Guidance system and guidance signal generation method of portable infrared homing air defense missile

Abstract

The present invention proposes a guidance system of a portable infrared homing anti-aircraft missile with a higher anti-jamming success rate. The system adopts an embedded processor to realize the following functions: process 4V information and generate the first available when it does not exist. The pilot signal is cached before the interference occurs, and the cached signal is updated in real time; the original information is processed by pulse width detection in a specific way, and the first pilot signal is corrected for the target and interference respectively. Two-way signals; detect the frequency of the φ angle signal, read the buffered first pilot signal according to the frequency, and superimpose it with the output signal of pulse width detection to generate a second pilot signal available when there is interference; Whether there is currently interference is detected; when there is no interference, an unbuffered first pilot signal is output, and when there is interference, a second pilot signal is output. The product of the invention has good consistency and high efficiency in the process of production and debugging.

Description

Guidance system and guidance signal generation method of portable infrared homing air defense missile technical field The invention belongs to the technical field of portable infrared homing air defense missiles, in particular to a guidance system for portable infrared homing air defense missiles and a method for generating guidance signals for portable infrared homing air defense missiles. Background technique Portable anti-aircraft missiles are anti-aircraft weapons that target aircraft, helicopters, and cruise missiles invading at low and ultra-low altitudes, and portable infrared-homing anti-aircraft missiles that use passive infrared homing seekers and single-channel control guidance systems are also portable air defense missiles It is a distinctive type of missile. Its excellent performance and achievements in actual combat have won it a wide market and reputation. However, the battlefield environment of modern warfare is becoming more and more complex. In addition to...

AI Technical Summary

Problems solved by technology

1) The relative speed of the target and the interference is required to be large enough. If the relative speed of the target and the interference is small, the separation time between the two will be too long due to the relatively large field of view of the infrared detector. Increase the anti-jamming time, thereby reducing the success rate of anti-jamming;

2) Since the guidance signal generation system is designed with an analog circuit, the spatial position of the target cannot be accurately judged, and the direction in which the interference is pushed out of the field of view of the infrared detector cannot be accurately judged, which will further Reduce the success rate of anti-jamming;

Images