Title:
TRAJECTORY ESTIMATION DEVICE, TRAJECTORY ESTIMATION SYSTEM, TRAJECTORY ESTIMATION METHOD, AND PROGRAM RECORDING MEDIUM
Document Type and Number:
WIPO Patent Application WO/2022/102133
Kind Code:
A1
Abstract:
To estimate the trajectory of a moving body having a wave source (sound source, vibration source), this trajectory estimation device (10) is made to comprise: a waveform generation unit (13) for using signals based on waves detected by at least three sensors (100-1, 100-2, 100-3) to generate peak waveforms consisting of time series data of the peak frequencies of the signals; a parameter estimation unit (14) for estimating, from the peak waveforms relating to the waves detected by the at least three sensors, a trajectory parameter relating to the trajectory (R) of a moving body (110) having the wave source of the waves; and a trajectory estimation unit (17) for using the trajectory parameter to estimate, for all of two peak waveform combinations selected from among at least three peak waveform combinations, a wave source direction candidate for each wave and estimating, as the trajectory (R) of the moving body, overlapping trajectory candidates from among trajectory candidates estimated on the basis of the wave source direction candidates.
Inventors:
ARAI YUMI (JP)
Application Number:
PCT/JP2020/042632
Publication Date:
May 19, 2022
Filing Date:
November 16, 2020
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
G01S5/22
Foreign References:
| JPH01136081A | 1989-05-29 | |||
| JP2000205794A | 2000-07-28 | |||
| JP2015118004A | 2015-06-25 | |||
| JP2007033445A | 2007-02-08 | |||
| US20110110195A1 | 2011-05-12 |
Attorney, Agent or Firm:
KITAJIMA Hiroshi et al. (JP)
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