Abstract: A laser target detection and positioning method based on the wide-beam and high repetition frequency pulse laser rangefinding technology is presented for a large-range detection of impact point of air-to-ground attack training projectile launched from airborne gun. The proposed method provides a layout scheme of open laser vertical target in shooting range, which is composed of four laser detecting modules. A mathematic model of calculating the projectile terminal ballistic parameters in spatial coordinates is established, and the positioning error correction is made by averaging method and linear regression fitting method. The effectiveness of laser target detection and data processing method is verified through experiment. The present paper provides afeasibe way for establishing a target scoring system which can detect the high-speed projectiles in large range field, evaluate the training records objectively, and is installed and withdrawn conveniently.

Key words: ordnance science and technology, impact point detection, wide-beam laser target, air-to-ground attack training, high-speed projectile