A Method of Resisting Active Interference of High Repetition Frequency Laser

Abstract

The invention relates to a method for resisting high repetition frequency laser active interference, which comprises opening a sampling gate before the gating gate; judging whether it is interfered by high repetition frequency according to the number of signals in the sampling gate, and recording the last The characteristic of a signal is defined as a reference signal; if there is no high repetition frequency interference, the guidance signal in the gate is directly processed; if it is interfered with by high repetition frequency, the pulse width of the signal in the current gate is calculated one by one and compared with the previous The set guidance signal is compared until a signal with the same pulse width is found and the current signal is judged as a suspicious signal; the current suspicious signal is compared with the characteristics of the reference signal, and if they are the same, it is judged that the current suspicious signal is a high repetition frequency signal, otherwise it is judged as The guidance signal to be extracted. The invention selects and opens the gating wave gate according to the frequency of the guidance signal, preferentially excludes a large number of high-repetition frequency interference signals, uses the pulse width as the feature of the guidance signal to select the guidance signal for the first time, and verifies it twice to improve the accuracy.

Description

technical field [0001] The invention mainly aims at the problem of high repetition frequency signal interference in the use of laser guided weapons, and proposes a method for resisting high repetition frequency laser active interference, which can improve guidance accuracy and is mainly used in the field of laser countermeasures. Background technique [0002] Laser-guided weapons have been widely used in modern warfare due to their low cost, high guidance precision, and simple methods. The main working part of the laser guidance system is the laser seeker. The detector of the seeker converts the weak echo signal reflected by the target into an electrical signal, which is processed by calculation to form a control command to control the missile to fly to the target. [0003] With the development of laser technology, jamming measures against laser-guided weapons are gradually enriched, among which active laser jamming is a very important and effective jamming method. It emit...

AI Technical Summary

Problems solved by technology

High repetition frequency interference can cause the laser seeker to lose its accuracy, and in severe cases, the target will be lost, resulting in strike failure

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