Confrontation method for laser active jamming

Abstract

The invention discloses a confrontation method for laser active jamming. A laser locating and tracking system comprises an emitter and a receiver; the method comprises the following steps: the emitter encodes laser detecting signals according to the finite random cycle encoding mode, so that intervals of all laser detecting pulses in one encoding cycle are changed randomly; the emitter introduces the random phase shift Delta i on the all laser detecting pulses, so that the laser detecting pulses have variable phase differences, wherein one random phase shift value is distributed to each laser detecting pulse from the random phase shift sequence; any random phase shift value in the random phase shift sequence is greater than or equal to the time resolution of the receiver, and is smaller than the predetermined minimum period t0 of interference pulses. The confrontation method and system for the laser active jamming of the laser locating and tracking system, disclosed by the embodiment of the invention, both have excellent confrontation effect on the present common three laser active jamming modes and complex jamming modes thereof.

Description

technical field [0001] The present application relates to a system and method for combating laser interference in laser positioning, in particular to a system and method for combating active laser interference in laser positioning. Background technique [0002] In the laser positioning and tracking system, the transmitter (target indicator) emits laser light to the target, and the receiver receives the laser light reflected from the target. At this time, it may encounter malicious human interference or interference from harsh natural environments, resulting in Communication cannot be carried out normally, so that normal positioning cannot be performed. For example, when lasers are used to locate ships to be rescued at sea or objects in high-risk situations, if interference occurs, the objects to be rescued may not be able to be located, resulting in huge loss of personnel and property. [0003] In addition, when laser-guided weapons use lasers for positioning and tracking, ...

AI Technical Summary

Problems solved by technology

There are major technical difficulties in the implementation of this method, especially when the interference laser adopts high-frequency random coding, this method cannot work at all, and it is difficult to apply in general laser positioning and tracking systems

[0010] At present, there are no measures in the existing technology that can effectively counteract synchronous forwarding interference, answering spoofing interference, and laser high-repetition frequency interference, especially there is no solution that can resist the three types of interference.

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