Model Optimization and Calculation Method of Multi-Target Curved Motion Parameters Measurement Using Multi-Screen Intersection Test Mechanism

The parameters calculation model of a six-screen intersection with linear motion is used to test the projectile explosion location parameter under the condition of long-range artillery firing, which brings a significant test error, the main reason for the error is that the projectile has its own gravity during the flight, it makes the flight path of the projectile is a curved trajectory. To improve the test accuracy, this paper uses the projectile particle motion equation and six-screen intersection geometry relationship and considers the impact of the projectile's gravity acceleration and air resistance; it studies a calculation model and method of relative location for projectile proximity explosion under the spatial projectile curved motion. Then, it analyzes the error reason for calculating relative coordinate of projectile passing through the detection screen interval by using six-screen intersection test method based on linear motion. By introducing the gravitational acceleration and air resistance during the projectile flight process, establishes the variable trajectory parameters calculation model for a projectile with the curved motion passing through a six-screen intersection test system. Through the high-altitude projectile proximity explosion location test, this paper uses the method of the ballistic lateral camera to obtain the experimental data of projectile explosion location parameter. It compares the experimental data by using the six-screen intersection test method with linear motion and curved motion. The results show that the calculation model based on the curved motion model is closer to actual coordinate data of the projectile proximity explosion location.