CPC G01S 19/252 (2013.01) [G01S 19/31 (2013.01)] | 11 Claims |
1. A method for adapting an ascertainment of a protection level of a GNSS-based location device of a vehicle, the method comprising:
a) ascertaining a current ego position of the vehicle using the GNSS-based location device;
b) ascertaining the protection level relating to the ascertained ego position using the GNSS-based location device;
c) detecting a GNSS reception situation that is abruptly and significantly changing; and
d) adapting the ascertainment of the protection level based on the detection of the GNSS reception situation,
wherein the abrupt change is a change that takes place over a period of sixty seconds or less, and
wherein the significant change is a change in the GNSS reception situation by at least 50%.
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