It deviated of cource and the Interceptor was unable to intercept.
Imagine a scenario where the cource of the missile is not know, multiple missiles, with MIRVs countermeasures deployed then calculate the chances of success
So it is Important to have some idea of the flight path of the BM, ,
Do you know to what little extent (angle) interceptor can maneouver given the high speed of the missile, Interception angle is very narrow.
The interceptors will have a ring laser gyro-based inertial navigation sensor which will provide mid course corrections and trajectory shaping aided by terminal guidance sensors. The endo atmospheric interceptors will have a maneuverability of 2 G while the exo atmospheric interceptors will have a maneuverability of 30 G's.
Both prone to error incase of a real life scenario.
And as you may know there is little room for error
OK, let me give you a lesson on what is a BMD system - I'll keep it simple and brief.
A BMD is a system consisting of the following.
1. A early warning system - consists of AEW&C's, a satellite based missile monitoring system (MSS).
2. A layered air defence command, control and communications network. (e.g. IACCCS)
3. A host of LRTR's - long range tracking phased array radars of upto 1500 km's. (e.g. Greenpine, Swordfish)
4. A host of LRSR's - long range surveillance radars.
5. A host of multi-functional fire-control radars (MFCR).
6. The interceptor vehicles - Endo and Exo (several batteries).
7. A battle management, command, control, communications and intelligence center.
Once the hostile BM launch is detected through sats or aew&c's, the target vectors are coordinated by the SATCOM to the LRTR's to acquire the targets. The transporter - erector - launcher's of the interceptor missiles are activated on "hot stand mode", simultaneously the MFCR's take over and calculate the interception range, velocity, trajectory and distance. The interceptors are fired and the MFCR's along with inertial guidance systems on the interceptors guide the interceptors towards the targets.
so location is relevant also A ballistic missiles speed and altitude leave little room for error by the defender
Interception range will be from a few meters to 200 KM's high altitude, the speed of the interceptors range from mach 5 to mach 11.