LADEE did 622mbps from 385,000km (lunar orbit to earth’s surface) two years ago. https://en.wikipedia.org/wiki/Laser_communication_in_space#Flight_tests
Chris Wright Network Administrator Velociter Wireless 209-838-1221 x115 From: Af [mailto:[email protected]] On Behalf Of Bill Prince Sent: Tuesday, February 23, 2016 11:28 AM To: [email protected] Subject: Re: [AFMUG] Viasat-3 going up I think that would be a stretch. Getting laser to penetrate even 1 km if atmosphere is tough, and there is quite a bit more of that going straight up. bp <part15sbs{at}gmail{dot}com> On 2/23/2016 11:26 AM, Chuck McCown wrote: Do any of these newer satellites use laser as uplink? From: Eric Kuhnke<mailto:[email protected]> Sent: Tuesday, February 23, 2016 12:25 PM To: [email protected]<mailto:[email protected]> Subject: Re: [AFMUG] Viasat-3 going up An o3b terminal is an identical pair or motorized, tracking 1.8, 2.4 or 3.0 meter sized dishes. Make-before-break connection. There are some good videos online illustrating how it works. On Feb 23, 2016 10:22 AM, "Sean Heskett" <[email protected]<mailto:[email protected]>> wrote: If the satellite isn't in geo-synchronous orbit then how do you stay locked on to the signal? Do they have a constellation of satellites? -Sean On Tuesday, February 23, 2016, Chris Wright <[email protected]<mailto:[email protected]>> wrote: O3B altitude is 8062km. At that distance, it takes light about 27ms to travel. Multiply that by 4 (CPE -> Sat -> Gateway -> Sat -> CPE) and add a couple ms for frame processing, and you’re at 110ms latency to the provider. Chris Wright Network Administrator Velociter Wireless 209-838-1221 x115 From: Af [mailto:[email protected]] On Behalf Of Joe Novak Sent: Tuesday, February 23, 2016 7:15 AM To: [email protected]<mailto:[email protected]> Subject: Re: [AFMUG] Viasat-3 going up What kind of latency are we talking? Very interesting stuff. On Mon, Feb 22, 2016 at 3:04 PM, Eric Kuhnke <[email protected]<mailto:[email protected]>> wrote: The greatest thing currently happening in satellite telecommunications is not more geostationary ka-band capacity, but the market pricing in wholesale that has happened due to o3b. For locations anywhere below 45 degrees latitude o3b provides end to end trunking at a lot less latency, and lower prices then geostationary systems. Viasat and other owners of geostationary capacity have been required to drop the monthly recurring prices for wholesale transponder capacity. The big difference being that an o3b terminal is too expensive by far for an end user, it would be typically used by a medium to large sized Wireless ISP using point-to-multipoint technology for the individual customers. For example a WISP on a pacific island nation state that has no submarine fiber access. On Feb 21, 2016 9:13 PM, "Rory Conaway" <[email protected]<mailto:[email protected]>> wrote: http://www.fastcompany.com/3056618/fast-feed/these-terabit-satellites-will-bring-internet-to-the-remotest-places-on-earth Rory Conaway • Triad Wireless • CEO 4226 S. 37th Street • Phoenix • AZ 85040 602-426-0542<tel:602-426-0542> [email protected]<mailto:[email protected]> www.triadwireless.net<http://www.triadwireless.net> “The ultimate measure of a man is not where he stands in moments of comfort or convenience, but where he stands at times of challenge or controversy” – Martin Luther King
