VEHICLE-PATH COMPUTATION METHOD

WIPO Patent Application WO/2014/125754

A1

A technique whereby paths in insufficient-GPS-signal segments are computed with high precision is provided. In one embodiment, a GPS receiver (2), a gyroscope (3), an acceleration sensor (4), and a vehicle-speed sensor (5) are used to obtain vehicle driving information at prescribed time intervals. A control device (1) computes a driving path from said vehicle driving information. Insufficient-GPS-signal segments are either set in advance or set on the basis of angular acceleration. Outside of the insufficient-GPS-signal segments, the control device (1) computes the driving path on the basis of stable GPS signals. In the insufficient-GPS-signal segments, i.e. segments in which GPS signals are erratic, the control device (1) performs interpolation using nth-order approximation. In said insufficient-GPS-signal segments, the control device (1) performs drift determinations and interpolates using dead reckoning when not in a drift state but using nth-order approximation when in said drift state.

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WATANABE YUUSUKE (JP)
HIGUCHI YUYA (JP)

PCT/JP2014/000031

August 21, 2014

January 08, 2014

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DENSO CORP (JP)

G01C21/28

WO2009157076A1

2009-12-30

JP2007155493A	2007-06-21
JP2012093319A	2012-05-17
JP2012133023A	2012-07-12
JP2006125906A	2006-05-18
JPH0755480A	1995-03-03
JP2010276527A	2010-12-09

KIN, Junhi (JP)
Gold Junki (JP)

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