An information transmission system is provided for a guided missile 1 in which guidance information is transmitted from the missile launch point to the missile along a beam 8 of 10 .mu.m wavelength radiation. The missile has a rearwards facing optical system 9 to collect and focus the radiation onto...http://www.google.com/patents/US4768736?utm_source=gb-gplus-sharePatent US4768736 - Information transmission system
