Track-via-Missile

Track -via- Missile ( TVM) is a method for directing anti-aircraft missiles. The process is a mixture of semi-active radar guidance ( SARH ) and radio control the rocket.

Explanation

Just as with the SARH process illuminates a ground-based radar target. Sensors in the rocket register the reflected radar energy from the target and thus to determine its own position relative to the target.

Unlike the SARH process the rocket calculated on the basis of this information does not own the intercept, but reports the information back to a ground-based system. There they will (if not already done by a processor in the rocket) prepared, updated with data from the ground-based detection systems and used for the preparation of tax data that are sent as the remote control, the rocket to steer it to the finish.

Benefits

  • Advantage over active radar guidance is that the rocket itself emits no radar energy and thus can not be detected by radar warning receivers of the destination. The goal, therefore, do not know if there is already a rocket in flight.
  • Advantage over SARH method is that the electronics calculates the intercept does not need to be built into the missile. This makes the rocket cheaper and allows, not to restrictions on space, power requirements, etc., which built- in the missile electronics is subject to having to take into consideration.
  • Advantageous with respect to the remote control is that the sensors which detect the position of the missile relative to the target, are installed in the missile, and therefore are much closer to the target than if it would remain on the ground. This improves inter alia, the resistance to interference.

Example systems

Many modern air defense missile systems use a TVM. Examples are:

  • USA: MIM -104 Patriot
  • Russia: S- 300PS / S- 300W / S -400
  • China: HQ -9
  • Missile weapon
MIM-104 Patriot SA-10 Grumble#Land-based S-300P .28SA-10.29 S-400 (SAM)
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