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	<title> &#187; laser</title>
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		<title>District Attorney lauds use of Leica Geosystems 3D laser scan data as demonstrative forensic evidence in homicide trial</title>
		<link>http://highdefinitionsurveys.com/in-the-news/district-attorney-3d-laser-scan-forensic-evidence/</link>
		<comments>http://highdefinitionsurveys.com/in-the-news/district-attorney-3d-laser-scan-forensic-evidence/#comments</comments>
		<pubDate>Thu, 03 Sep 2009 20:31:29 +0000</pubDate>
		<dc:creator>Travis Reinke</dc:creator>
				<category><![CDATA[Forensic]]></category>
		<category><![CDATA[In the News]]></category>
		<category><![CDATA[3d]]></category>
		<category><![CDATA[crime 360]]></category>
		<category><![CDATA[definition]]></category>
		<category><![CDATA[high]]></category>
		<category><![CDATA[homicide]]></category>
		<category><![CDATA[laser]]></category>
		<category><![CDATA[leica geosystems]]></category>
		<category><![CDATA[scanners]]></category>
		<category><![CDATA[scanning]]></category>
		<category><![CDATA[surveying]]></category>
		<category><![CDATA[trial]]></category>

		<guid isPermaLink="false">http://highdefinitionsurveys.com/?p=355</guid>
		<description><![CDATA[
			
				
			
		
(Norcross, Ga., 03 September 2009)  District Attorney Joe Mulholland of the South Georgia Judicial Circuit added yet another legal case reference to the growing number of U.S. court cases in which Leica Geosystems 3D laser scan data has been admitted into evidence when he successfully proffered and tendered to the jury a visually compelling Leica [...]]]></description>
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<p><img class="alignright" title="Leica Announces New ScanStation C10 Laser Scanner" src="http://www.leica-geosystems.com/images/new/base/LGS_logo_web.gif" alt="LGS logo web District Attorney lauds use of Leica Geosystems 3D laser scan data as demonstrative forensic evidence in homicide trial" width="217" height="50" />(Norcross, Ga., 03 September 2009)  District Attorney Joe Mulholland of the South Georgia Judicial Circuit added yet another legal case reference to the growing number of U.S. court cases in which <a title="Leica Geosystems" href="http://highdefinitionsurveys.com/tag/leica-geosystems/">Leica Geosystems</a> 3D <a title="laser scan" href="http://highdefinitionsurveys.com/tag/laser-scan/">laser scan</a> <a title="data" href="http://highdefinitionsurveys.com/tag/data/">data</a> has been admitted into evidence when he successfully proffered and tendered to the jury a visually compelling <a title="Leica" href="http://highdefinitionsurveys.com/tag/leica/">Leica</a> TruView.</p>
<p>During the murder <a title="trial" href="http://highdefinitionsurveys.com/tag/trial/">trial</a> of Antonio Jerome Greenlee in Decatur County Superior Court, witness and <a title="crime scene" href="http://highdefinitionsurveys.com/tag/crime-scene/">crime scene</a> investigator, Andy Forte of the Thomas County Sheriff&#8217;s Department, used Leica TruView to virtually place the jury at the crime scene and to show them how the <a title="homicide" href="http://highdefinitionsurveys.com/tag/homicide/">homicide</a> could have occurred.  The case stems from the homicide of 21-year-old Ebony Clarke of Bainbridge, GA, who was shot and killed on August 12<sup>th</sup>, 2008, during a street altercation between two men.</p>
<p>Leica TruView is a free, web-enabled panoramic <a title="point cloud" href="http://highdefinitionsurveys.com/tag/point-cloud/">point cloud</a> viewer that allows <a title="users" href="http://highdefinitionsurveys.com/tag/users/">users</a> to view, pan, zoom, measure and markup the incredibly rich <a title="point" href="http://highdefinitionsurveys.com/tag/point/">point</a> cloud captured by the Leica <a title="ScanStation" href="http://highdefinitionsurveys.com/tag/scanstation/">ScanStation</a> 3D <a title="laser scanner" href="http://highdefinitionsurveys.com/tag/laser-scanner/">laser scanner</a>.  The Leica ScanStation allows investigators to first photograph and then make millions of measurements of a crime scene in just a few minutes thus &#8220;freezing the scene in time&#8221; forever.  A Leica TruView data set can then be generated in minutes after <a title="scanning" href="http://highdefinitionsurveys.com/tag/scanning/">scanning</a> for briefings or analysis or as in this case as a jury exhibit.</p>
