Method for measuring motion parameters of projectile in shooting range based on digital slit shooting technology

Abstract

The invention provides a method for measuring motion parameters of projectile in a shooting range based on a digital slit shooting technology. The technical scheme comprises the following three steps of: first, arranging a stereo digital slit measuring system; second, determining a stereo linear array camera imaging model; and finally, measuring motion parameters of projectile. The second step comprises: 1, respectively determining inner orientation elements and exterior orientation elements of a front camera and a bottom camera; and 2, respectively determining imaging model expressions of the front camera and the bottom camera. The third step comprises: 1, selecting feature points and calculating initial estimated value of the motion parameters of projectile; and 2, constructing a motion parameter optimization solving model based on a projectile three-dimensional digital model and calculating the optimization estimated value of the projectile motion parameters. By the adoption of the measuring method provided by the invention, high-precision measuring of motion parameters of projectile in a shooting range such as target speed, attitude, angle of attack and the like is solved, and digitization and automation of the shooting range slit technology are realized.

Description

technical field [0001] The invention relates to the fields of photogrammetry and image processing, in particular to a method for measuring motion parameters of shooting range projectiles based on digital slit camera technology. Background technique [0002] Range testing of gun-launched weapons (projectiles, missiles, etc.) provides an important basis for the identification and improvement of weapon performance. The attitude, speed, angle of attack and other parameters of the projectile after it is released from the chamber are the main factors affecting its range and shooting accuracy, so the accurate measurement of these parameters is the main task of the shooting range test. [0003] Compared with other methods, the optical measurement method has the advantages of high measurement accuracy, good data visualization effect, and anti-interference, so it has an irreplaceable position in the measurement and testing of high-speed targets such as shooting range projectiles. At ...

AI Technical Summary

Problems solved by technology

In addition to the inherent difficulties in the traditional slit technology, the current research on this technology also has the problem that the ballistic synchronization condition is far from being achieved due to the limitation of the scanning frequency of the line array camera.

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