Hi Greg
We built a tracking system, called RayGun, that includes L-band satellite connectivity using SMS messages for positional information (XMPP in higher bandwidth networks). The system has been successfully field tested with people, vehicles and aircraft. The biggest difficulty with L-band was uplink data transfer rates which limited our positional update rate to 10-20 seconds. There are other, higher bandwidth, more costly approaches. The RayGun client runs on iOS, Android, Windows Mobile and Java based phones and includes both a 2D and 3D front end. Our server, called GeoServer, is a full geographic streaming server with chat, VOIP, file sharing, sketching and many other multi-user functions. The consumer version can be seen at www.planet9.com/raygun/ .Please let me know if you would like to discuss this in more detail. David Colleen, CEO Planet 9 Studios 761 Kansas St. San Francisco, CA 94107 (O) +1 415 348 1200 (M) +1 415 254 2330 www.planet9.com Hi, We have a project that requires sending field data (including position measured from GPS) back to a server in areas without cell phone coverage. I presume that this means satellite-based communication. Does anyone have a good handle on what's possible in terms of data volume and who the relevant providers would be? We have test cases in Africa and Haiti but need to consider India and southeast Asia as well. In the medium term, we are interested in two-way communication. Suggestions on the field devices are also welcome...we will presumably be working with something like Android phones but aren't set on this yet. TIA, Greg _______________________________________________ Geowanking mailing list [email protected] http://geowanking.org/mailman/listinfo/geowanking_geowanking.org
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