Abstract: A radar level gauge system for determination of a filling level of a product contained in a tank including first pulse generating circuitry for generating a transmission signal in the form of a first pulse train having a first pulse repetition frequency and second pulse generating circuitry for generating a reference signal in the form of a second pulse train having a second pulse repetition frequency. The second pulse repetition frequency differs from the first pulse repetition frequency by a predetermined frequency difference. A propagation device propagates the transmission signal towards a surface of the product inside the tank. Measurement circuitry forms a measurement signal based on a reflected signal and the reference signal. Processing circuitry determines a value indicative of a filling level based on the measurement signal.

Abstract: A radar level gauge system, for determination of a filling level of a product contained in a tank, the radar level gauge system comprising: first pulse generating circuitry for generating a transmission signal in the form of a first pulse train having a first pulse repetition frequency; second pulse generating circuitry for generating a reference signal in the form of a second pulse train having a second pulse repetition frequency, the second pulse repetition frequency differing from the first pulse repetition frequency by a predetermined frequency difference; a propagation device connected to the first pulse generating circuitry and arranged to propagate the transmission signal towards a surface of the product inside the tank, and to return a reflected signal resulting from reflection of the transmission signal at the surface of the product contained in the tank; measurement circuitry connected to the propagation device and connectable to the second pulse generating circuitry, the measurement circuitry being