<html>
<body>
Hi Kevin,<br><br>
<x-tab> </x-tab>Thanks for
your reply. Interesting perspectives on a new (to me) GIS
culture.<br><br>
<x-tab> </x-tab>In JOSM, I
noticed that although the Bing air photo layer was turned on, the photo
itself was labeled Digital Globe. Does Digital Globe supply Bing
images? Just curious, they are always referred to as different
products.<br><br>
<x-tab> </x-tab><x-tab>
</x-tab>Thanks, Cheers .
. . . . . . . Spring<br><br>
<br><br>
At 08-05-2015 09:04 Friday, Kevin Bullock wrote:<br>
<blockquote type=cite class=cite cite="">>>it still concerns me
that untrained users can move the imagery around at a whim<br><br>
completely agreed; not only in this Nepal activation but for all
OpenStreetMap work!<br><br>
>>Perhaps a lower cutoff angle could be adopted to filter out
images of high distortion and displacement.<br><br>
this is our typical operational procedure, so the imagery you’ll see in
Bing Maps, and Mapbox Satellite has these characteristics. <br><br>
>>Are your satellite orbits geostationary or do they move
longitude-wise with each pass? <br><br>
our satellites (and most Earth Oberservation satellites) are in “Low
Earth Orbit” at around 600-800 km. By comparison, Geostationary is over
35,000 km! Geo is far too distant to make high resolution observations.
DigitalGlobe satellites are in a Sun Synchronous orbit meaning they orbit
from North Pole to South Pole in an approximate 90 min revolution. So
each satellite makes about 15 Earth orbits per day. In fact, all of the
orbit information is public domain data found here:
<a href="http://www.celestrak.com/NORAD/elements/master.asp">http</a>
<a href="http://www.celestrak.com/NORAD/elements/master.asp">
://www.celestrak.com/NORAD/elements/master.asp</a> <br><br>
Regards, Kevin <br><br>
This electronic communication and any attachments may contain
confidential and proprietary information of DigitalGlobe, Inc. If you are
not the intended recipient, or an agent or employee responsible for
delivering this communication to the intended recipient, or if you have
received this communication in error, please do not print, copy,
retransmit, disseminate or otherwise use the information. Please indicate
to the sender that you have received this communication in error, and
delete the copy you received. <br><br>
DigitalGlobe reserves the right to monitor any electronic communication
sent or received by its employees, agents or representatives.
</blockquote></body>
</html>