CITAZIONE (bassano83 @ 13/5/2010, 16:33)
Il sistema di guida è radar semiattivo.
Ahem, non usa un sistema di guida semiattivo ma una diavoleria moderna chiamata
"inertial mid-course guidance" ...
"... The missile uses inertial mid-course guidance, with guidance correction update data being transmitted from the ground-based fire control centre via the Arabel multifunction radar's uplink data channel. The Sagem Agyle inertial guidance unit is fitted with a Sistemi Inersiali inertial guidance reference system and a Sagem miniature laser gyroscope.
The missile uses 'pilotage en force' (PIF) fine-controlled side thrust exhaust for manoeuvrability in the final phase of flight just before intercept, to ensure that the missile is within 2m of the target when the warhead is detonated. The missile's PIF system comprises a solid propellant gas generator which exhausts through four lateral nozzles in the long rectangular wings at a point close to the missile's centre of gravity.
The missile does not role in the final phase of flight. The guidance control system commands the PIF system to exhaust through one or two nozzles generating a controlled sideways thrust pulling up to 60g acceleration.
The missile and the target approach each other on a reciprocal flight path. As the missile approaches the target in the terminal phase, the missile uses an active pulse Doppler radar seeker, a derivative of the AN seeker design which incorporates a high-power travelling wave tube transmitter and wide antenna deflection, to home in on the target.
"Aster 30 SAMP/T has the capability to intercept targets at altitudes from 50m to 2Okm.'The seeker is laid on the target using data transmitted via the ground to missile uplink. Once seeker lock-on has been conformed the missile operates autonomously. The modifications to the seeker include higher closing velocity capability, an adjustment to the duty cycle to increase the transmitted power, an additional high resolution range function, and modified target lock-on and tracking algorithms. The seeker has ECCM including home on jam and clutter suppression. The programmable J-band pulse Doppler ANA radar seeker manufactured by Thales and Selex Sistemi Integrati, operates at 12GHz to 18GHz.,,"