<p>&#8220;The jury really, really liked it and we had jurors comment afterwards about how effective it was&#8221; said District Attorney Mulholland.  &#8220;We not only used the TruView to support Andy&#8217;s testimony, but the judge then allowed Andy to show it again during my direct examination of other witnesses as I asked them questions about where they were standing or where the shooter was.  TruView is basically a <a title="high" href="http://highdefinitionsurveys.com/tag/high/">high</a>-tech picture.  It is not testimony.  It is offered as an exhibit and demonstrative evidence.  This seemed to play well with the judge.  The <a title="Defense" href="http://highdefinitionsurveys.com/tag/defense/">Defense</a> did not object and I think that they thought the same thing.&#8221;</p>
<p>Mulholland went on to say that after the trial the judge called him to the bench and commented on how effective the use of the Leica TruView was and encouraged him to use it again.  &#8220;We certainly plan on doing so.  The scanning <a title="software" href="http://highdefinitionsurveys.com/tag/software/">software</a> was absolutely fantastic&#8221; said the D.A. The judge also contacted Thomas County Sheriff R. Carlton Powell to thank him for his agency&#8217;s assistance with the case and to compliment him on the professional nature of the exhibits generated by his investigators.   Sheriff Powell was instrumental in bringing ScanStation <a title="technology" href="http://highdefinitionsurveys.com/tag/technology/">technology</a> to Georgia <a title="law enforcement" href="http://highdefinitionsurveys.com/tag/law-enforcement/">law enforcement</a> and has made it available to the Georgia Bureau of <a title="Investigation" href="http://highdefinitionsurveys.com/tag/investigation/">Investigation</a> and other agencies as a courtesy.</p>
<p>&#8220;The Leica ScanStation has been the choice of police and sheriff&#8217;s departments, <a title="state" href="http://highdefinitionsurveys.com/tag/state/">state</a> patrols, crime laboratories, prosecutor&#8217;s offices, coroner and medical examiners and tribal justice agencies&#8221; said Tony Grissim the Public Safety and <a title="Forensic" href="http://highdefinitionsurveys.com/tag/forensic/">Forensic</a> Account Manager for Leica <a title="Geosystems" href="http://highdefinitionsurveys.com/tag/geosystems/">Geosystems</a>.   &#8220;The high volume of traffic we are seeing on our web site at <a href="http://cl.exct.net/?ju=fe2b16747663047b731676&amp;ls=fdee1c70746d0d78751c7874&amp;m=fef0177870620d&amp;l=fe671576756205797710&amp;s=fe2e1d777567037c741574&amp;jb=ffcf14&amp;t=" target="_blank">www.leica-geosystems.us/forensic</a><span style="font-family: Arial;"> is an indicator to us that word is really getting around within the law enforcement community.&#8221;</span><br />
Leica Geosystems &#8211; when it has to be right</p>
<p>With close to 200 years of pioneering solutions to measure the world, Leica Geosystems products and <a title="services" href="http://highdefinitionsurveys.com/tag/services/">services</a> are trusted by professionals worldwide to help them capture, analyze, and present spatial information. Leica Geosystems is best known for its broad array of products that capture accurately, <a title="model" href="http://highdefinitionsurveys.com/tag/model/">model</a> quickly, analyze easily, and visualize and present spatial information.</p>
<p>Those who use Leica Geosystems products every day trust them for their dependability, the value they deliver, and the superior customer support. Based in Heerbrugg, Switzerland, Leica Geosystems is a global company with tens of thousands of customers supported by more than 3&#8242;500 employees in 28 countries and hundreds of partners located in more than 120 countries around the world. Leica Geosystems is part of the <a title="Hexagon" href="http://highdefinitionsurveys.com/tag/hexagon/">Hexagon</a> Group, Sweden.</p>
<p>For further information please contact:</p>
<p>Leica Geosystems Inc.<br />
Andre Ribeiro<br />
Director of Marketing<br />
Atlanta, GA 30092<br />
Phone:   +1 (770) 326-9557<br />
Fax:         +1 (770) 447-0710<br />
<a href="mailto:Andre.ribeiro@leicaus.com" target="_blank">Andre.ribeiro@leicaus.com<br />
