发明名称 |
UNIT AND METHOD FOR IMPROVING POSITIONING ACCURACY |
摘要 |
A unit for improving positioning accuracy of an autonomous vehicle driving on a road includes a first computation unit configured to compute a first position of the vehicle at a time T1 using data from at least an inertial measurement unit (IMU); a second computation unit configured to compute a second position of the vehicle at the time T1 using data from at least one external sensor and a map; a comparison unit configured to compute a position difference between the computed first and second positions; a correction unit configured to correct an error parameter of the IMU, wherein the error parameter is used for correcting a third position of the vehicle computed by the first computation unit at a time T2 with the computed position difference at time T1, if the second computation unit is unable to compute a fourth position of the vehicle at the time T2. |
申请公布号 |
US2016377437(A1) |
申请公布日期 |
2016.12.29 |
申请号 |
US201615180488 |
申请日期 |
2016.06.13 |
申请人 |
VOLVO CAR CORPORATION |
发明人 |
BRANNSTROM Mattias Erik;SORSTEDT Joakim Lin;KARLSSON Peter |
分类号 |
G01C21/16;G05D1/02 |
主分类号 |
G01C21/16 |
代理机构 |
|
代理人 |
|
主权项 |
1. A unit for improving positioning accuracy of an autonomous vehicle driving on a road, the unit comprising:
a first computation unit configured to compute a first position of the vehicle on the road at a time T1 using data from at least an inertial measurement unit (IMU); a second computation unit configured to compute a second position of the vehicle on the road at the time T1 using data from at least one external sensor and a map; a comparison unit configured to compute a position difference between the computed first position and the computed second position; a correction unit configured to correct an error parameter of at least the IMU, wherein the error parameter is usable for correcting a third position of the vehicle computed by the first computation unit at a time T2 with the computed position difference at time T1, if the second computation unit is unable to compute a fourth position of the vehicle at the time T2; and a positioning unit configured to decide the position of the vehicle on the road. |
地址 |
Gothenburg SE |