Title:
AXIAL DISPLACEMENT ESTIMATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/030446
Kind Code:
A1
Abstract:
This axial displacement estimation device calculates a first assumed speed ratio, which is an assumed speed ratio that is calculated using an azimuth angle corrected on the basis of an axial displacement angle estimated in the preceding measurement cycles (S403). The axial displacement estimation device calculates at least one second assumed speed ratio, which is the first assumed speed ratio where it is assumed that there is aliasing at the azimuth angle (S405). The axial displacement estimation device determines, for each stationary reflection point, whether there is aliasing at the azimuth angle of the stationary reflection point, on the basis of the first assumed speed ratio and the at least one second assumed speed ratio (S406, S407). The axial displacement estimation device corrects the azimuth angle of the stationary reflection point for which it has been determined that there is aliasing (S408), and estimates the axial displacement angle on the basis of the corrected azimuth angle for the stationary reflection point whose azimuth angle has been corrected.
Inventors:
KONDO KATSUHIKO (JP)
TAKAYAMA TAKUYA (JP)
TAKAYAMA TAKUYA (JP)
Application Number:
PCT/JP2021/028613
Publication Date:
February 10, 2022
Filing Date:
August 02, 2021
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
G01S7/40; G01S13/931
Domestic Patent References:
| WO2016052744A1 | 2016-04-07 | |||
| WO2000075687A1 | 2000-12-14 |
Foreign References:
| JP2002228749A | 2002-08-14 | |||
| JP2011064624A | 2011-03-31 |
Attorney, Agent or Firm:
NAGOYA INTERNATIONAL PATENT FIRM (JP)
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