Fig. 8
From: On the use of watermark-based schemes to detect cyber-physical attacks
Numeric simulation results using the single- and multi-watermark detection schemes with the same performance loss. a Detection ratio for a system of order four, using single- and multi-watermarks. b Detection ratio for a system of order 25, using single- and multi-watermarks. a Detection ratio function with respect to the single- and multi-watermarks with different switching frequencies for fourth order systems. b Detection ratio function with respect to the single- and multi-watermarks with different switching frequencies for systems of order 25