Models of laser detector and target azimuth for terminal correction mortar projectile

The operational principle of laser detector of terminal correction mortar projectiles (TCMP) was studied, the correction zone of laser detector was analyzed, the coordinate transformation formula between ground coordinate system and laser detector coordinate system was deduced, the target azimuth model of laser detector was established, and the method of solving target azimuth angle and track error angle was researched by means of target facula. The simulation computation results show that lower body rotation speed may cause the missing of target in the detecting process, hit precision can be greatly improved by using low cost course correction technology. The established laser detector model and target azimuth model lay the foundation for trajectory model and exterior ballistics simulation of TCMP.