On-board Decoys could Defend Satellites from Attack
Decoys that credibly simulate the radar and optical signatures of the satellite are effective, potentially low-cost methods for diverting an ASAT attack from the actual satellite. The decoy would be located on or inside the host satellite and released at the precise moment for the most effective deployment. Decoys could also include lightweight optical or RF jamming systems to nullify or confuse an ASAT's homing system. Analysts estimate that employment of a decoy system would increase the total system cost by between one and ten percent of the total satellite cost.
Wilson, Tom. Threats to United States Space Capabilities. Washington, D.C.: U.S. Space Commission, 2001. [ 8 quotes ]