Patent ID: 11946999
Assignee: AIRBUS DEFENCE AND SPACE GMBH
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 15:
16. A method for determining a distance between a first radar system and a second radar system:
transmitting, by a first transceiver of the first radar system, a first Frequency Modulated Continuous Wave (FMCW) radar signal, which comprises a first sweep profile;
transmitting, by a second transceiver of the second radar system, a second FMCW radar signal, which comprises a second sweep profile, and wherein the first and second sweep profiles are different;
receiving, by the first transceiver of the first radar system, the second FMCW radar signal;
receiving, by the second transceiver of the second radar system, the first FMCW radar signal;
generating, by a first mixer of the first radar system, a first beat signal based on the first FMCW radar signal and the second FMCW radar signal;
generating, by a second mixer of the second radar system, a second beat signal by demodulating the first FMCW radar signal under use of the second FMCW radar signal;
digitizing, by a first analog-to-digital converter (ADC) that is arranged downstream of the first mixer, the first beat signal;
digitizing, by a second analog-to-digital converter (ADC) that is arranged downstream of the second mixer, the second beat signal;
deskewing, by a first deskewing unit of the first radar system, the first digitized beat signal by matching the sweep profile of the second FMCW radar signal with the sweep profile of the first FMCW radar signal;
deskewing, by a second deskewing unit of the second radar system, the second digitized beat signal by matching the sweep profile of the first FMCW radar signal with the sweep profile of the second FMCW radar signal; and
determining, by a processing unit, the distance between the first radar system and the second radar system by processing the deskewed beat signals.