</a><strong><a href="http://cl.exct.net/?ju=fe2b16747663047b731676&amp;ls=fdee1c70746d0d78751c7874&amp;m=fef0177870620d&amp;l=fe671576756205797710&amp;s=fe2e1d777567037c741574&amp;jb=ffcf14&amp;t=" target="_blank"><span style="text-decoration: none;">www.leica-geosystems.us/forensic</span></a></strong></p>]]></content:encoded>
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		<item>
		<title>Quantapoint Announces Integration of Laser Scan Data Into Intergraph SmartPlant 3D(TM)</title>
		<link>http://highdefinitionsurveys.com/software/quantapoint-announces-integration-of-laser-scan-data-into-intergraph-smartplant-3dtm/</link>
		<comments>http://highdefinitionsurveys.com/software/quantapoint-announces-integration-of-laser-scan-data-into-intergraph-smartplant-3dtm/#comments</comments>
		<pubDate>Mon, 15 Jun 2009 20:04:29 +0000</pubDate>
		<dc:creator>Travis Reinke</dc:creator>
				<category><![CDATA[Laser Scanning]]></category>
		<category><![CDATA[Modeling]]></category>
		<category><![CDATA[Software]]></category>
		<category><![CDATA[85%]]></category>
		<category><![CDATA[accessed]]></category>
		<category><![CDATA[accessing]]></category>
		<category><![CDATA[add]]></category>
		<category><![CDATA[cad]]></category>
		<category><![CDATA[capabilities]]></category>
		<category><![CDATA[clashes]]></category>
		<category><![CDATA[create]]></category>
		<category><![CDATA[data]]></category>
		<category><![CDATA[design]]></category>
		<category><![CDATA[directly]]></category>
		<category><![CDATA[images]]></category>
		<category><![CDATA[instead]]></category>
		<category><![CDATA[laser]]></category>
		<category><![CDATA[laser data]]></category>
		<category><![CDATA[laser images]]></category>
		<category><![CDATA[laser models]]></category>
		<category><![CDATA[models]]></category>
		<category><![CDATA[point]]></category>
		<category><![CDATA[points]]></category>
		<category><![CDATA[quantacad]]></category>
		<category><![CDATA[quantapoint]]></category>
		<category><![CDATA[remodeling]]></category>
		<category><![CDATA[scan]]></category>
		<category><![CDATA[sma]]></category>
		<category><![CDATA[smartplant]]></category>
		<category><![CDATA[state]]></category>
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		<guid isPermaLink="false">http://highdefinitionsurveys.com/?p=187</guid>
		<description><![CDATA[
			
				
			
		
PITTSBURGH, PA &#8212; 06/15/09 &#8212; Quantapoint (http://www.quantapoint.com) &#8212; provider of laser scanning technology and services that help companies achieve Zero-Defect Projects™ &#8212; today announced that Quantapoint Laser Models™ may be accessed directly in Intergraph SmartPlant 3D using QuantaCAD 9.0. QuantaCAD enables 3D laser scan data to be accessed as high-definition Quantapoint Laser Models™ (not fuzzy &#8220;point clouds&#8221;) and [...]]]></description>
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			<a href="http://api.tweetmeme.com/share?url=http%3A%2F%2Fhighdefinitionsurveys.com%2Fsoftware%2Fquantapoint-announces-integration-of-laser-scan-data-into-intergraph-smartplant-3dtm%2F"><br />
				<img src="http://api.tweetmeme.com/imagebutton.gif?url=http%3A%2F%2Fhighdefinitionsurveys.com%2Fsoftware%2Fquantapoint-announces-integration-of-laser-scan-data-into-intergraph-smartplant-3dtm%2F&amp;source=HDLS&amp;style=normal&amp;service=bit.ly" height="61" width="50" title="Quantapoint Announces Integration of Laser Scan Data Into Intergraph SmartPlant 3D(TM)" alt=" Quantapoint Announces Integration of Laser Scan Data Into Intergraph SmartPlant 3D(TM)" /><br />
			</a>
		</div>
<p><img class="alignright" src="http://www.quantapoint.com/v2/wp-content/themes/qptheme/images/logo.png" alt="logo Quantapoint Announces Integration of Laser Scan Data Into Intergraph SmartPlant 3D(TM)" width="206" height="39" title="Quantapoint Announces Integration of Laser Scan Data Into Intergraph SmartPlant 3D(TM)" />PITTSBURGH, PA &#8212; 06/15/09 &#8212; <a title="Quantapoint" href="http://highdefinitionsurveys.com/tag/quantapoint/">Quantapoint</a> (<a href="http://www.quantapoint.com/">http://www.quantapoint.com</a><span>) &#8212; provider of <span class="IL_LINK_STYLE"><a title="laser scanning" href="http://highdefinitionsurveys.com/tag/laser-scanning/">laser scanning</a></span> <a title="technology" href="http://highdefinitionsurveys.com/tag/technology/">technology</a> and <a title="services" href="http://highdefinitionsurveys.com/tag/services/">services</a> that