A satellite defends itself by having a plurality of corner cube retroreflectors with shutters, each having a laser light sensor. It is assumed that the attacker first must obtain positional and range information with a pulsed laser. When one of the sensors detects these low power laser pulses, it causes...http://www.google.ca/patents/US4852452?utm_source=gb-gplus-sharePatent US4852452 - Defense to laser light irradiation
