Patent ID: 6759977
Filing Date: 2004-07-06
Classification: G01F,G01S,H01Q

Abstract:
A method for radar-based gauging of the level of a substance in a tank having at least one interfering structure, comprising the steps of:transmitting a microwave signal in a plurality of differently directed radiation lobes, each of which being directed towards a surface of said substance and at least one of which being directed towards said at least one interfering structure; detecting temporally resolved, for each of said plurality of differently directed radiation lobes, the microwave signal as reflected against the surface of said substance, and, for at least one of said plurality of differently directed radiation lobes, the microwave signal as reflected against said at least one interfering structure; distinguishing based on signal strengths of said detected microwave signals, the detected microwave signals, which have been reflected against the surface of said substance; and calculating based on a propagation time of at least one of the microwave signals distinguished as those, which have been reflected against the surface of said substance, the level of said substance in said tank.