help companies achieve </span><a href="http://www.quantapoint.com/capabilities/">Zero-Defect Projects™</a> &#8212; today announced that Quantapoint <a title="Laser Models" href="http://highdefinitionsurveys.com/tag/laser-models/">Laser Models</a>™ may be <a title="accessed" href="http://highdefinitionsurveys.com/tag/accessed/">accessed</a> <a title="directly" href="http://highdefinitionsurveys.com/tag/directly/">directly</a> in Intergraph <a title="SmartPlant" href="http://highdefinitionsurveys.com/tag/smartplant/">SmartPlant</a> 3D using <a href="http://www.quantapoint.com/capabilities/integratelaserscanning/quantacadlaserscanning">QuantaCAD</a> 9.0. <a title="QuantaCAD" href="http://highdefinitionsurveys.com/tag/quantacad/">QuantaCAD</a> enables 3D <a title="laser scan" href="http://highdefinitionsurveys.com/tag/laser-scan/">laser scan</a> data to be accessed as high-<a title="definition" href="http://highdefinitionsurveys.com/tag/definition/">definition</a> Quantapoint <a href="http://www.quantapoint.com/capabilities/lasermodels">Laser Models™</a><span> (not fuzzy &#8220;<a title="point clouds" href="http://highdefinitionsurveys.com/tag/point-clouds/">point clouds</a>&#8221;) and photo-realistic <a title="Laser Images" href="http://highdefinitionsurveys.com/tag/laser-images/">Laser Images</a>™ directly within <span class="IL_SPAN"><a title="design" href="http://highdefinitionsurveys.com/tag/design/">design</a> <a title="software" href="http://highdefinitionsurveys.com/tag/software/">software</a></span>.</span></p>
<p><a href="http://www.quantapoint.com/capabilities/integratelaserscanning/quantacadlaserscanning">QuantaCAD</a><span> provides a number of useful <a title="capabilities" href="http://highdefinitionsurveys.com/tag/capabilities/">capabilities</a> to SmartPlant 3D users to enable them to compare and validate CAD <a title="models" href="http://highdefinitionsurveys.com/tag/models/">models</a>, visualize proposed modifications for design and constructability reviews, and identify and correct potential <span class="IL_LINK_STYLE">construction</span>interferences. Some of the capabilities include:</span></p>
<pre><span>-- Direct Integration: A separate "point server" is not required due to the smaller size of the Laser Models. -- State Manager: Store and recall the <span class="IL_SPAN"><a title="laser data" href="http://highdefinitionsurveys.com/tag/laser-data/">laser data</a></span><span> state (loaded Laser Models, <span class="IL_LINK_STYLE">Laser <a title="Images" href="http://highdefinitionsurveys.com/tag/images/">Images</a></span> and views) so users can quickly resume work <a title="instead" href="http://highdefinitionsurveys.com/tag/instead/">instead</a> of having to manually reload laser scan data. -- Tag Points: <a title="Create" href="http://highdefinitionsurveys.com/tag/create/">Create</a> and edit tag points (specific 3D locations, such as tie points) directly in the </span><span class="IL_LINK_STYLE">laser data</span> so users can access consistent design starting and ending points across the team. -- Clipping and Slicing: Clip <span class="IL_SPAN">laser data</span> to temporarily hide view obstructions or slice it to create a section of <span class="IL_SPAN">laser data</span>. -- Demolition: Demolish areas of the facility being removed in the <span class="IL_SPAN">laser data</span> to remove it from view. -- Flexible Licensing: Quantapoint software are now <a title="integrated" href="http://highdefinitionsurveys.com/tag/integrated/">integrated</a> and may be licensed monthly for standalone or network usage, providing more flexibility based on project or program needs.</span></pre>
<p>By using <a href="http://www.quantapoint.com/capabilities/integratelaserscanning/quantacadlaserscanning">QuantaCAD</a><span> to put reality on the desktop and in <span class="IL_LINK_STYLE">design software</span>, clients have typically been able to reduce <a title="remodeling" href="http://highdefinitionsurveys.com/tag/remodeling/">remodeling</a> time by 85% (by using </span><a href="http://www.quantapoint.com/capabilities/lasermodels">Laser Models</a> instead of CAD remodeling or as a basis to remodel), decrease design time by 60% (by <a title="accessing" href="http://highdefinitionsurveys.com/tag/accessing/">accessing</a> more complete and clear <a href="http://www.quantapoint.com/capabilities/lasermodels">Laser