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Developing LIDAR pulse code detection system using PRF

Light Detection And Ranging (LIDAR) is a technique to guide projectiles or other vehicles towards the target by illuminating it with a laser beam. The laser guided system uses laser designator to mark the target. The reflected laser from target is detected by seeker head, which sends signal to control system placed on weapon. Controls system then generate appropriate signals for fins to guide weapon towards the target. Weapon seeker heads and Laser designators have pulse coding system which enables seekers to avoid deception or jamming and also differentiate between individual laser designators. The pulse coding is usually based on Pulse Repetition Frequency (PRF). In the proposed model, two microcontroller units (MCU) are used. First MCU generates laser pulses with low PRFs. Second MCU detects the PRF and locks the system at particular PRF. It also produces gate signal and anticipation signal. Moreover it serially communicates with computer to change locked frequency, give current values of gimbal yaw and pitch angles and angular velocities and also plot them in real time. System is implemented in Proteus Software, tested on hardware and its LabView application is also developed.