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comparison m-toolbox/html_help/help/ug/ltpda_training_topic_4_4.html @ 0:f0afece42f48
Import.
| author | Daniele Nicolodi <nicolodi@science.unitn.it> |
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| date | Wed, 23 Nov 2011 19:22:13 +0100 |
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| 1 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" | |
| 2 "http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd"> | |
| 3 | |
| 4 <html lang="en"> | |
| 5 <head> | |
| 6 <meta name="generator" content= | |
| 7 "HTML Tidy for Mac OS X (vers 1st December 2004), see www.w3.org"> | |
| 8 <meta http-equiv="Content-Type" content= | |
| 9 "text/html; charset=us-ascii"> | |
| 10 | |
| 11 <title>How to filter data (LTPDA Toolbox)</title> | |
| 12 <link rel="stylesheet" href="docstyle.css" type="text/css"> | |
| 13 <meta name="generator" content="DocBook XSL Stylesheets V1.52.2"> | |
| 14 <meta name="description" content= | |
| 15 "Presents an overview of the features, system requirements, and starting the toolbox."> | |
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| 17 | |
| 18 <body> | |
| 19 <a name="top_of_page" id="top_of_page"></a> | |
| 20 | |
| 21 <p style="font-size:1px;"> </p> | |
| 22 | |
| 23 <table class="nav" summary="Navigation aid" border="0" width= | |
| 24 "100%" cellpadding="0" cellspacing="0"> | |
| 25 <tr> | |
| 26 <td valign="baseline"><b>LTPDA Toolbox</b></td><td><a href="../helptoc.html">contents</a></td> | |
| 27 | |
| 28 <td valign="baseline" align="right"><a href= | |
| 29 "ltpda_training_topic_4_3.html"><img src="b_prev.gif" border="0" align= | |
| 30 "bottom" alt="Modelling a system"></a> <a href= | |
| 31 "ltpda_training_topic_4_4_1.html"><img src="b_next.gif" border="0" align= | |
| 32 "bottom" alt="By discretizing transfer function models"></a></td> | |
| 33 </tr> | |
| 34 </table> | |
| 35 | |
| 36 <h1 class="title"><a name="f3-12899" id="f3-12899"></a>How to filter data</h1> | |
| 37 <hr> | |
| 38 | |
| 39 <p> | |
| 40 <h2>How to filter data</h2> | |
| 41 | |
| 42 In the previous sections we've been dealing with continuous (in s domain) | |
| 43 systems. Now we want to apply this to data so we will need first to discretize | |
| 44 to obtain a digital filter to then apply it to the data. Another typical | |
| 45 application is not to derive the filter from a model but design it from the | |
| 46 properties we want it to have (cut-off frequency, order, lowpass...). | |
| 47 Both topics will be covered here with two examples: | |
| 48 | |
| 49 <nl> | |
| 50 <li><b>Obtain a digital filter from a model:</b> we continue with the previous | |
| 51 closed loop example to translate the obtained models into filters.</li> | |
| 52 <li><b>Define filter properties:</b> in this section we design a bandpass filter that will | |
| 53 allow us to estimate the noise spectrum of interferometer data in the desired | |
| 54 bandwidth.</li> | |
| 55 </nl> | |
| 56 | |
| 57 </p> | |
| 58 | |
| 59 <br> | |
| 60 <br> | |
| 61 <table class="nav" summary="Navigation aid" border="0" width= | |
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| 63 <tr valign="top"> | |
| 64 <td align="left" width="20"><a href="ltpda_training_topic_4_3.html"><img src= | |
| 65 "b_prev.gif" border="0" align="bottom" alt= | |
| 66 "Modelling a system"></a> </td> | |
| 67 | |
| 68 <td align="left">Modelling a system</td> | |
| 69 | |
| 70 <td> </td> | |
| 71 | |
| 72 <td align="right">By discretizing transfer function models</td> | |
| 73 | |
| 74 <td align="right" width="20"><a href= | |
| 75 "ltpda_training_topic_4_4_1.html"><img src="b_next.gif" border="0" align= | |
| 76 "bottom" alt="By discretizing transfer function models"></a></td> | |
| 77 </tr> | |
| 78 </table><br> | |
| 79 | |
| 80 <p class="copy">©LTP Team</p> | |
| 81 </body> | |
| 82 </html> |