what is the quickest updating Ariel satellite imagery?

Question

such as google maps, globelexplorer, live search,ext

Answer 1

good question. I've figured google earth.
http://earth.google.com/download-earth.html
I know they have multiple companies that offer them images.
the more companies the more chances of updates
here's what they say
http://earth.google.com/support/bin/answer.py?answer=21414


the most up to date images available it seems
http://www.worldwindcentral.com/wiki/Add-on:Global_Clouds_%28near_realtime_clouds%29
part of
nasa world wind
http://www.worldwindcentral.com/wiki/NASA_World_Wind_Download

heres what THEY say about "Live" images


When was this imagery photographed?

That depends on the layer. The NLT Landsat, OnEarth Landsat and Geocover are from 1999 to 2003, with 2000 being the most active year. The Geocover 1990 was taken between 1987 and 1993. The USGS 1m Digital Ortho varies more. It was taken from 1990 to 2000. Search for a US location through TerraServer® and look for the USGS entry. The USGS Topo maps vary from within the past few years to several decades ago. Streets and building locations in particular may be quite out of date. USGS Urban Area Ortho dates from 2001 to 2004 and some areas are still being photographed and you can see the dataset ages at the USGS site.


Can I see the world in real-time?

This just isn't practical and won't be possible anytime soon. To do this requires a network of satellites dedicated to covering the earth. Just to provide as much detail as the base layers World Wind loads first, the camera resolution on each one has to total about 100 megapixels. Perhaps the military has such a network, but it is certainly off-limits to anyone else. The images have to be received on the ground and processed. Then they all have to be combined where they overlap and corrected for the distortion caused by the earth's curvature. Finally after compressing the imagery from gigabytes down to several hundred megabytes, a server has to send it out to everyone. This requires an enormous amount of bandwidth for the server. Even if that weren't a problem, the internet connection for the majority of high-speed users is still too slow for more than about one update every hour.

Answer 2

Are they beginning off to replace now? The final time i became on there, the photos have been like 8 years previous, I knew this simply by fact a kin domicile hadn't been equipped yet !!! simply by fact of this i finished checking it out.

Answer 3

google earth rocks. thats as far as i know