Tracking with consideration of mobility

摘要

A level gauge carries out a tracking method with consideration of the mobility of the echoes. For this purpose, mobility values of echoes of an echo curve are determined and the expectancy function, by means of which it is determined whether a certain echo needs to be assigned to a certain track, is determined with consideration of at least one of the mobility values. In this way, the correct allocation of an echo to a certain track may be realized with high reliability.

主权项

1. A level gauge for determining mobility values of echoes of an echo curve and for carrying out a tracking method with consideration of at least one of the mobility values, comprising:
an calculation unit determining a first mobility value of a first echo of a first echo curve with consideration of a positional shift of the first echo and a positional shift of another echo of the first echo curve, wherein the calculation unit is furthermore designed for carrying out a tracking method in order to group echoes of successive echo curves that are caused by the same reflection point, wherein the calculation unit allocates a second echo of a second echo curve that is acquired after the first echo curve to a certain track with consideration of at least the first mobility value, and wherein the allocation of the second echo to the certain track is realized by utilizing an expectancy function, by means of which a probability for the correct allocation of the second echo to the certain track can be calculated; and wherein a width or a variance of the expectancy function is reduced if the positional shift of the first echo of the first echo curve is zero, but the positional shift of the other echo of the first echo curve is not equal to zero.