1. A method of modeling a pulsed radar gauge (PRG) including a transceiver coupled by a process connection to a probe installed on a tank, comprising: providing a mathematical model that includes (i) dielectric properties and dimensions of materials used in said process connection, (ii) at least one dimension of said tank (tank dimension), (iii) dielectric characteristics of at least one product material in said tank, and (iv) a length of said probe (probe length); and using a processor implementing a stored echo prediction algorithm which utilizes said mathematical model, inputting pulse characteristics including a shape of an input radar pulse launched by a transmitter of said transceiver onto said probe into said mathematical model, and generating a predicted echo curve from said mathematical model.