Trend analysis of insertion loss data associated with large, significantly loaded compartments

Due to their metallic structure, it is not unreasonable to presume that the compartments of a naval vessel are appreciably reverberant when injected with an electromagnetic signal of reasonable wavelength. This assumption was put to the test when a series of measurements of the insertion loss were made in twelve ship compartments onboard a United States Naval vessel. The measurement technique assumes a reverberant environment and the test frequency range spans 200 MHz through 10 GHz. In references [2] and [7] the data is analyzed in order to assess the validity of the reverberant assumption and a summary of these finding is reported herein. Historically, for a reverberant environment the insertion loss is expected to behave linearly with the logarithm of the frequency