POSITIONING DEVICE

摘要

An object of the present invention is to provide a positioning device which can more reliably and frequently correct a own vehicle position earlier, reliably detect an error matching state or a straying state earlier and correct the position to a correct position. The positioning device according to the present invention includes a GPS receiver, a GPS position calculating unit which calculates pseudo distances to the GPS satellites based on the transmission signals, and calculates a re-calculated GPS position which is the own vehicle position based on the pseudo distances, and a multipath influence evaluating unit which evaluates a multipath influence on the GPS position based on a difference between the GPS position calculated by the GPS receiver and the re-calculated GPS position calculated by the GPS position calculating unit.

主权项

1. A positioning device comprising:
a first moving body position calculating unit that receives transmission signals transmitted from a plurality of GPS satellites, obtains pseudo distances to said GPS satellites and a Doppler shift based on the transmission signals, and calculates a first moving body position that is a position of a moving body, based on said obtained pseudo distances and said obtained Doppler shift; a second moving body position calculating unit that calculates a second moving body position that is the position of said moving body, based on said pseudo distances; and a multipath influence evaluating unit that evaluates an influence of a multipath on said first moving body position based on a difference between said first moving body position calculated by said first moving body position calculating unit and said second moving body position calculated by said second moving body position calculating unit.