11. Terminal guidance  would be provided by a tracking beacon, operated by the troops in the battle area.12. For terminal guidance , it uses infrared homing ( Imaging infrared ) with an autonomous digital target recognition system. 13. Many experiments with radio and wire-guided missiles had demonstrated real problems with last-minute " terminal guidance  " corrections. 14. Advances in terminal guidance  systems for small munitions has allowed large-caliber guided projectiles to be developed, blurring this distinction. 15. In practice, terminal guidance  systems are often optical or active radar systems, in an effort to greatly increase accuracy. 16. A TV digital scene matching terminal guidance  system has also been proposed, providing a CEP down to less than 5m. 17. When entering the terminal phase of flight, the missile switches on its terminal guidance  radar to search for the target. 18. As well as its terminal guidance  radar, the midcourse guidance is radio altimeter for use with its autopilot during cruise. 19. The development of Marine Corps atomic or other fire support, and methods for last-minute emplacement of visual and electronic terminal guidance  aids. 20. It has a terminal guidance  system based on an infrared homing seeker, which identifies the target during the final stage of flight.