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		<title>Smith 2013a - Revision history</title>
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		<updated>2026-04-23T15:57:39Z</updated>
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	<entry>
		<id>https://www.scipedia.com/wd/index.php?title=Smith_2013a&amp;diff=201292&amp;oldid=prev</id>
		<title>Scipediacontent: Scipediacontent moved page Draft Content 261128252 to Smith 2013a</title>
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				<updated>2021-02-02T03:15:03Z</updated>
		
		<summary type="html">&lt;p&gt;Scipediacontent moved page &lt;a href=&quot;/public/Draft_Content_261128252&quot; class=&quot;mw-redirect&quot; title=&quot;Draft Content 261128252&quot;&gt;Draft Content 261128252&lt;/a&gt; to &lt;a href=&quot;/public/Smith_2013a&quot; title=&quot;Smith 2013a&quot;&gt;Smith 2013a&lt;/a&gt;&lt;/p&gt;
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				&lt;td colspan='1' style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan='1' style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 03:15, 2 February 2021&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan='2' style='text-align: center;' lang='en'&gt;&lt;div class=&quot;mw-diff-empty&quot;&gt;(No difference)&lt;/div&gt;
&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;</summary>
		<author><name>Scipediacontent</name></author>	</entry>

	<entry>
		<id>https://www.scipedia.com/wd/index.php?title=Smith_2013a&amp;diff=201291&amp;oldid=prev</id>
		<title>Scipediacontent: Created page with &quot; == Abstract ==  The Traffic Alert and Collision Avoidance System (TCAS) has been mandated worldwide to protect against aircraft mid-air collisions. One drawback of the curren...&quot;</title>
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				<updated>2021-02-02T03:14:57Z</updated>
		
		<summary type="html">&lt;p&gt;Created page with &amp;quot; == Abstract ==  The Traffic Alert and Collision Avoidance System (TCAS) has been mandated worldwide to protect against aircraft mid-air collisions. One drawback of the curren...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;&lt;br /&gt;
== Abstract ==&lt;br /&gt;
&lt;br /&gt;
The Traffic Alert and Collision Avoidance System (TCAS) has been mandated worldwide to protect against aircraft mid-air collisions. One drawback of the current TCAS design is limited support for certain closely spaced parallel runway operations. TCAS alerts too frequently, leading pilots to often inhibit Resolution Advisories during approach. Research is underway on ACAS X, a next-generation collision avoidance system that will support new surveillance systems and air traffic control procedures. ACAS X has been shown to outperform TCAS for en route encounter scenarios. However, the design parameters that are tuned for the en route environment are not appropriate for closely spaced parallel operations. One concept to allow for closely spaced parallel operations is a procedure-specific mode of the logic that reduces the nuisance alert rate while still providing collision protection. This paper describes the application of surrogate modeling for the purpose of tuning ACAS X for parallel operations. The performance of the tuned system is assessed using a data-driven blunder model and an operational performance model. The tuned ACAS X logic is found to outperform TCAS for each model in terms of both safety and operational suitability.&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
== Original document ==&lt;br /&gt;
&lt;br /&gt;
The different versions of the original document can be found in:&lt;br /&gt;
&lt;br /&gt;
* [https://dspace.mit.edu/bitstream/1721.1/82491/2/862235554-MIT.pdf https://dspace.mit.edu/bitstream/1721.1/82491/2/862235554-MIT.pdf]&lt;br /&gt;
&lt;br /&gt;
* [http://arc.aiaa.org/doi/pdf/10.2514/6.2013-4624 http://arc.aiaa.org/doi/pdf/10.2514/6.2013-4624],&lt;br /&gt;
: [http://dx.doi.org/10.2514/6.2013-4624 http://dx.doi.org/10.2514/6.2013-4624]&lt;br /&gt;
&lt;br /&gt;
* [http://dspace.mit.edu/bitstream/handle/1721.1/82491/862235554-MIT.pdf;sequence=2 http://dspace.mit.edu/bitstream/handle/1721.1/82491/862235554-MIT.pdf;sequence=2],&lt;br /&gt;
: [http://dspace.mit.edu/handle/1721.1/82491 http://dspace.mit.edu/handle/1721.1/82491],&lt;br /&gt;
: [https://arc.aiaa.org/doi/pdf/10.2514/6.2013-4624 https://arc.aiaa.org/doi/pdf/10.2514/6.2013-4624],&lt;br /&gt;
: [https://core.ac.uk/display/18321604 https://core.ac.uk/display/18321604],&lt;br /&gt;
: [https://academic.microsoft.com/#/detail/1998452002 https://academic.microsoft.com/#/detail/1998452002]&lt;/div&gt;</summary>
		<author><name>Scipediacontent</name></author>	</entry>

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