Title:
SPEED ESTIMATION SYSTEM, ROAD SURFACE EVALUATION SYSTEM, COMPUTER PROGRAM, SPEED ESTIMATION METHOD, AND ROAD SURFACE EVALUATION METHOD
Document Type and Number:
Japanese Patent JP2023024080
Kind Code:
A
Abstract:
To provide technology enabling calculation of highly accurate speed.SOLUTION: According to one aspect of the disclosure, difference (V2-V1) between a first speed V1 which is a speed of a mobile object calculated based on a position of the mobile object 1 measured by the global positioning system (GPS) and a second speed V2 which is the speed of the mobile object calculated based on the acceleration of the mobile object measured by an acceleration sensor 23, is input to a low-pass filter 38. As a result, the output of the low-pass filter is obtained as an estimated value of an error component included in the second speed V2. An estimated value of a true speed of the mobile object is calculated by subtracting the estimated value of the error component from the second speed V2.SELECTED DRAWING: Figure 3
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Inventors:
FUKAI HIDEKAZU
KOJIMA KAKUTO
KOJIMA KAKUTO
Application Number:
JP2021130146A
Publication Date:
February 16, 2023
Filing Date:
August 06, 2021
Export Citation:
Assignee:
TOKAI NATIONAL HIGHER EDUCATION & RES SYSTEM
International Classes:
G01P21/02; G01P7/00
Attorney, Agent or Firm:
Nagoya International Patent Attorney Corporation