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<p>Good morning Robert et al.,<br>
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<p>1) We used two USGS benchmarks and 4 RTK points that were measured from a TotalStation for the location of six terrestrial LiDAR targets which are also in the eBee flight are and the octocopter flight lines. Both drones have flight planning software and
GPS which keep them on their flight lines. The operator only takes over to launch and land the octocopter before flipping on autopilot.<br>
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<p>2) The eBee beams its position back to a Microsoft Surface tablet and you can usually keep an eye on it with your naked eye - or at least a pair of binoclars. The Octocopter is similar and has a laptop that broadcasts its position. It only travelled about
300 meters from the launch location so it was visible during the entire flight. They kept one pair of hawk eyes on their $$$ piece of equipment at all moments while it was in the air and another pair of eyes on the voltage meter on the controls to make sure
it was never approaching its flight time limit.<br>
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<p>3) Yes - the final product includes an orthorectified image and a point cloud from Structure from Motion for the eBee and a full LiDAR point cloud (100+ ppsm) with co-rectified hyperspectral data associated with each point. <br>
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<p>We will be using the terrestrial laser scans to validate the accuracy of both the octocopter LiDAR and eBee point cloud. The idea is that if we can see 'true' ground with the octocopter LiDAR and the manned aircraft LiDAR that was recently flown by USGS/Woolpert,
and the eBee can estimate the height of the grass accurately that we can use eBee flights in the future to monitor production and utilization of the grassland and shrublands.<br>
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<p>I'll be sure to share the results with everyone once we've got some!<br>
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<font face="Courier New, monospace">Tyson L. Swetnam<br>
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Associate Research Scientist</font></div>
<div class="PlainText"><span style="font-family:'Courier New',monospace; font-size:10pt">School of Natural Resources and Environment</span></div>
<div class="PlainText"><font face="Courier New, monospace"><a tabindex="0" href="https://sites.google.com/a/email.arizona.edu/tyson-swetnam/" id="NoLP">Personal website</a></font></div>
<div class="PlainText"><font face="Courier New, monospace">Email: tswetnam@email.arizona.edu<br>
Office Phone: (520)621-1052</font></div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> UAS <uas-bounces@list.cals.arizona.edu> on behalf of Macarthur, Robert - (robmac) <robmac@ag.arizona.edu><br>
<b>Sent:</b> Monday, October 12, 2015 7:48 AM<br>
<b>To:</b> Mcclaran, Mitchel P - (mcclaran); uas@list.cals.arizona.edu<br>
<b>Subject:</b> Re: [UAS] Youtube vide from UAS flights on Walnut Gulch yesterday</font>
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<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif"; color:#1F497D">Way cool!</span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif"; color:#1F497D">Questions, mostly about the post-processing: 1.) how do you ground truth? Put markers on the ground for known coordinates? Or do you even need that with the LiDAR? 2.)
How does the person running the drone keep on even scans/swaths? 3.) Is the finished product orthoganal-ized and how are the recorded swaths stitched together? (May be behind the times on how this)</span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif"; color:#1F497D">Our neighbor was flying a drone the other night – held it over our back yard briefly while Penny and I were outside boozing – really creepy….</span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt; font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt; font-family:"Tahoma","sans-serif""> UAS [mailto:uas-bounces@list.cals.arizona.edu]
<b>On Behalf Of </b>Mcclaran, Mitchel P - (mcclaran)<br>
<b>Sent:</b> Friday, October 9, 2015 3:21 PM<br>
<b>To:</b> uas@list.cals.arizona.edu<br>
<b>Subject:</b> [UAS] Fw: Youtube vide from UAS flights on Walnut Gulch yesterday</span></p>
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<p class="MsoNormal" style="background:white"><b><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:black">From:</span></b><span style="font-size:11.0pt; font-family:"Calibri","sans-serif"; color:black"> Swetnam, Tyson L - (tswetnam)<br>
<b>Sent:</b> Friday, October 9, 2015 2:41 PM<br>
<b>To:</b> Mcclaran, Mitchel P - (mcclaran); Heilman, Phil; Temuulen Tsagaan Sankey<br>
<b>Cc:</b> Barron-Gafford, Greg A - (gregbg); Van Leeuwen, Willem J - (leeuw); SNRE Business Office; Marsh, Stuart E - (smarsh)<br>
<b>Subject:</b> Youtube vide from UAS flights on Walnut Gulch yesterday</span><span style="font-family:"Calibri","sans-serif"; color:black">
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<p style="background:white"><span style="font-family:"Calibri","sans-serif"; color:black">All,</span></p>
<p style="background:white"><span style="font-family:"Calibri","sans-serif"; color:black"> </span></p>
<p style="background:white"><span style="font-family:"Calibri","sans-serif"; color:black">Linked is a video of Teki's UAV flights at Kendall Grassland on Walnut Gulch Experimental Watershed yesterday.</span></p>
<p style="background:white"><span style="font-family:"Calibri","sans-serif"; color:black"> </span></p>
<p style="background:white"><span style="font-family:"Calibri","sans-serif"; color:black"><a href="https://youtu.be/YpNIWaFXQs4">https://youtu.be/YpNIWaFXQs4</a></span></p>
<p style="background:white"><span style="font-family:"Calibri","sans-serif"; color:black"> </span></p>
<p style="background:white"><span style="font-family:"Calibri","sans-serif"; color:black">More to come once the data are processed!</span></p>
<p style="background:white"><span style="font-family:"Calibri","sans-serif"; color:black"> </span></p>
<p style="background:white"><span style="font-family:"Calibri","sans-serif"; color:black">Cheers,</span></p>
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<p class="MsoNormal" style="background:white"><span style="font-size:10.0pt; font-family:"Calibri","sans-serif"; color:black"> <br>
</span><span style="font-size:10.0pt; font-family:"Courier New"; color:black">Tyson L. Swetnam<br>
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Associate Research Scientist</span><span style="font-size:10.0pt; font-family:"Calibri","sans-serif"; color:black"></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-size:10.0pt; font-family:"Courier New"; color:black">School of Natural Resources and Environment</span><span style="font-size:10.0pt; font-family:"Calibri","sans-serif"; color:black"></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-size:10.0pt; font-family:"Courier New"; color:black"><a href="https://sites.google.com/a/email.arizona.edu/tyson-swetnam/" id="NoLP">Personal website</a></span><span style="font-size:10.0pt; font-family:"Calibri","sans-serif"; color:black"></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-size:10.0pt; font-family:"Courier New"; color:black">Email:
<a href="mailto:tswetnam@email.arizona.edu" id="NoLP">tswetnam@email.arizona.edu</a><br>
Office Phone: (520)621-1052</span><span style="font-size:10.0pt; font-family:"Calibri","sans-serif"; color:black"></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-size:10.0pt; font-family:"Courier New"; color:black">Cellular Phone: (520)247-2293</span><span style="font-size:10.0pt; font-family:"Calibri","sans-serif"; color:black"></span></p>
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