg](https://get-help.theconstruct.ai/letter_avatar_proxy/v4/letter/s/f14d63/32.png) [@soren.rusbjerg](https://get-help.theconstruct.ai/u/soren.rusbjerg)\
**Post date:** [September 5, 2025, 11:15am UTC](https://get-help.theconstruct.ai/t/bug-error-in-kalman-filtered-output/37923/1 "2025-09-05T11:15:03Z")

</div>

This is an error report.

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**Screenshot of the error**

 ![](https://error-imgs.s3.amazonaws.com/error_image_df66584e-3cb5-48fe-b502-a2b0b5c352d8_1757070802939.png)
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**Error details**

Error in Kalman filtered output when running test scripts. It seems to be a 90deg angle differences in robot real movement compared to estimated movement. Seen in EKF and UKF exercises provided.