Aerospace and Electronic Systems - May 2019 - 68
Review of High Throughput Satellites: Market Disruptions, Affordability-Throughput Map, and the Cost Per Bit/Second. . .
Figure 3.
Markets for HTS solutions.
Figure 4.
Throughput or latency: LEO HTS or GEO HTS.
become operational with a single satellite and can target,
as is currently the case, local or regional markets. A small
number of large GEO HTS, three for example for the
planned ViaSat-3 or the current Inmarsat Global Xpress
constellations, can provide global coverage, except for
regions at high latitudes. This is contrast with for example
the planned OneWeb LEO HTS constellation with over
600 (small) satellites. Table 1 lists some of the proposed
LEO and MEO HTS constellations. Some of the details
are either not available publically or are lacking and will
changed over time as the systems are matured and readied
for launch (within the 2019-2021 timeframe).
Given the current and expected markets for HTS discussed in "Markets for HTS: anchor tenant and growth
areas", it is not clear that "throughput or latency" is the
real important question. Affordability (cost per bit/s),
68
speed (user uplink/downlink), and convenience of user
terminals (small size) are likely to be the more critical
considerations for the adoption of HTS, at least in the near
term when near real-time requirements are not yet prevalent and for which latency is important.
THIS WOULD NOT HURT A BIT: CONSEQUENCES OF
HTS FOR SATELLITE OPERATORS AND
MANUFACTURERS
In "Dynamic Telecommunication Markets and HTS: A Brief
Overview" section, we introduced HTS and discussed their
basic technological features as well as their markets. We
now examine the market disruptions that are likely to be
brought by HTS and borne by satellite operators and
IEEE A&E SYSTEMS MAGAZINE
MAY 2019
Aerospace and Electronic Systems - May 2019
Table of Contents for the Digital Edition of Aerospace and Electronic Systems - May 2019
Contents
Aerospace and Electronic Systems - May 2019 - Cover1
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