| 摘要 |
A drive assist system includes: first and second wireless communication devices on first and second vehicles. The first wireless communication device includes: a first distance calculation device for calculating a satellite positioning distance between the first and second vehicles; and a difference calculation device for calculating a distance difference between the satellite positioning distance and a distance to the second vehicle obtained by a ranging sensor in the first vehicle. The second wireless communication device includes: a second distance calculation device for calculating a satellite positioning distance between the second and another second vehicles; and an inter-vehicle distance determination device for estimating an inter-vehicle distance between the second and another second vehicles based on the distance difference and the satellite positioning distance calculated by the second distance calculation device, assuming the inter-vehicle distance is detected by a ranging sensor in the second vehicle. |
