Method for fill level measurement

A method for measuring a fill level of a fill substance in a container, the method comprising:

• transmitting a first signal in a direction of the fill substance;
• receiving a corresponding first received signal after reflection of the first signal in an interior of the container;
• transmitting a second signal in the direction of the fill substance, wherein the second signal has at least one defined property deviating from the first signal;
• receiving a corresponding second received signal after reflection of the second signal in the interior of the container;
• ascertaining a first fill level value based on the first received signal and ascertaining a second fill level value based on the second received signal;
• and
• determining the first fill level value or the second fill level value as the fill level when the first fill level value and the second fill level value agree.

A radar-based, fill level measuring device, comprising:

• a signal production unit designed to transmit a first signal and a second signal, in each case, as a radar signal in a direction of the fill substance;
• a receiving unit designed to receive after reflection of the first signal in an interior of a container, a corresponding first received signal and further designed to receive after reflection of the second signal in the interior of the container, a corresponding second received signal;
• and
• an evaluating unit, configured to:
• ascertain a first fill level value based on the first received signal;
• ascertain a second fill level value based on the second received signal;
• and
• output the first or second fill level value as the fill level when the first fill level value and the second fill level value agree.