PLA AEW&C, SIGINT, EW and MPA thread

[latenlazy]

I don't know where else to ask this but.... how exactly is China funding so many of these massive projects simultaneously? Building these ginormous radars ain't cheap at all, even if you have the advantage of China's economies of scale.

Money is not real. The human capital and material resources to keep them busy is what’s real.

 

[tphuang]

Money is not real. The human capital and material resources to keep them busy is what’s real.

Maybe someone should post a picture of China's Gallium advantage here so that people can understand.

Oh wait, I can do that.


99% market share.

 

[enroger]

right, that's what I was thinking. They just got so much better with processing and algo to get usable data for better resolution of the targets.

Also, for dual band solutions, maybe that's only something they figured out more recently and how to have receivers efficiently filter out signals that are not in the band it's sending. IDK, that seems possible.

I'm not sure how they implement this. Do you 1 set of antenna that have separate power amplifiers for 2 different bands and 1 layer that does filters and decide what to filter out and then process that.

Or do you have separate antennas? Not sure if that's how it works. Just thinking this through in my mind.

I also do think that based on what I've seen previously, you do need larger antenna for VHF band, so that could be the reason you can only do it on these back to back antenna.

I think at the very least there'd have to be separate antennas given that UHF and L-band has such huge difference in wavelength, someone more familiar with rf can chime in.

I speculated on the possibility of dual band system a couple pages back and a member gave some very good reasons why this is difficult, primarily with how to fit antennas of such a large scale difference packing close together and not interfering with each other. If KJ-3000 is really a dual band system like this then one wonders just what kind of black magic those CATIC guys are brewing....