can some gurus describe the air def env .. and role of different radars etc ..??
Hi....Akash system employs 2 radars 3D-CAR for long range survillance & multi-function phased-array radar called Rajendra which is the main FCR for Akash.
Now suppose there are more than one aircraft attacking a city simultaneously from one direction. A conventional surface-to-air missile system has a radar tracking a target. One radar handles one target. When the second target comes, it will have to leave the first. So you need more radars. This is where Rajendra come in. It is a multi-function radar. It will guide the missile, track multiple targets, and will do surveillance all at the same time.
Consider the deployment scenerio for Delhi. Rajendra looks for threats all around Delhi, finds out targets are coming. Once the target is within the kill zone i.e 25 KM, the control centre will assign the target. The assignment has to be accepted by the battery, and priority is given. Then the launcher is readied and checked. The moment the target gets assigned, the missile gets powered. Rajendra will know when the target will reach the optimum kill zone. When it happens, the missile is fired. When the missile flies, the radar tracks it.
Each Akash battery has a single Rajendra radar which is linked to up to 4 Akash launchers, each with 3 missiles. Each Rajendra radar can guide up to 2 of these missiles against a single target, which means it can guide eight missiles simultaneously towards 4 targets.
A single Akash missile has an 88% Probability of kill. Two missiles can be fired, five seconds apart, to raise the Probability of Kill to 98.5%.
I hope it helps....