Vehicle position detecting apparatus

1. A vehicle position detecting apparatus, comprising:

a position measurement unit that measures a position of a first vehicle as an own vehicle to obtain first position information as position information of the first vehicle;

an autonomous sensor that detects a relative position, relative to the first vehicle, of a second vehicle to obtain relative position information of the second vehicle, the second vehicle being a vehicle different from the first vehicle;

a receiver that receives communication data obtained by the second vehicle and sent from the second vehicle, the communication data containing a second position information, as a position information of the second vehicle; and

a processor, configured to:

identify the second vehicle specified based on the relative position information and the second vehicle from which the communication data is sent, based on the first position information, the relative position information, and the second position information,

determine, for the second vehicle, a difference, as a position error, between a position of the second vehicle specified based on the relative position information and a position of the second vehicle specified based on the second position information,

correct, based on the position error, the position of the second vehicle specified based on the second position information, on a condition that the second vehicle is no longer detected by the autonomous sensor,

average, on a time axis, the position error sequentially calculated for the second vehicle, and

correct the position of the second vehicle, based on an averaged position error.

2. The vehicle position detecting apparatus according to claim 1 , wherein the processor is further configured to adjust the position error, based on one of an elapse of time from and a traveling distance of the second vehicle from a time point at which the second vehicle is no longer detected by the autonomous sensor.

3. The vehicle position detecting apparatus according to claim 2 , wherein the processor performs a driving support control on the first vehicle, based on a corrected position of the second vehicle.

4. The vehicle position detecting apparatus according to claim 3 , wherein the processor performs the driving support control based on any of control levels that are different depending on a traveling position of the second vehicle.

5. The vehicle position detecting apparatus according to claim 1 , wherein the processor is configured to adjust the position error, based on one of an elapse of time from and a traveling distance of the second vehicle from a time point at which the second vehicle is no longer detected by the autonomous sensor.

6. The vehicle position detecting apparatus according to claim 5 , wherein the processor performs a driving support control on the first vehicle, based on a corrected position of the second vehicle.

7. The vehicle position detecting apparatus according to claim 6 , wherein the processor performs the driving support control based on any of control levels that are different depending on a traveling position of the second vehicle.

8. The vehicle position detecting apparatus according to claim 1 , wherein the processor performs a driving support control on the first vehicle, based on a corrected position of the second vehicle.

9. The vehicle position detecting apparatus according to claim 8 , wherein the processor performs the driving support control based on any of control levels that are different depending on a traveling position of the second vehicle.

10. The vehicle position detecting apparatus according to claim 1 , wherein the processor performs a driving support control on the first vehicle, based on a corrected position of the second vehicle.

11. The vehicle position detecting apparatus according to claim 10 , wherein the processor performs the driving support control based on any of control levels that are different depending on a traveling position of the second vehicle.