POSITION MEASUREMENT DEVICE AND POSITION MEASUREMENT METHOD

WIPO Patent Application WO/2015/159563

A1

A radio wave reception unit (20) receives radio waves transmitted by a positioning satellite, by using an antenna (10), and receives positioning satellite signals. A speed measurement unit (50) measures the travel speed of the antenna (10) and the travel distance of the antenna (10) along an orbit from a reference position. A position and time calculation unit (80) calculates the position of the positioning satellite, the reception position of the antenna (10), and the time, on the basis of the positioning satellite signals. A time measurement unit (30) measures time within a set error range. An error upper limit determination unit (60) evaluates a positioning error upper limit for the antenna (10) reception position on the basis of: a value obtained as a result of the difference between the time calculated from the positioning satellite signals and the time measured by the time measurement unit (30) being multiplied by a coefficient determined from position of the positioning satellite; and orbit position information in a storage unit (40). A position determination unit (70) corrects the travel distance measured by the speed measurement unit (50) and determines the antenna (10) position, on the basis of the positioning error upper limit evaluation.

IWAMOTO TAKASHI (JP)

PCT/JP2015/051208

October 22, 2015

January 19, 2015

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MITSUBISHI ELECTRIC CORP (JP)

G01S19/45; B61L25/02; G01C21/28; G01S19/50

WO2012077184A1

2012-06-14

JP2011225188A	2011-11-10
JP2011137708A	2011-07-14
JP2009042179A	2009-02-26
JP2003294825A	2003-10-15
JP2013244758A	2013-12-09

KIMURA MITSURU (JP)
Mitsuru Kimura (JP)

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