Quote:
Originally Posted by Piotrsko
I would guess the radar altimeter satellites have a aperture resolution issue, and I knew there weren't a lot of tall buildings in either location I quoted, having been there personally.
Sorry no citations, don't remember what exactly I was watching last night other than PBS
Since no replies, further research says sat radar can see plain earth move the 3" & but they were noticing the Faa published heights were changing during some unrelated scientific study. Pbs terra about the millenial tower sinking, I think.
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Judy Woodruff was talking to Miles O'Brian, their science correspondent, about it on the PBS NEWS HOUR.
There's actually an anal antenna under the fuselage which is interrogating ground level signal return for the IFR landing calculus.
Bandwidth scatter from 5G could adulterate the returns which the avionics process to calculate precise AGL data for the instrumented landings.
The FAA caught hell over the Boeing 800 MAX autopilot debacle, and they wanted to be out ahead on this one.