The report outlined the defensive options available to the Soviets:
Most of the Soviet satellites that were targets for the ASM-135 were capable of maneuvering. Only one type of target, designated the ELINT-3 (for “electronic intelligence”), was not. But as the report noted, the satellites were designed for limited maneuvering only for operational purposes and maneuvering to defend themselves would quickly use up propellant.
The report noted that the Soviets might also increase their number of satellites before and during a conflict. This would be expensive for them. Some satellites could also be stored in high orbits.
Decoys that radiate in the infrared were a possible way to defend against the American ASAT (flares are a common defense used by aircraft against heat-seeking missiles).
The final defensive option identified by the report was an escort satellite that could defend a high-value satellite with lasers or nuclear or nonnuclear missiles. Defending low-altitude satellites would be difficult because there would be little time for warning, acquisition tracking, and engagement of the ASAT coming up to kill the target.
The only fighter pilot in history to shoot down a satellite:
I’d point out that John Brunner mentions pirate satellites sanded (from "S and D", Search and Destroy) out of orbit in The Shockwave Rider (1975).
Another possible technology that could be used for ASAT purposes is the DARPA effort MAYHEM (MAgneto Hydrodynamic Explosive Munition) program, which uses self-forging penetrators (SFP) that could conceivably be used against satellites.
MAYHEM is essentially an Arthur C. Clarke idea: the stiletto Beam from his 1955 novel Earthlight.
Can A Human Land A SpaceX Rocket On Its Tail?
'If she starts to roll sideways — blooey! The underjets only hold you up when they’re pointing down, you know.' - Stanley G. Weinbaum, 1936.
Technovelgy (that's tech-novel-gee!)
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Illustrating Classic Heinlein With AI
'Stasis, cold sleep, hibernation, hypothermia, reduced metabolism, call it what you will - the logistics-medicine research teams had found a way to stack people like cordwood and use them when needed.'
Deflector Plasma Screen For Drones ala Star Wars
'If the enemy persists in attacking or even intensifies their power, the density of the plasma in space will suddenly increase, causing it to reflect most of the incoming energy like a mirror.'