Method and guidance system for guiding a missile
AssigneeSaab AB
InventorChrister Regebro
Life of this patent
Estimating the term…
Abstract
The present invention relates to a method and an arrangement for guiding a missile. In accordance with the prior art, the angle position of a target (9) when the missile (3) is expected to reach the target is predicted on the basis of the angular velocity determined in a preceding time period. In order to improve the strike accuracy, the operator, in a second subsequent time period, tracks the actual position of the missile in relation to the predicted angle position of the target. If a deviation is observed, a correction command is transmitted to the missile in order to correct the missile trajectory. For this purpose, a communications link is provided to transmit the correction command given by the operator.
Claims12
A method for guiding a missile fired at a target, the method comprising:
- tracking the target in a first time period to determine an angular velocity of the target, the tracking including recording at least a first angle position and a second angle position and a time interval between the first angle position and the second angle position;
- predicting an assumed angle position that the target is assumed to have when the missile reaches the target based on the determined angular velocity;
- continuously guiding the missile in a trajectory towards the assumed angle position as a function of time and missile speed;
- tracking an actual position of the missile in relation to a predicted angle position of the target in a second time period;
- and
- transmitting a correction command to the missile to correct the trajectory of the missile if a deviation is observed between actual position of the missile and the predicted angle position of the target.
A missile guidance system, comprising:
- means for recording a first angle position and a second angle position of a target and a time interval between the recording the first angle position and the second angle position and for determining an angular velocity of a target in the first time interval;
- means for predicting a position of the target when the missile is expected to reach the target based on the angular velocity;
- means for predicting a desired trajectory of the missile;
- and
- a communications link operative to transmit correction commands to the missile in a second time period for correction of the desired trajectory of the missile.
Dependencies are inferred from the claim text.