An assessment method and system for characterizing the operation of an imaging system are disclosed. The assessment system can comprise a light source configured to illuminate the imaging system, a modulator configured to modulate light from the light source, a receiver configured to intercept communications from the imaging system, and an analyzer configured to analyze the intercepted communications. The assessment system can be used to determine the effectiveness of an image denial system that is used to prevent a surveillance satellite from providing imagery and can thereby provide an advantage on the battlefield.
