Method and system for defence against surface-to-air missiles

Abstract

A method and a system for defense against surface-to-air missiles (Manpads), which represent a threat to military and civil aircraft during takeoff and landing. For missile defense, the missile is jammed by irradiating it with electromagnetic jamming radiation. This jamming radiation may be constituted of continuous-wave irradiation or frequency packets with a defined pulse repetition rate.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a method and also to a system, which provide for a defense against surface-to-air missiles which represent a threat to military and civil aircraft during takeoff and landing.[0003]2. Discussion of the Prior Art[0004]Military and civil aircraft can be attacked by surface-to-air missiles (Manpads=Man Portable Air Defense Systems) during takeoff and landing. Manpads such as these are available even to terrorist groups throughout the world and in consequence represent an increasingly serious threat. These surface-to-air missiles are generally of a relatively old type and at the moment are generally still equipped with analogue electronics.SUMMARY OF THE INVENTION[0005]The invention is based on the object of providing a method and a system of the type mentioned initially which, using simple means, is suitable for defense against surface-to-air missiles (=Manpads), which represent a threat to ...

AI Technical Summary

Benefits of technology

[0010]The behaviour of the homing head and thus the trajectory of the missile to be defended against can be simulated. Appropriate simulation tools have been developed for various Manpads by the applicants. This makes it possible to verify the effectiveness of electromagnetic jamming irradiation with optimized parameters.

[0028]Connecting the individual modules in parallel allows more power to be emitted and a higher gain. The necessary phase synchronicity is achieved by a multi-frequency phase adaptation in completely digital form, controlling the phase between the antenna output signal and the internal AWG frequency to be the same for all of the frequencies which are emitted at the same time. In this case, all of the AWGs are synchronized via a master clock. Frequency bursts at different frequencies are added in the AWG, and are emitted in time with the critical pulse repetition rate. This allows adaptation of the direction-dependent frequency selectivity of the target, while allowing different targets to be attacked at the same time. The only limit to the number of different frequencies is the maximum amplifier output power.

Problems solved by technology

If the jamming radiation that is suitable for ideal injection is additionally modulated or clocked with a frequency which corresponds to the appropriate operating frequency, then it is probable that the homing head of the missile to be defended against will lose the target.

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