抄録
Offer Organization: Japan Society for the Promotion of Science, System Name: Grants-in-Aid for Scientific Research, Category: Grant-in-Aid for Scientific Research (C), Fund Type: -, Overall Grant Amount: - (direct: 3400000, indirect: 1020000)
In urban canyons, pedestrian positioning precision may be significantly degraded by the obstruction and reflection of roadside buildings. In our work, this problem is solved from two aspects. (i) When the line-of-sight (LoS) wave from a satellite is not received, but a reflected wave is used instead for positioning, the multipath error occurs. By exploiting the temporal/spatial correlation of multipath errors, the multipath error at a pedestrian is estimated and corrected. (ii) When the number of satellites is insufficient for positioning, vehicles near a pedestrian are used as anchors, and the spatial and temporal variation of channel state information is used to construct a virtual 2D antenna array and used to accurately measure the pedestrian-vehicle angle, which helps to greatly improve the pedestrian positioning precision.