Models</a><span> and <span class="IL_SPAN">Laser Images</span> for design) and cut rework from design <a title="clashes" href="http://highdefinitionsurveys.com/tag/clashes/">clashes</a> by 85% (by correcting clashes between the </span><a href="http://www.quantapoint.com/capabilities/lasermodels">Laser Models</a><span> and the new CAD design). If you are interested in finding out more about accessing <span class="IL_SPAN">laser data</span> in SmartPlant 3D using </span><a href="http://www.quantapoint.com/capabilities/integratelaserscanning/quantacadlaserscanning">QuantaCAD</a> 9.0 or would like a demonstration, visit <a href="http://www.quantapoint.com/qp/contact">www.quantapoint.com/qp/contact</a> or e-mail <a href="mailto:info@quantapoint.com">info@quantapoint.com</a>.</p>
<p>Image Available: <a href="http://www2.marketwire.com/mw/frame_mw?attachid=1002516">http://www2.marketwire.com/mw/frame_mw?attachid=1002516</a></p>
<p>Additional information, please contact:</p>
<p>James McGill<br />
VP of Marketing<br />
Quantapoint, Inc.<br />
Telephone: 412-653-0100, x-200<br />
E-mail: <a href="mailto:jmcgill@quantapoint.com">jmcgill@quantapoint.com</a></p>]]></content:encoded>
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		<title>NIST’s LIDAR May Offer Peerless Precision in Remote Measurements</title>
		<link>http://highdefinitionsurveys.com/uncategorized/32/</link>
		<comments>http://highdefinitionsurveys.com/uncategorized/32/#comments</comments>
		<pubDate>Wed, 27 May 2009 20:18:17 +0000</pubDate>
		<dc:creator>Travis Reinke</dc:creator>
				<category><![CDATA[LiDAR]]></category>
		<category><![CDATA[Uncategorized]]></category>
		<category><![CDATA[Government]]></category>
		<category><![CDATA[laser]]></category>
		<category><![CDATA[measurement]]></category>
		<category><![CDATA[national institute of standards and technology]]></category>
		<category><![CDATA[NIST]]></category>
		<category><![CDATA[pulse]]></category>
		<category><![CDATA[remote]]></category>
		<category><![CDATA[sensing]]></category>

		<guid isPermaLink="false">http://highdefinitionsurveys.com/?p=32</guid>
		<description><![CDATA[
			
				
			
		

Source: http://www.nist.gov/public_affairs/techbeat/tbx20090526_lidar.htm

By combining the best of two different distance measurement approaches with a super-accurate technology called an optical frequency comb, researchers at the National Institute of Standards and Technology (NIST) have built a laser ranging system that can pinpoint multiple objects with nanometer precision over distances up to 100 kilometers. The novel LIDAR (“light detection and ranging”) system [...]]]></description>
			<content:encoded><![CDATA[<div class="tweetmeme_button" style="float: left; margin-right: 10px; margin-top: 0px">
			<a href="http://api.tweetmeme.com/share?url=http%3A%2F%2Fhighdefinitionsurveys.com%2Funcategorized%2F32%2F"><br />
				<img src="http://api.tweetmeme.com/imagebutton.gif?url=http%3A%2F%2Fhighdefinitionsurveys.com%2Funcategorized%2F32%2F&amp;source=HDLS&amp;style=normal&amp;service=bit.ly" height="61" width="50" title="NIST’s LIDAR May Offer Peerless Precision in Remote Measurements" alt=" NIST’s LIDAR May Offer Peerless Precision in Remote Measurements" /><br />
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<p><img class="alignright" src="http://www.nist.gov/fsrscripts/sitelogo.gif" alt="sitelogo NIST’s LIDAR May Offer Peerless Precision in Remote Measurements" width="130" height="60" title="NIST’s LIDAR May Offer Peerless Precision in Remote Measurements" /></p>
<p style="text-align: left;">Source: <a href="http://www.nist.gov/public_affairs/techbeat/tbx20090526_lidar.htm">http://www.nist.gov/public_affairs/techbeat/tbx20090526_lidar.htm</a></p>
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<p class="body"><span class="capi">B</span>y combining the best of two different distance <a title="measurement" href="http://highdefinitionsurveys.com/tag/measurement/">measurement</a> approaches with a super-accurate <a title="technology" href="http://highdefinitionsurveys.com/tag/technology/">technology</a> called an optical frequency comb, researchers at the <a href="http://www.nist.gov">National Institute of Standards and Technology (NIST)</a> have built a <a title="laser" href="http://highdefinitionsurveys.com/tag/laser/">laser</a> ranging system that can pinpoint multiple objects with nanometer precision over distances up to 100 kilometers. The novel <a href="http://en.wikipedia.org/wiki/LIDAR">LIDAR</a> (“light detection and ranging”) system could have applications from precision manufacturing lines on <a title="Earth" href="http://highdefinitionsurveys.com/tag/earth/">Earth</a> to maintaining networks of satellites in perfect formation, creating a giant <a title="space" href="http://highdefinitionsurveys.com/tag/space/">space</a>-based platform to search for new planets.</p>
