| 主权项 |
1. A method for measuring a position of a surface of a vehicle on a roadway, comprising the steps:
a) transmitting a first radar beam from a transmitting position above the plane of the roadway in a first primary transmitting direction inclined downwardly at an angle, receiving a first reflected radar beam at a receiving position above the plane of the roadway in a first primary receiving direction inclined downwardly at an angle, and converting the first reflected radar beam into a first received signal, wherein the transmitting position and the receiving position are distanced from one another and the first primary transmitting direction and the first primary receiving direction lie in a common plane; b) transmitting a second radar beam from the transmitting position in a second primary transmitting direction inclined downwardly at an angle, receiving a second reflected radar beam at the receiving position in a second primary receiving direction inclined downwardly at an angle, and converting the second reflected radar beam into a second received signal, wherein the second primary transmitting direction and the second primary receiving direction lie in said common plane; c) selecting the received signal having the greatest signal strength; and d) determining the said position from the transmitting and receiving positions and from the primary transmitting and primary receiving directions of the received signal having the greatest signal strength; wherein steps a) and b) are carried out either chronologically in succession or at the same time. |
