Navigation equipment

Data processing: vehicles – navigation – and relative location – Navigation

Reexamination Certificate

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Details

C701S208000, C701S213000, C701S214000, C701S216000

Reexamination Certificate

active

07987047

ABSTRACT:
A navigation equipment includes a user position observing unit15for calculating the position of the navigation equipment by using the pseudo range and position of each GPS satellite, and a pseudo range error, a user velocity and heading observing unit16for calculating the velocity of the navigation equipment from a measured range rate, the position of each GPS satellite, and the position of the navigation equipment, and a user heading searching unit17for, when a multipath error is smaller than a specified value, searching for, as the heading of the navigation equipment, a heading whose range rate, which is calculated from a relative movement between the navigation equipment when the navigation equipment changes its heading within a predetermined angle range and a GPS satellite, matches the measured range rate.

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patent: 2007-10550 (2007-01-01), None
patent: WO-2005/017552 (2005-02-01), None

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