Commonwealth CA-23 Avionics

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gusmobile

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Hello to all
I was wondering if anyone has any information on the video Relay Radar System proposed for the CA-23. It is indicated that the relevant target information would come from a ground station to the plane thus, there would be so there would be no radar set fitted onboard. Was there any existing equipment in any other aircraft of that era that would have used such equipment? Thank you for your time.

Pete
 
SAGE developed a Radar Relay to take ground radar analogue radar signals and transmit them digitally over telephone lines to command centres.

The same technology could be used to transmit ground radar signals to aircraft, but this seems several orders of magnitude harder especially if you wanted to show the pilot where the target was from the pilot's position. Showing the radar picture from a ground radar would be hard to follow...
 
overscan (PaulMM) said:
SAGE developed a Radar Relay to take ground radar analogue radar signals and transmit them digitally over telephone lines to command centres.

The same technology could be used to transmit ground radar signals to aircraft, but this seems several orders of magnitude harder especially if you wanted to show the pilot where the target was from the pilot's position. Showing the radar picture from a ground radar would be hard to follow...
Click to expand...
The mathematical transformation is pretty simple, similar to the sort of stuff done in then contemporary director systems like Flyplane 5, but with slightly larger offset distances. It's not too different to the matrix/trig transformations we do in Helmet Mounted Displays to put the symbology in the right place relative to the pilot's head position.

After that, transmitting the track to the aircraft is the same amount and kind of data whether you transform it or not.
 
Yeah but you need to know accurately where the intercepting plane is.

I still think its a reach for 1950s avionics.
 
I think you'd roughly double the margin of error compared to a ground track alone, because you'd need to be tracking both target and interceptor to know the offsets. But that's not too different to GCI.

Didn't the Russians develop an even tighter ground to interceptor control loop not that much later?
 

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