Adrian J. Hooke wrote:
> At 02:56 PM 6/13/2002 -0400, David Carek wrote:
>
>> I'm looking for existing satellites that use IP or other Internet
>> protocols on board or in their air to ground communications. If you
>> know of any currently flying satellites with such capabilities I'd
>> appreciate the references.
>
>
> David: what problems are you trying to solve, and why?
...
> And in what operational configurations are you trying to solve them?
I'm trying to identify available options for an IP compliant LEO science
satellite, including susbsystem communications on-board as well as
command, control, and telemetry to/from ground. Two communications
paths would exist: One direct LEO to ground; and one to ground via
TDRSS(GEO).
A collegue and I have been tasked to write a communications architecute
paper for such a system, that uses only Internet protocols end to end.
Obviously, mission requirements and budget would ultimately define what
is used on a real mission, but this is just a cut at a generic mission.
The problem is, that I keep coming up with more reasons not to use
Internet protols, than reasons to use them. Having worked on flight
software I know the value in minimizing the SLOC count and complexity of
flight code. I supposed if a "flight qualified" stack were available,
it would be much more readily accepted. I personally like the SCPS
specifications, but I've been asked to try to identify options using
only current Internet standards. This creates a problem, in that some
application level protocol will be necessary ... so I'm kind of back in
the non-standards realm. That's why I wanted to see if anybody has
already done this, and to what extent.
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