JSF future will depend on Natural gas fracking. if the wells become dry (less profitable) in less than 10 years. there will no competitive energy for US economy. so they will have to cut down in big way.

Shale oil may save the US economy.

There is no free lunch.

Multi-static or using multiple radars to collectively track a target introduces another set of problems. Range data from each reciever needs to be collected and analyzed. Any latency in data transmission, and there will be latency in any transmission, causes timing errors during triangulation. You can reduce the impact of latency by introducing metadata time tags to each receiver’s range data, but that requires you to have very accurate clocks at each receiver and a reliable way to synchronize those clocks.

You pretty much answered your own problem.

The step you don’t answer is satellite based synchronisation – with every ground set able to determine its distance from satellite through reflected transmission.

The real issue might be getting the data transmitted in a form coherent enough to be useful – but – with progress in communications bandwidth, both wired and wireless stepping forward on an almost daily basis – that is only a matter of time.

Nah… It’s going to get too heavy, unable to pull at least 5 times the G of
current or future fighters.

Ahh, see but thats the beauty of it – ‘cos its persistent, it doesn’t need to kill first time.

Every time the opposition fighter has to maneuvre to avoid kill, it bleeds kinetic energy – the persistent missile, with the better T/W and T/D will always bleed less and regain its energy level quicker.

In the long term (minutes) energy persistence fight – it’ll just keep going till the fighter is so low on KE that g’s won’t matter a damn at that point.

Its a different slant on Boyd’s doctrine.

Is it possible to get a rough-estimate of the stealth target using VHF/UHF radar, then launch an intercepting aircraft in the “guessed zone”, which can then use its own radar to further “fine-tune” the targets position and launch a missile.

Yep. Although it would not be limited to radar only

Even more beneficial would be launching a persistent missile, like a ramjet powered missile with endurance of an hour or so.

With better T/W and L/D ratios than any fighter, without g limits, with combined feed from its own sensors and from ground, it would be able to intercept or at the very least mission kill any aircraft, VLO or not.

If it succeeded only in mission kill, it could even be programmed to return to launch site for refuelling.

Maybe THAT (rather than the 230kg mechanical v1) is the baseline for the 100kg reduction in the v3?

Very possible.

Wouldn’t be the first time I’ve got the wrong end of the stick.

What’s the equivalent for LO aircraft?

Microsoft Powerpoint.

What kind of range with internal fuel & AAM.

Go google it for yourself – not like its hard to find!

and it certainly lacks electronic scanning radar. which will add considerable weight to already overweight fighter. Its replacement is smaller and lighter aircraft. so more quantity can be carried.

Errrr – wrong answer.

AESA radar sets are considerably lighter than the old mechanical equivalents.