Patent ID: 11953610
Assignee: FURUNO ELECTRIC COMPANY LIMITED
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 3:
4. A method of calculating movement information, comprising the steps of:
receiving GNSS signals via a plurality of antennas;
generating a clock signal common to a plurality of GNSS receivers;
calculating GNSS observed values in the plurality of GNSS receivers by using the GNSS signals received by the plurality of antennas and the common clock signal, respectively;
calculating the movement information including a speed of a movable body based on the GNSS observed values from the plurality of GNSS receivers;
estimating an error including a clock drift of the clock signal; and
calculating the speed of the movable body based on the estimated error, wherein
when the combination of the plurality of GNSS signals received by each of the plurality of antennas is different, the speed of the movable body is configured to be calculated by using all of the GNSS signals transmitted from positioning satellites and received by the plurality of GNSS receivers.