Projectile Based On Shock Wave And Light Measurement Research On Compound Detection Of Flight Parameters

Projectile flight parameters are important indicators to measure the damage performance of ballistic weapons,important basis for weapon research,range test,battlefield use and fault diagnosis,and important parameters for designing new weapon system,finalizing development,achievement acceptance and fault maintenance.The mainstream multilight screen sky screen target has good measurement accuracy,but its structure is heavy and the target placement is difficult,and it is not suitable for the field shooting range with difficult conditions.Although the acoustic accuracy target has a simple structure and flexible target placement,the overall accuracy is low.The research in this subject is a composite detection system for projectile flight parameters based on shock wave and optical measurement,which uses the time value of the flying projectile passing through each detection unit of the detection system.the signal characteristics and spectrum characteristics of the flying projectile are first studied,which provided a theoretical basis for optimizing the selection of detectors and proposing the overall scheme of the system.A shock wave cone surface model of the projectile is constructed,and a five-element array mathematical model based on shock wave and optical measurement is derived,and the model is simulated and verified in MATLAB simulation software to prove the feasibility of the model.Based on the simulation results,the relevant factors that affect the detection accuracy of the model are determined,and the theoretical basis is provided for the design of the hardware test platform and the actual measurement of the shooting range.According to the requirements of the detection system based on shock wave and light measurement,a detection system test platform based on shock wave and light measurement was built,including shock wave signal acquisition and processing module,visible light signal acquisition and signal processing module,time acquisition and control module,The design and construction of the upper computer solution and display modules.Many experiments have been completed using this test platform to verify the feasibility and reliability of the test platform for the detection system based on shock waves and light measurement;According to the simulation results,the acoustic calibration technology is studied.According to this technology,a series of experiments such as sound velocity calibration and projectile muzzle velocity calibration are carried out for each detection unit to ensure the detection accuracy of the system..The effective target surface of 10 m × 10 m is arranged in the range experiment.Through the comparative experiment with the six light screen sky screen target,the flight parameters calculated by the system are basically consistent with those measured by the six light screen sky screen target.It is verified that the five-element array model based on shock wave and light measurement can well calculate the projectile’s impact point coordinates and flight velocity vector for the flight parameters of the projectile.Therefore,under the condition of accurate location calibration of each detection unit,the composite detection system based on shock wave and light measurement can meet the requirements of the target field for the detection of projectile flight parameters.