Another internet/Communication system

[Prober]

In advance sorry for posting in this way......tired, but have run into a wall with a project.

We all remember Hubble predecessor viewed the earth.   The basic design was modified to search the universe.
Have always been amazed by the Spektr-R satellite concept and Radio Telescopes in General.

http://forum.nasaspaceflight.com/index.php?topic=15589.msg356544#msg356544

So this is a what if....... Brainstorming thread

What if we made an uber large parabolic reflector facing earth for communication.
Envision 2-4 of these reflector packages for full earthwide coverage.
Have a lot of ideas floating around on this atm, but I fall short in Orbital mechanics.  So for sake of discussion lets say the plan is a ISS sized reflector aprox 73 meters end to end. 

What Orbit would you recommend?

Northern Hemisphere
Southern Hemisphere 

===========================================
Lot's of other possibilities building on this basic idea. 
Both sides of the dish could be used. One for earth communications, one for Space. 
This might become dual use or basis for a solar shield over the poles.  Because of its size it will cast some type of shadow .
Seen somewhere projects for a polar sun shield.  If you have any official NASA program name(s) or linkage it would be appreciated.

thanks again.

[mfck]

In advance sorry for posting in this way......tired, but have run into a wall with a project.

We all remember Hubble predecessor viewed the earth.   The basic design was modified to search the universe.
Have always been amazed by the Spektr-R satellite concept and Radio Telescopes in General.

http://forum.nasaspaceflight.com/index.php?topic=15589.msg356544#msg356544

So this is a what if....... Brainstorming thread

What if we made an uber large parabolic reflector facing earth for communication.
Envision 2-4 of these reflector packages for full earthwide coverage.
Have a lot of ideas floating around on this atm, but I fall short in Orbital mechanics.  So for sake of discussion lets say the plan is a ISS sized reflector aprox 73 meters end to end. 

What Orbit would you recommend?

Northern Hemisphere
Southern Hemisphere 

===========================================
Lot's of other possibilities building on this basic idea. 
Both sides of the dish could be used. One for earth communications, one for Space. 
This might become dual use or basis for a solar shield over the poles.  Because of its size it will cast some type of shadow .
Seen somewhere projects for a polar sun shield.  If you have any official NASA program name(s) or linkage it would be appreciated.

thanks again.

Full coverage with 2-4 dishes means (IMO) a circular orbit.
If you are in circular orbit you cannot (again, IMO) have a preferred hemisphere, unless you are in GSO, which increases your latency (same goes for highly elliptical orbits, that let you have a preferred hemisphere)

73m dish is insignificant as a shadow, yet again - IMO

[Prober]

In advance sorry for posting in this way......tired, but have run into a wall with a project.

We all remember Hubble predecessor viewed the earth.   The basic design was modified to search the universe.
Have always been amazed by the Spektr-R satellite concept and Radio Telescopes in General.

http://forum.nasaspaceflight.com/index.php?topic=15589.msg356544#msg356544

So this is a what if....... Brainstorming thread

What if we made an uber large parabolic reflector facing earth for communication.
Envision 2-4 of these reflector packages for full earthwide coverage.
Have a lot of ideas floating around on this atm, but I fall short in Orbital mechanics.  So for sake of discussion lets say the plan is a ISS sized reflector aprox 73 meters end to end. 

What Orbit would you recommend?

Northern Hemisphere
Southern Hemisphere 

===========================================
Lot's of other possibilities building on this basic idea. 
Both sides of the dish could be used. One for earth communications, one for Space. 
This might become dual use or basis for a solar shield over the poles.  Because of its size it will cast some type of shadow .
Seen somewhere projects for a polar sun shield.  If you have any official NASA program name(s) or linkage it would be appreciated.

thanks again.

Full coverage with 2-4 dishes means (IMO) a circular orbit.
If you are in circular orbit you cannot (again, IMO) have a preferred hemisphere, unless you are in GSO, which increases your latency (same goes for highly elliptical orbits, that let you have a preferred hemisphere)

73m dish is insignificant as a shadow, yet again - IMO

thanks for starting this out...
might have been my poor choice of words.       So for sake of discussion (factor this in)

The technology to assemble a super sized shield, and a very high power, super sized communication dish have similarities.  So the idea was to NOT re-invent the wheel, so to speak.

[Prober]

errr having some issues finding what i'm looking for help!

one such system is based in L1

another is a very old NASA power system located in a geosynchronous orbit @ 36,000 miles.

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some reading material : http://www.dailymail.co.uk/sciencetech/article-2004454/Huge-mirrors-sky-future-tackling-climate-change-claim-scientists.html