US 11,733,392 B2
Method for ascertaining at least one piece of integrity information relating to a location result of a GNSS-based location device of a vehicle in the event of an abruptly and significantly changing GNSS reception situation
Alexander Metzger, Rottenacker (DE); Lena Schindler, Gerlingen (DE); Marco Limberger, Ludwigsburg (DE); Mohammad Tourian, Stuttgart (DE); and Thomas Friederichs, Aspach-Hohrot (DE)
Assigned to Robert Bosch GmbH, Stuttgart (DE)
Filed by Robert Bosch GmbH, Stuttgart (DE)
Filed on Oct. 19, 2021, as Appl. No. 17/504,593.
Claims priority of application No. 10 2020 213 320.4 (DE), filed on Oct. 22, 2020.
Prior Publication US 2022/0128705 A1, Apr. 28, 2022
Int. Cl. G01S 19/25 (2010.01); G01S 19/31 (2010.01)
CPC G01S 19/252 (2013.01) [G01S 19/31 (2013.01)] 11 Claims
OG exemplary drawing
 
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%.