Rumble measurement strategy
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This note is one of the deliverables of the RUMBLE program, which aims at developing methods for using operational sonars for measuring and estimating bottom parameters. These parameters are necessary for predicting sonar performance, but rarely available. This note investigates the differences in some relevant backscattering models in order to define measurement strategies that can best parameterise the backscattering. The measurements will also be inputs to inversion methods being developed in RUMBLE that will be used to estimate the parameters needed as inputs to the chosen backscatter models. Several different measurements are proposed, and the observability of the parameters that can be extracted from the different measurements is commented upon. Finally a set of measurements is proposed including recommended signals that the sonar should transmit.