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

Claim 14:
15. A system for determining a distance between a first radar system and a second radar system comprising:
the first radar system comprising a first transceiver, a first mixer, a first analog-to-digital converter (ADC), which is arranged downstream of the first mixer, and a first deskewing unit;
the second radar system comprises a second transceiver, a second mixer, a second analog-to-digital converter (ADC), which is arranged downstream of the second mixer, and a second deskewing unit; and,
a processing unit,
wherein the first transceiver is adapted to transmit a first Frequency Modulated Continuous Wave (FMCW) radar signal, which comprises a first sweep profile;
wherein the second transceiver is adapted to transmit a second FMCW radar signal, which comprises a second sweep profile, and wherein the first and second sweep profiles are different;
wherein the first transceiver is adapted to receive the second FMCW radar signal;
wherein the second transceiver is adapted to receive the first FMCW radar signal;
wherein the first mixer is adapted to generate a first beat signal based on the first FMCW radar signal and the second FMCW radar signal;
wherein the second mixer is adapted to generate a second beat signal by demodulating the first FMCW radar signal under use of the second FMCW radar signal;
wherein the first analog-to-digital converter (ADC) is adapted to digitize the first beat signal;
wherein the second analog-to-digital converter (ADC) is adapted to digitize the second beat signal
wherein the first deskewing unit is adapted to deskew 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;
wherein the second deskewing unit is adapted to deskew 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
wherein the processing unit is adapted to determine the distance between the first radar system and the second radar system by processing the deskewed beat signals.