<p class="body"><a title="LIDAR" href="http://highdefinitionsurveys.com/tag/lidar/">LIDAR</a> transmits light through the air and analyzes the weak reflected signal to measure the distance, or range, to the target. <a title="NIST" href="http://highdefinitionsurveys.com/tag/nist/">NIST</a>’s new LIDAR, described in Nature Photonics,* has a unique combination of <a title="capabilities" href="http://highdefinitionsurveys.com/tag/capabilities/">capabilities</a>, including precision, rapid updates from multiple reference <a title="points" href="http://highdefinitionsurveys.com/tag/points/">points</a> at the same <a title="time" href="http://highdefinitionsurveys.com/tag/time/">time</a>, and minimal “measurement ambiguity.” The system can update measurements to multiple targets simultaneously every 200 microseconds. Measurement ambiguity in a LIDAR system is due to the fact that, if the target is at long range from the instrument, the system can’t distinguish between two different distances that are multiples of its “ambiguity range.” The new NIST LIDAR has a comfortably large ambiguity range of at least 1.5 meters—large enough to check the coarse distance with widely available <a title="technologies" href="http://highdefinitionsurveys.com/tag/technologies/">technologies</a> such as GPS.</p>
<p class="body">No other ranging system offers this combination of features, according to the new paper. NIST’s LIDAR could enable multiple satellites to maintain tight spacing and pointing while flying in precision formations, acting as a single research instrument in space, the paper states. Formation flying has been proposed as a means to enhance searches for extraterrestrial planets, enable imaging of black holes with multiple X-ray telescopes on different satellites, and support tests of <a title="general" href="http://highdefinitionsurveys.com/tag/general/">general</a> relativity through measurements of satellite spacing in a gravitational field. The new LIDAR could enable continuous comparisons and feedback of distances to multiple reference points on multiple satellites. There also may be applications in automated manufacturing, where many parts need to fit together with tight tolerances, according to Nate Newbury, the principal investigator.</p>
<p class="body">NIST’s LIDAR <a title="design" href="http://highdefinitionsurveys.com/tag/design/">design</a> derives its power from combining the best of two different approaches to absolute distance measurements: the <a title="time-of-flight" href="http://highdefinitionsurveys.com/tag/time-of-flight/">time-of-flight</a> method, which offers a large ambiguity range, and interferometry, which is ultraprecise. The LIDAR relies on a pair of optical frequency combs, tools for precisely measuring different colors (or frequencies) of light. The frequency combs used in the LIDAR are based on ultrafast-pulsed fiber lasers, which are potentially smaller and more portable than typical combs that generate laser light from crystals. The two combs operate at slightly different numbers of pulses per second. Pulses from one comb are reflected from a moving target and a stationary reference plane. The second comb serves as precise timer to measure the delay between the reflections returning from the target and from the reference plane. A computer calculates the distance between the target and the reference plane by multiplying the time delay by the speed of light.</p>
<p class="body"><span>* I. Coddington, W.C. Swann, L. Nenadovic and N.R. Newbury. Rapid, precise absolute distance measurements at long range. Nature Photonics. Published online May 24, 2009.</span></p>
<p class="body"><a title="Media" href="http://highdefinitionsurveys.com/tag/media/">Media</a> Contact: Laura Ost, <a href="mailto:laura.ost@nist.gov">laura.ost@nist.gov</a>, (303) 497-4880</p>
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