Originally Posted by
Pontius Navigator
Are you suggesting stacked beam height finding rather than a nodder?
I don't think I've seen a nodder in years. The more modern three dimensional radars are usually stationary antennas with electronically scanned/steered beams. There are also stacked beams and multipath radars that do the same. Not sure what the new MADGE system is.
When an aircraft is maneuvering the size of the primary response can vary considerably particularly aircraft with large vertical surfaces like the T7. All I was pointing out was that sudden increases in signal can cause quite large errors in the primary systems height finding.
I think that the last nodder I watched was at Lindholme
