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<p class="MsoNormal">Brian,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Good afternoon. The Flood Control District currently uses DJI products for our design projects. We use Bentley ContextCapture and ESRI Drone2Map for SFM processing. Drone2Map is a backup and not used very often. We have our surveyor set
ground control and I use the Propeller AeroPoint GPS mats. These GPS targets are extremely helpful when flying in remote areas where typical photo id ground control is hard to find or there is no time for a surveyor to set targets. Very accurate and very easy
to use.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">As far as DJI, I will never purchase another DJI product, here at work or for personal use. They are absolutely wonderful aircraft and I work them hard in 105+ degrees heat. I wholeheartedly agree with the federal government crackdown and
have been unhappy with their involvement in Ukraine.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">My next purchase will be a fixed wing aircraft – Quantum Systems Trinity F90+ or the Wingtra One GEN II. My wife flies drone for The National Weather Center and NOAA and uses the Trinity F90+ and loves it. She and I both have been looking
for drones comparable to DJI and they are hard to find. I’m not impressed with the Skydio 2 system. It doesn’t seem as functional as the Mavic systems.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have several projects that I have used to present a PowerPoint presentation to local folks. If you like I can ftp them to you to look over.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Sincerely,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b><span style="color:#1F497D">Joseph G. Wagner<o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="color:#1F497D">Mapping, Surveying, and CAD Manager<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Drone Program Manager<o:p></o:p></span></p>
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<p class="MsoNormal" align="right" style="margin-bottom:6.0pt;text-align:right"><a href="http://www.fcd.maricopa.gov/"><span style="color:#1F497D;text-decoration:none"><img border="0" width="72" height="72" style="width:.75in;height:.75in" id="Picture_x0020_1" src="cid:image001.png@01D8A1D9.BDE3AEA0" alt="FCD"></span></a><span style="color:#1F497D"><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="color:#1F497D">Flood Control District of Maricopa County<o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="color:#1F497D">2801 W Durango St, Phoenix, AZ 85009<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">(O) 602-506-2203 (C) 623-297-2638<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><a href="mailto:Joe.wagner@maricopa.gov">Joe.wagner@maricopa.gov</a><o:p></o:p></span></p>
<p class="MsoNormal"><a href="http://www.maricopa.gov/floodcontrol">www.maricopa.gov/floodcontrol</a><span style="font-size:9.0pt;color:#1F497D"><o:p></o:p></span></p>
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<p class="MsoNormal"><i><span style="font-size:9.0pt;color:#1F497D"><o:p> </o:p></span></i></p>
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<p class="MsoNormal"><b>From:</b> UAS <uas-bounces@list.cals.arizona.edu> <b>On Behalf Of
</b>Gillan, Jeffrey Kent - (jgillan)<br>
<b>Sent:</b> Wednesday, July 27, 2022 3:57 PM<br>
<b>To:</b> Gootee, Brian F. - (bgootee) <bgootee@arizona.edu>; Rahr, Matt - (rahr) <rahr@ag.arizona.edu>; Beers, Rebecca - (rebeccabeers) <rebeccabeers@arizona.edu>; uas@list.cals.arizona.edu<br>
<b>Subject:</b> Re: [UAS] DJI drones vs American drones<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-family:"inherit",serif">Hi Brian, <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"inherit",serif">I have a lot of experience surveying terrain with drones using RTK and ground control methods. I would be happy to chat with you any time about it. In general, RTK is fantastic but best referencing
