| 摘要 |
The invention relates to a device and to a method for determining the position of a vehicle on or above a planet surface. The proposed device comprises a first means (101) for determining a first position (P1(t)) of the vehicle, a second means (102) for determining a movement direction (BR(t)) of the vehicle, a third means (103) for providing a number (n) of fixed point data, wherein the fixed point data specify, at least for significant radar objects (FROi) arranged in a stationary manner on the planet surface, the radar signature (RSFROi) thereof and the position (PFROi) thereof, where i=1, 2, . . . , n, a radar system (104) with a radar sensor arranged on the vehicle for scanning a current surrounding area of the vehicle by means of radio-frequency radiation and for continuously detecting radar data obtained in the process, wherein, for a number m of radar objects (ROk(t)) present in the surrounding area, the radar signatures (RSk(t)) thereof and the relative positions (ΔPOk(t) thereof in relation to the vehicle can be determined from the radar data, where k=0, 1, 2, . . . , m, and wherein the radar system (104) is configured and set up to determine a second position (P2(t)), and the first means (101) is configured and set up in such a way that the first position (P1(t)) of the vehicle can be corrected on the basis of the determined second position (P2(t)) and/or a position warning can be issued if the first position (P1(t)) and the second position (P2(t)) differ from one another by more than a predefined limit value. |
| 主权项 |
1. A device for determining a position of a vehicle on or above a planet surface, the device comprising:
a first means for determining a first position (P1(t)) of the vehicle; a second means for determining a movement direction (BR(t)) of the vehicle; a third means for providing a number n of fixed point data, wherein the fixed point data specify, at least for significant radar objects FROi arranged in a stationary manner on the planet surface, radar signature RSFROi thereof and position (PFROi) thereof, where i=1, 2, . . . , n; a radar system with a radar sensor arranged on the vehicle for scanning a current surrounding area of the vehicle using radio-frequency radiation and for continuously detecting radar data obtained, wherein, for a number m of radar objects ROk(t) present in the surrounding area, radar signatures RSk(t) thereof and relative positions ΔPOk(t) thereof in relation to the vehicle are determinable from the radar data, where k=0, 1, 2, . . . , m, and wherein the radar system is configured and set up in such a way that
in the fixed point data, depending on the first position P1(t), from the radar objects FROi, those radar objects FROi* with the associated radar signatures RSFROi* and positions PFROi* are determinable whose positions PFROi* are in a predeterminable area, depending on the movement direction BR(t), around the current first position P1(t) of the vehicle,the radar signatures RSFROi* of the radar objects FROi* are compared with the radar signatures RSk(t) of the radar objects ROk(t), and those radar objects ROk(t)* for which RSk(t)=RSFROi* are determinable, wherein, if this condition is met, it is assumed that ROk(t)*=FROi* for the radar objects, and PROk(t)*=PFROi* for positions PROk(t)* of the radar objects ROk(t)*,on the basis of the radar data, the relative positions ΔPOk(t)* of the respective radar objects ROk(t)* relative to the vehicle are determined, andon the basis in each case of the positions PROk(t)*=PFROi* and of the relative positions ΔPOk(t)*, a second position P2(t) of the vehicle is determined; and wherein the first means is configured and set up in such a way that the first position P1(t) of the vehicle is correctable on the basis of the determined second position P2(t) and/or a position warning is issuable if the first position P1(t) and the second position P2(t) differ from one another by more than a predetermined limit value. |
