Parking garage environment detection and EHPE determination for vehicular navigation
First Claim
Patent Images
1. A method, implemented at a telematics unit of a vehicle, for calculating an estimated horizontal position error (EHPE) of a position of a vehicle, where the position of the vehicle is provided by a dead reckoning (DR) engine, the method comprising:
- determining that the vehicle is operating within a parking garage;
triggering, in association with determining that the vehicle is operating within a parking garage, a parking garage mode for calculating an EHPE for the position of the vehicle provided by a DR engine; and
calculating, according to the parking garage mode for calculating the EHPE, the EHPE for the position of the vehicle provided by the DR engine,wherein the parking garage mode for calculating an EHPE differs from at least one other mode for calculating an EHPE by the DR engine.
3 Assignments
0 Petitions
Accused Products
Abstract
Implementations of the present invention contemplate obtaining a more accurate estimated horizontal position error (EHPE) under conditions in which the telematics unit of a vehicle cannot receive GNSS signals. In particular, the invention contemplates determining that a vehicle is entering a parking garage and obtaining a more accurate estimated horizontal position error (EHPE) of the vehicle in the parking garage when GNSS signals are unavailable.
8 Citations
20 Claims
-
1. A method, implemented at a telematics unit of a vehicle, for calculating an estimated horizontal position error (EHPE) of a position of a vehicle, where the position of the vehicle is provided by a dead reckoning (DR) engine, the method comprising:
-
determining that the vehicle is operating within a parking garage; triggering, in association with determining that the vehicle is operating within a parking garage, a parking garage mode for calculating an EHPE for the position of the vehicle provided by a DR engine; and calculating, according to the parking garage mode for calculating the EHPE, the EHPE for the position of the vehicle provided by the DR engine, wherein the parking garage mode for calculating an EHPE differs from at least one other mode for calculating an EHPE by the DR engine. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A non-transitory computer readable medium having stored thereon a set of computer executable instructions for calculating the estimated horizontal position error (EHPE) of a position of a vehicle, wherein the position of the vehicle is provided by a dead reckoning (DR) engine, the set of instructions comprising instructions for:
-
determining that the vehicle is operating within a parking garage; triggering, in association with determining that the vehicle is operating within a parking garage, a parking garage mode for calculating an EHPE for the position of the vehicle provided by a DR engine; and calculating, according to the parking garage mode for calculating the EHPE, the EHPE for the position of the vehicle provided by the DR engine, wherein the parking garage mode for calculating an EHPE differs from at least one other mode for calculating an EHPE by the DR engine. - View Dependent Claims (12, 13, 14, 15, 16, 17)
-
-
18. A telematics unit configured to receive GNSS signals and to determine the position of a vehicle through dead reckoning (DR) techniques when it is unable to receive GNSS signals, the telematics unit comprising:
-
a non-transitory computer-readable medium including computer-executable instructions; and a processor configured to execute the computer-executable instructions to perform a method comprising; determining that the vehicle is operating within a parking garage; triggering, in association with determining that the vehicle is operating within a parking garage, a parking garage mode for calculating an estimated horizontal position error (EHPE) for the position of the vehicle provided by a DR engine; and calculating, according to the parking garage mode, the EHPE for the position of the vehicle provided by the DR engine, wherein the parking garage mode for calculating an EHPE differs from at least one other mode for calculating an EHPE by the DR engine. - View Dependent Claims (19, 20)
-
Specification