FPOBN,
My company has a real time wake turbulence measurement system. The measurements are about every 3 seconds, and the measurements are taken at 500m, 1500m, and 2500m from threshold. The system measures a grid up to 300m high at each location. When the ac passes over the array, it begins measuring the wake turbulence.
You need to have three installations under the approach for each runway, is that correct? (Or four, including the 'wind profiler at 3000' (metres?) from the runway')
So the furthest out you can monitor in real time is about 2nm? Not sure this will help, as the UK only provides wake turbulence separation to 4nm out, and it is accepted that there is catch up inside of that as spacing compresses due to the speed reduction to landing stabilisation speed.
In short, after the system is up and operational for a period of time, ATC will be able to balance and blend the queue with the actual types of aircraft, and the associated loading, that are common for that runway.
Again, I'm not really sure what you're proposing here. What is 'balancing and blending the queue'?
Well, a great solution would be to implement GBAS. With that, you can get the mins down and open up the ops window a bit.
Can you expand on that please? are you talking about the minimum visibility/decision height in CAT III ops? It's not the landing minima that is the capacity issue with CAT III, it's the spacing required to protect the integrity of the ILS/MLS.