Patent ID: 11906687
Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 13:
14. The underground investigation device according to claim 13, wherein
the transmission unit includes a transmission antenna array configured with a plurality of antenna elements and switches antenna elements to transmit a pulse wave while being synchronized with the repetition cycle,
the reception unit includes a reception antenna array configured with a plurality of antenna elements and switches antenna elements to receive a reflected signal while being synchronized with the repetition cycle,
the reception unit sets a length of the measurement span to a length in which all of the plurality of antenna elements of the reception antenna array receive reflected signals and samples the reflected signals through all of the plurality of antenna elements, and
the signal processing unit divides time waveform data sampled in the measurement span for each of the plurality of antenna elements and aligns the time waveform data resulting from division based on arrangement of the plurality of antenna elements.