WhoGivesAFig? wrote:
wrote:
Mxsmanic wrote:
writes:

Such as?

Such as the need for local transmitters at every airport. LAAS
requires this,
and since WAAS cannot match ILS precision, LAAS is required if ILS is
to be
fully replaced.

What about multipath?



LAAS uses one frequency to upload the corrections necessary for CAT 2
and 3. IAW, one VHF uplink.

Jam it or lose it and you lost all your CAT 2 or 3

Single Thread is not good


Look at this link

Notice the VHF uplink

JUST ONE

Not good

http://en.wikipedia.org/wiki/Local_A...ntation_System

Maybe a LAAS and a JPALS as a backup may be a good
redundancy plan??

I say it must be done that way if you remove the ILS systems