<?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet type="text/xsl" href="static/style.xsl"?><OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd"><responseDate>2026-09-19T11:37:01Z</responseDate><request verb="GetRecord" identifier="oai:dspace.mit.edu:1721.1/50083" metadataPrefix="dim">https://dspace.mit.edu/server/oai/request</request><GetRecord><record><header><identifier>oai:dspace.mit.edu:1721.1/50083</identifier><datestamp>2022-01-13T07:54:11Z</datestamp><setSpec>com_1721.1_7582</setSpec><setSpec>com_1721.1_7581</setSpec><setSpec>col_1721.1_131023</setSpec></header><metadata><dim:dim xmlns:dim="http://www.dspace.org/xmlns/dspace/dim" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:doc="http://www.lyncode.com/xoai" xsi:schemaLocation="http://www.dspace.org/xmlns/dspace/dim http://www.dspace.org/schema/dim.xsd">
   <dim:field mdschema="dc" element="contributor" qualifier="advisor" lang="en_US">David Miller.</dim:field>
   <dim:field mdschema="dc" element="contributor" qualifier="author" lang="en_US">Enright, John Patrick, 1974-</dim:field>
   <dim:field mdschema="dc" element="contributor" qualifier="other" lang="en_US">Massachusetts Institute of Technology. Dept. of Aeronautics and Astronautics.</dim:field>
   <dim:field mdschema="dc" element="contributor" qualifier="department">Massachusetts Institute of Technology. Department of Aeronautics and Astronautics</dim:field>
   <dim:field mdschema="dc" element="date" qualifier="accessioned">2009-12-10T19:09:52Z</dim:field>
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   <dim:field mdschema="dc" element="date" qualifier="copyright" lang="en_US">1999</dim:field>
   <dim:field mdschema="dc" element="date" qualifier="issued" lang="en_US">1999</dim:field>
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   <dim:field mdschema="dc" element="identifier" qualifier="oclc" lang="en_US">44606668</dim:field>
   <dim:field mdschema="dc" element="description" lang="en_US">Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1999.</dim:field>
   <dim:field mdschema="dc" element="description" lang="en_US">Includes bibliographical references (p. 169-173).</dim:field>
   <dim:field mdschema="dc" element="description" qualifier="abstract" lang="en_US">The development and use of a novel testbed architecture is presented. Separated spacecraft interferometers have been proposed for applications in sparse aperture radar or astronomical observations. Modeled after these systems, an integrated hardware and software interferometry testbed is developed. Utilizing acoustic sources and sensors as a simplified analog to radio or optical systems, the Acoustic Imaging Testbed's simplest function is that of a Michelson interferometer. Robot arms control the motion of microphones. Through successive measurements an acoustic image can be formed. On top of this functionality, a layered software architecture is developed. This software creates a virtual environment that mimics the command, control and communications functions appropriate to a space interferometer. Autonomous spacecraft agents interact within this environment as the logical equivalent of distributed satellites. Optimal imaging configurations are validated. A scalable approach to cluster autonomy is discussed.</dim:field>
   <dim:field mdschema="dc" element="description" qualifier="statementofresponsibility" lang="en_US">by John Enright.</dim:field>
   <dim:field mdschema="dc" element="description" qualifier="degree" lang="en_US">S.M.</dim:field>
   <dim:field mdschema="dc" element="format" qualifier="extent" lang="en_US">186 p.</dim:field>
   <dim:field mdschema="dc" element="language" qualifier="iso" lang="en_US">eng</dim:field>
   <dim:field mdschema="dc" element="publisher" lang="en_US">Massachusetts Institute of Technology</dim:field>
   <dim:field mdschema="dc" element="rights" lang="en_US">M.I.T. theses are protected by &#xd;
copyright. They may be viewed from this source for any purpose, but &#xd;
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permission. See provided URL for inquiries about permission.</dim:field>
   <dim:field mdschema="dc" element="rights" qualifier="uri" lang="en_US">http://dspace.mit.edu/handle/1721.1/7582</dim:field>
   <dim:field mdschema="dc" element="subject" lang="en_US">Aeronautics and Astronautics.</dim:field>
   <dim:field mdschema="dc" element="title" lang="en_US">Investigation of spacecraft cluster autonomy through an acoustic imaging interferometric testbed</dim:field>
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   	&lt;Title>Investigation of spacecraft cluster autonomy through an acoustic imaging interferometric testbed&lt;/Title>
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   	&lt;PublicationDate>1999&lt;/PublicationDate>
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        	&lt;DisplayName>Enright, John Patrick, 1974-&lt;/DisplayName>
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    &lt;Keyword>Aeronautics and Astronautics.&lt;/Keyword>
   	&lt;Abstract>The development and use of a novel testbed architecture is presented. Separated spacecraft interferometers have been proposed for applications in sparse aperture radar or astronomical observations. Modeled after these systems, an integrated hardware and software interferometry testbed is developed. Utilizing acoustic sources and sensors as a simplified analog to radio or optical systems, the Acoustic Imaging Testbed&amp;apos;s simplest function is that of a Michelson interferometer. Robot arms control the motion of microphones. Through successive measurements an acoustic image can be formed. On top of this functionality, a layered software architecture is developed. This software creates a virtual environment that mimics the command, control and communications functions appropriate to a space interferometer. Autonomous spacecraft agents interact within this environment as the logical equivalent of distributed satellites. Optimal imaging configurations are validated. A scalable approach to cluster autonomy is discussed.&lt;/Abstract>
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