4 ms·
Ah, those numbers are from the Viasat earnings calls and some rough estimates. Each Viasat-3 satellite will have about 1 Tbps capacity and have a lifetime of 15
by matmatmatmat 5y ago
Ah, those numbers are from the Viasat earnings calls and some rough estimates. Each Viasat-3 satellite will have about 1 Tbps capacity and have a lifetime of 15 years. I don't know about cost, but Viasat-2 was in the neighborhood of $300e6, so, I assumed the same for Viasat-3. Viasat-4 is claimed to have a capacity of 3-5 Tbps and I assume a similar lifetime.
Now, these numbers are all well and good, but they don't include the cost of the ground system and the terminals, and I don't know what those will be. But, I would expect them to be cheaper, most crucially because GEO gives you more flexibility in where you place ground stations (vs LEO) and once you aim the dish, you pretty much never have to move it (LEO dishes spend their whole life slewing to match the satellites; it turns out that requires some parts that aren't so cheap.)
Anyway, I don't know what Starlink or Viasat's pricing will be in a few years, but I think Viasat will have a competitive edge in terms of overall cost.
Latency is definitely an issue for some users and some applications. If you watch what Hughes has been saying for years, it's that the future is hybrid, where a terminal uses both LEO and GEO, for what they're best suited for (i.e., interactive traffic over LEO, big, cheap bulk bits over GEO.) If you Google a bit, you can see the Viasat press releases alluding to this same capability. I don't know if/when that tech will make it to residential service, but I would expect that if there's unmet market demand, they'll get it out there.