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	<id>https://www.na-mic.org/w/index.php?action=history&amp;feed=atom&amp;title=6DOF_Two_State_Electromagnetic_Trackers</id>
	<title>6DOF Two State Electromagnetic Trackers - Revision history</title>
	<link rel="self" type="application/atom+xml" href="https://www.na-mic.org/w/index.php?action=history&amp;feed=atom&amp;title=6DOF_Two_State_Electromagnetic_Trackers"/>
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	<updated>2026-04-09T03:26:24Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>https://www.na-mic.org/w/index.php?title=6DOF_Two_State_Electromagnetic_Trackers&amp;diff=92587&amp;oldid=prev</id>
		<title>Traneus at 21:31, 20 May 2016</title>
		<link rel="alternate" type="text/html" href="https://www.na-mic.org/w/index.php?title=6DOF_Two_State_Electromagnetic_Trackers&amp;diff=92587&amp;oldid=prev"/>
		<updated>2016-05-20T21:31:05Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #222; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #222; text-align: center;&quot;&gt;Revision as of 21:31, 20 May 2016&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l7&quot; &gt;Line 7:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 7:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* By electromagnetic reciprocity, one can use a three-axis transmitter with a two-axis receiver, as detailed in the following paper:&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* By electromagnetic reciprocity, one can use a three-axis transmitter with a two-axis receiver, as detailed in the following paper:&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt; &lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* Eugene Paperno and Pavel Keisar, &amp;quot;Three-Dimensional Magnetic Tracking of Biaxial Sensors&amp;quot;, IEEE Transactions on Magnetics, vol. 40, No.3, May 2004, has good discussion with figures detailing the inaccuracy near receiver&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;-&lt;/del&gt;coil &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;axes&lt;/del&gt;.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color: #222; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* Eugene Paperno and Pavel Keisar, &amp;quot;Three-Dimensional Magnetic Tracking of Biaxial Sensors&amp;quot;, IEEE Transactions on Magnetics, vol. 40, No.3, May 2004, has good discussion with figures detailing the inaccuracy near &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;the missing &lt;/ins&gt;receiver coil &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;and near the plane of the two present receiver coils&lt;/ins&gt;.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Traneus</name></author>
		
	</entry>
	<entry>
		<id>https://www.na-mic.org/w/index.php?title=6DOF_Two_State_Electromagnetic_Trackers&amp;diff=92586&amp;oldid=prev</id>
		<title>Traneus: Created page with &quot;* Raab's two-state tracker uses two transmitter coils instead of the usual three transmitter coils, as discussed in the following paper:  * Frederick H. Raab, &quot;Quasi-Static Ma...&quot;</title>
		<link rel="alternate" type="text/html" href="https://www.na-mic.org/w/index.php?title=6DOF_Two_State_Electromagnetic_Trackers&amp;diff=92586&amp;oldid=prev"/>
		<updated>2016-05-20T21:27:29Z</updated>

		<summary type="html">&lt;p&gt;Created page with &amp;quot;* Raab&amp;#039;s two-state tracker uses two transmitter coils instead of the usual three transmitter coils, as discussed in the following paper:  * Frederick H. Raab, &amp;quot;Quasi-Static Ma...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;* Raab's two-state tracker uses two transmitter coils instead of the usual three transmitter coils, as discussed in the following paper:&lt;br /&gt;
&lt;br /&gt;
* Frederick H. Raab, &amp;quot;Quasi-Static Magnetic-Field Technique for Determining Position and Orientation&amp;quot;, IEEE Transactions on Geoscience and Remote Sensing, Vol. GE-19, No. 4, October 1981, pages 235-243. Section &amp;quot;Two-State_Excitation&amp;quot; has direct solution for cartesian-coordinates position first and then for orientation. The position solution can generate NANs.&lt;br /&gt;
&lt;br /&gt;
* Eugene Paperno, Ichiro Sasada, and Eduard Leonovich, &amp;quot;A New Method for Magnetic Position and Orientation Tracking&amp;quot;, IEEE Transactions on Magnetics, vol. 37, No.4, July 2001, has direct solution for spherical-coordinates position first and then for orientation. The position solution never generates NANs, but does clearly show the limitations of two-state: Positions on or close to the missing transmitter-coil axis, are inaccessible. Positions in the plane of the two present transmitter-coil axes, are very noisy.&lt;br /&gt;
&lt;br /&gt;
* By electromagnetic reciprocity, one can use a three-axis transmitter with a two-axis receiver, as detailed in the following paper:&lt;br /&gt;
&lt;br /&gt;
* Eugene Paperno and Pavel Keisar, &amp;quot;Three-Dimensional Magnetic Tracking of Biaxial Sensors&amp;quot;, IEEE Transactions on Magnetics, vol. 40, No.3, May 2004, has good discussion with figures detailing the inaccuracy near receiver-coil axes.&lt;/div&gt;</summary>
		<author><name>Traneus</name></author>
		
	</entry>
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