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<!DOCTYPE html>
<html>

<!--------------------------------------------------------------
-- file    : kalman.html
-- purpose : Page for website Piet Lammertse
----------------------------------------------------------------
--   history :
--     2025-11-26 new
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<head>
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  <link rel="stylesheet" href="plammertse.css">
  <title>  Piet Lammertse on Kalman filters  </title>
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<body>

<ul>
  <li> <a href="index.html">          Home            </a> </li>

  <li> <a href="kalman.html"> Kalman filters          </a> </li>
</ul>


<!------------------------------------------------------------->
<h2> Kalman filters </h2>

<h4> measurement versus control </h4>

<p>
- optimal control.
</p>
<p>
- separation principle.
</p>
<p>
- state propagation and state reconstruction.
</p>
<p>
- model errors (&hairsp;faulty a priori knowledge&hairsp;),
like the mass of an object.
</p>
<p>
- unknown "external" inputs, like gusts of wind
 (&hairsp;or like friction forces
 if you don't consider them modelling errors).
</p>
<p>
- measurement errors.
</p>
<p>
- one day, put memo PL-00-088 here.
</p>
<p>
- describe what the SAX document is about.
</p>

<!--------------------------------------------------------------->
<hr>
<p> <i> PDF&hairsp;'&hairsp;s : </i> </p>
<p> &emsp;
 <a href="PDF/lammertse_1995_SAX_kalman_no_gyro.pdf">
    SAX Kalman filter tuning no-gyro mode, 1995 </a>
</p>

<!------------------------------------------------------------->
<br> <br>
<div class="footer"> P. Lammertse,  \2025 </div>

</body>
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