| 摘要 |
PROBLEM TO BE SOLVED: To provide an electric-wave emission source visualization device for individually visualizing the directions of arrival of electric waves from a plurality of vehicles. SOLUTION: When a roadside device and in-vehicle devices perform roadside-to-vehicle communications by DSRC, electric-wave emission positions corresponding to the electric waves from the plurality of vehicles are pinpointed, by performing visualization processing while discriminating time slots of the DSRC. Namely, the directions of arrival of electric waves estimated for each slot are made to correspond to a plurality of vehicles, by making uplink slots correspond to in-vehicle devices at the roadside device. COPYRIGHT: (C)2010,JPO&INPIT
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