Patent ID: 11899092
Assignee: LAMBDA:4 ENTWICKLUNGEN GMBH
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 9:
10. A method for signal round-trip time measurement or signal runtime measurement or for measuring a phase round-trip shift at least between a first object and a second object, including the steps of:
a. performing a reference sequence including, at least once, the following steps of:
i. sending a reference signal (RS) from the second object to the first object before, at or after a first reference time (t1′);
ii. receiving the reference signal (RS) at the first object;

wherein, at the second object, determining a first time difference (dt1) between a virtual frequency switching time (t1) and a reference time (t1′); and
wherein, at the first object, determining a second time difference (dt2) between a first switching time at which a phase relationship between a phase position of a first signal (S1) and the phase position of a first further signal (S1w.n) at the first object corresponds to a first phase relationship (phi1), and reception of the reference signal (RS) at the first object; and
calculating a signal round-trip time or signal runtime or phase round-trip shift between the first and second object from the first time difference (dt1) and second time difference (dt2).