The Research Of High Precision Measurement Technology Of High Speed Target

The simple trajectory correction projectiles will be launched to intercept the enemy target after the motion and position parameters measured by the ground air defense missile system based on simple ballistic correction. The shells change the course of the projectile flying by the multiple rocket ejector installed on the projectile in order to improve the success rate of the real-time intercepting. In order to open the corresponding rocket ejector real-time and correctly, we need to identify the current posture of the projectile, and access to its profile information such as the roll Angle to form a correct guidance commands.This paper presents a microwave beam guidance demonstration system to measure the high speed target. The system measure the high-speed target rotation parameter of distance within 50 m to 300 m, speed between the 700m/s to 1500m/s and the rotating speed at 300r/min to 900r/min. The accuracy of the Angle measurement is better than 5degrees, the reaction time less than 1ms. In order to achieve the high precision measurement system of high speed target, this paper has carried on the detailed analysis and discussion for the indicators of the front-end hardware circuit, the back-end signal processing methods and system alignment form according to the functional requirements of the system, emphatically discusses the back-end of the system signal processing algorithms, MCU program flow chart and the software and hardware indicators to implement the specific function of the system. First, analysis the indicators of the front-end hardware circuit module combined with the system main function requirements, and design the signal processing module with the comprehensive consideration of various factors such as cost, power consumption and performance, write the back-end signal processing program to implement guidance instruction which generated by the computer control interface through the serial port to the FPGA and the guidance instruction modulation to the microwave carrier signal, in the end, analysis the corresponding theory on the problems existing and put forward the improvement measures through the system alignment to meet the system requirements.This article proposed a high-speed target microwave beam guidance demonstration system satisfies the requirement of low cost, miniaturization, high stability, has a certain reference value in the study of ground air defense missile system.