A method of simulating a pulsed radar gauge (PRG) on a tank. Provided are (i) a parametrized model of an echo reflection responsive to a transmitted radar pulse defined by an initial spatial model function, a first signal model modeling the pulse traveling through the media, and a second signal model modeling reflection and transmission of the pulse striking boundaries involving the media, and an (ii) echo curve calculation (ECC) program. The ECC program divides the signal path into path components for the pulse using the first and second signal model together as a recursive program with stop conditions to indicate an end result for the path components when taken together for reflected signals reaching the transceiver include locations of reflections and respective amplitudes. A shape of the initial model is placed at reflection locations using their respective amplitudes applied to size their amplitude to generate a simulated echo curve.
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