Optical Properties Analysis of Projectile Explosion Target and Ground Multi-bombing Point Positioning

To address the challenge of quickly locating multiple projectile explosion points on the ground during testing, this paper analyzes the optical characteristics of visible light, short-wave infrared, and medium to long-wave infrared target images of projectile explosions to select the most suitable optical shooting band. A test method is proposed based on the monocular camera of the space-based platform combined with ground control points to locate the coordinates of multiple explosion points. A complete set of automatic detection and location algorithms, such as image jitter correction, target image detection, and matching of the same named points, are provided. The feasibility and accuracy of the positioning method are verified by using the electronic detonation explosive experiment and the data acquisition method of the DJI UAV system. The experiment results show that the proposed method is not easy to be disturbed by fireworks, and the real-time processing error just is meter-level, and the post-processing test accuracy is in the decimeter level.