Patent ID: 11860264
Assignee: KABUSHIKI KAISHA TOSHIBA
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 4:
5. A ranging method adopting communication type ranging by a phase detection scheme, the ranging method comprising:
generating continuous 1s and continuous 0s as transmission data;
providing the continuous 1s and the continuous 0s to a transmitting circuit configured to FSK-modulate transmission data to transmit a transmission signal to cause a plurality of continuous waves each having a frequency that deviates from a center frequency of carriers used for data communication by a mutually different frequency deviation amount smaller than a carrier frequency spacing to be generated as transmission signals for ranging; and
generating the mutually different frequency deviations such that that frequency deviation corresponding to data representing at least one 1 of the continuous 1 s is a positive deviation, and frequency deviation corresponding to data representing at least one 0 of the continuous 0s is a negative deviation.