Systems and methods for automomous protection of satellites from hostile orbital attackers

1. A system carried on a satellite in orbit around the earth comprising a first subsystem for detecting and tracking a satellite attacker, a second subsystem for determining whether said attacker is hostile, and a third subsystem for passively defeating or deflecting said attacker, or for actively destroying said attacker autonomously.

2. The system of claim 1 further comprising, in said second subsystem, a computer processor with artificial intelligence which autonomously determines said attacker's hostility using, on board said satellite, one or more of tracking data, measured attacker characteristics, information from a library of attacker characteristics, and reception of attacker's microwave and optical transmission frequencies.

3. The system of claim 2 wherein said computer is configured to determine when likely collision or near collision between said satellite and said attacker will occur, and the time within which to defeat, deflect or destroy said attacker.

4. A method for defeating an attacker moving toward collision with a satellite, while said satellite is in orbit around the earth, that includes a system on board said satellite for defeating or deflecting said attacker without altering/modifying/changing said satellite's orbital path or speed comprising: detecting said attacker, determining whether said attacker is hostile, and activating one or more countermeasure devices on said satellite to defeat, deflect or destroy said attacker.

5. A system carried on a satellite in orbit around the earth comprising a subsystem for determining whether an object approaching said satellite is hostile, for selecting an on-board countermeasure or countermeasures for defeating, deflecting or destroying any such hostile object, for calculating when to deploy and activate said countermeasure or countermeasures, and for activating said countermeasure or countermeasures at the calculated time.

6. The system of claim 5 wherein said countermeasure is selected from the group consisting of chaff deployers, decoy deployers using kinetic, heat source, light source and microwave/optical transponders, microwave/optical frequency jamming transmitters, a decoy using mechanical structures, heat/optical/radar seeking missiles with explosive warheads, anti-satellite missiles for explosive or kinetic collision with an attacker, and microwave or laser radiation.