How do ionospheric heaters like EISCAT work and what is ionospheric reflection?

[rockhouse]

Could someone explain to me what ionospheric heaters (like the one at EISCAT) do...in lay-mans terms?
And what exactly is ionospheric reflection...again, in lay-mans terms.
Thanks.

 

[rockhouse]

hmmm...no one?

 

[Evo]

Here you go.

http://www.eiscat.se:8080/about.html