practices could depend on your specific application. I have recently done some drone stuff with Ann Youberg on Mt. Lemmon. <o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">Jeff Gillan, Ph.D. <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">Data Scientist III | Drone Pilot<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">School of Natural Resources & Environment<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">University of Arizona<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">gillanscience.com<o:p></o:p></span></p>
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<p class="MsoNormal"><a href="tel:(530)339-5975"><span style="font-size:12.0pt">(530)339-5975</span></a><span style="font-size:12.0pt;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="color:black">From:</span></b><span style="color:black"> UAS <</span><a href="mailto:uas-bounces@list.cals.arizona.edu">uas-bounces@list.cals.arizona.edu</a><span style="color:black">> on behalf of Gootee, Brian F. - (bgootee)
<</span><a href="mailto:bgootee@arizona.edu">bgootee@arizona.edu</a><span style="color:black">><br>
<b>Sent:</b> Wednesday, July 27, 2022 3:40 PM<br>
<b>To:</b> Rahr, Matt - (rahr) <</span><a href="mailto:rahr@ag.arizona.edu">rahr@ag.arizona.edu</a><span style="color:black">>; Beers, Rebecca - (rebeccabeers) <</span><a href="mailto:rebeccabeers@arizona.edu">rebeccabeers@arizona.edu</a><span style="color:black">>;
</span><a href="mailto:uas@list.cals.arizona.edu">uas@list.cals.arizona.edu</a><span style="color:black"> <</span><a href="mailto:uas@list.cals.arizona.edu">uas@list.cals.arizona.edu</a><span style="color:black">><br>
<b>Subject:</b> Re: [UAS] DJI drones vs American drones</span> <o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
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<p class="xmsonormal" style="margin:0in">Matt, <o:p></o:p></p>
<p class="xmsonormal" style="margin:0in"> <o:p></o:p></p>
<p class="xmsonormal" style="margin:0in">Nice to know about the pursuit for DJI drones is continuing. Their hardware and software are really good and stand up to time well.
<o:p></o:p></p>
<p class="xmsonormal" style="margin:0in"> <o:p></o:p></p>
<p class="xmsonormal" style="margin:0in">In addition we wonder who else is using structure-from-motion to build DEMs and what methods for georeferencing they are using. The purchase of a new drone with or without RTK and a GPS system are what is relevant to
us here. <o:p></o:p></p>
<p class="xmsonormal" style="margin:0in"> <o:p></o:p></p>
<p class="xmsonormal" style="margin:0in">Many thanks for your help. Brian<o:p></o:p></p>
<p class="xmsonormal" style="margin:0in"> <o:p></o:p></p>
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<p class="xmsonormal" style="margin:0in"><span style="color:black">Brian F. Gootee</span><o:p></o:p></p>
<p class="xmsonormal" style="margin:0in"><span style="color:black">Research Geologist, P.G. | Basin Analysis | Geologic Mapping | Tribal Liaison</span><o:p></o:p></p>
<p class="xmsonormal" style="margin:0in"><a href="http://azgs.arizona.edu/"><b><span style="color:#002060;text-decoration:none">Arizona Geological Survey</span></b></a><span style="color:black"> |
</span>University of Arizona<o:p></o:p></p>
<p class="xmsonormal" style="margin:0in"><a href="mailto:bgootee@email.arizona.edu"><span style="color:#0563C1">bgootee@arizona.edu</span></a>
<o:p></o:p></p>
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<p class="xmsonormal" style="margin:0in"> <o:p></o:p></p>
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<p class="xmsonormal" style="margin:0in"><b>From:</b> Rahr, Matt - (rahr) <<a href="mailto:rahr@ag.arizona.edu">rahr@ag.arizona.edu</a>>
<br>
<b>Sent:</b> Wednesday, July 27, 2022 3:03 PM<br>
<b>To:</b> Beers, Rebecca - (rebeccabeers) <<a href="mailto:rebeccabeers@arizona.edu">rebeccabeers@arizona.edu</a>>;
<a href="mailto:uas@list.cals.arizona.edu">uas@list.cals.arizona.edu</a><br>
<b>Cc:</b> Gootee, Brian F. - (bgootee) <<a href="mailto:bgootee@arizona.edu">bgootee@arizona.edu</a>><br>
<b>Subject:</b> RE: DJI drones vs American drones<o:p></o:p></p>
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<p class="xmsonormal" style="margin:0in"> <o:p></o:p></p>
<p class="xmsonormal" style="margin:0in">Hey Rebecca and Brian,<o:p></o:p></p>
<p class="xmsonormal" style="margin:0in"> <o:p></o:p></p>
<p class="xmsonormal" style="margin:0in">Let’s ask the UAS User Group. We just bought a DJI Mavic 3 and have two other DJI drones, and agree, they’re great for the price.
