govardhanks wrote:These questions are about missiles i could't find a definite answer for it.
1. After a missile like Agni is produced, for how many years it will be in functional state?
2. I have read that radar system like AWACS can focus their radar beams and can destroy the missile'e electronic equipment. Is it possible if so how many missiles it can destroy?
3. Can a missile function without the help satellites?
1. Usually it is 5 yrs, but that is variable, and secret (also depends on the solid state fuel used), so no one knows
2. Not at present power levels and accuracy. The level of beam focus required would call for extremely low sidelobes and extremely small beams, within which all the power can be concentrated. Then, this beam has to be steered so fast that it must keep lock on the missile. Then, the power within that beam itself must be so high as to be able to burn through or blind the 'tronics.
Otherwise, it will only shine a torch to the missile saying "I'm here, hit me!". None of these exist practically at present, so we stick to equally effective countermeasure suites. Directed IR Countermeasures, on the other hand, are very very practical and are being tested. The directed rf has problems.
As for the jamming thing... jamming is usually applied to active signals that are coming at you, which prevents detection. Missiles are getting smarter and smarter, and usually catch this jamming, and sometimes use that as well, to provide a sort of homing beacon. It may work, but usually, jamming needs to be done before the guy fires off his stores at you, rather than after (of course, if the missile is being guided by his radar, then, there is always a good idea to jam his radar, but generally, missiles come with their own seekers today, either IR or RF).
3. Yes... if it doesn't depend on GPS it can, and most don't rely on sats for homing... they may use sat signals, but mostly for initial targeting, after which they use the digital map and inertial guidance. Else, there are other methods of guidance, most of which dont require sats