<o:p></o:p></p>
<p class="xmsonormal" style="margin:0in"> <o:p></o:p></p>
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<p class="xmsonormal" style="margin:0in"><b>From:</b> Beers, Rebecca - (rebeccabeers) <<a href="mailto:rebeccabeers@arizona.edu">rebeccabeers@arizona.edu</a>>
<br>
<b>Sent:</b> Wednesday, July 27, 2022 12:31 PM<br>
<b>To:</b> Rahr, Matt - (rahr) <<a href="mailto:rahr@ag.arizona.edu">rahr@ag.arizona.edu</a>><br>
<b>Cc:</b> Gootee, Brian F. - (bgootee) <<a href="mailto:bgootee@arizona.edu">bgootee@arizona.edu</a>><br>
<b>Subject:</b> DJI drones vs American drones<o:p></o:p></p>
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<p class="xmsonormal" style="margin:0in"> <o:p></o:p></p>
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<p class="xmsonormal" style="margin:0in"><span style="font-size:12.0pt;color:black">Hi Matt,</span><o:p></o:p></p>
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<p class="xmsonormal" style="margin:0in"><span style="font-size:12.0pt;color:black"> </span><o:p></o:p></p>
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<p class="xmsonormal" style="margin:0in"><span style="font-size:12.0pt;color:black">This is Rebecca Beers at the AZ Geological Survey. My colleague (Brian-copied) and I are curious if the University has a recommendation on an American-made drone? We are looking
to purchase a new drone for our department, but I remember an email coming out a while ago stating that the University may not allow Chinese-made drone (DJI) in the future over concerns of metadata leaks. Have you heard anything else on this? We really like
our seamless functionality of DJI, but we are curious if you have found any American-made drones with similar capabilities as the DJI drones? Or has the University stepped back on the concerns of DJI metadata leaks?</span><o:p></o:p></p>
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<p class="xmsonormal" style="margin:0in"><span style="font-size:12.0pt;color:black"> </span><o:p></o:p></p>
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<p class="xmsonormal" style="margin:0in"><span style="font-size:12.0pt;color:black">Thank you, and we appreciate any guidance you have on this,</span><o:p></o:p></p>
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<p class="xmsonormal" style="margin:0in"><span style="font-size:12.0pt;color:black">-Becky</span><o:p></o:p></p>
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<p class="xmsonormal" style="margin:0in"><span style="font-size:12.0pt;color:black"> </span><o:p></o:p></p>
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<p class="xmsonormal" style="margin:0in"><span style="font-size:12.0pt;color:black"> </span><o:p></o:p></p>
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<p class="xmsonormal" style="margin:0in"><span style="font-size:12.0pt;color:black">---</span><o:p></o:p></p>
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<p class="xmsonormal" style="margin:0in"><span style="font-size:12.0pt;color:black">Rebecca Beers</span><o:p></o:p></p>
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<p class="xmsonormal" style="margin:0in"><span style="font-size:12.0pt;color:black">Research Geologist III</span><o:p></o:p></p>
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<p class="xmsonormal" style="margin:0in"><span style="font-size:12.0pt;color:black">Arizona Geological Survey,</span><o:p></o:p></p>
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<p class="xmsonormal" style="margin:0in"><span style="font-size:12.0pt;color:black">University of Arizona</span><o:p></o:p></p>
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<p class="xmsonormal" style="margin:0in"><a href="http://www.azgs.arizona.edu" title="www.azgs.arizona.edu"><span style="font-size:12.0pt">www.azgs.arizona.edu</span></a><o:p></o:p></p>
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<p class="xmsonormal" style="margin:0in"><a href="mailto:rebeccabeers@email.arizona.edu"><span style="font-size:12.0pt">rebeccabeers@email.arizona.edu</span></a><o:p></o:p></p>
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