US 9,810,790 B2
Method for evaluating a satellite signal in a global navigation satellite system with respect to a multipath error, receiver for a global navigation satellite system and motor vehicle
Andreas Tollkühn, Ingolstadt (DE); Florian Mickler, Ingolstadt (DE); and Anton Beitler, Zürich (CH)
Assigned to Audi AG, Ingolstadt (DE)
Appl. No. 15/508,840
Filed by Audi AG, Ingolstadt (DE)
PCT Filed Aug. 18, 2015, PCT No. PCT/EP2015/001694
§ 371(c)(1), (2) Date Mar. 3, 2017,
PCT Pub. No. WO2016/034267, PCT Pub. Date Mar. 10, 2016.
Claims priority of application No. 10 2014 013 209 (DE), filed on Sep. 6, 2014.
Prior Publication US 2017/0276794 A1, Sep. 28, 2017
Int. Cl. G01S 19/22 (2010.01)
CPC G01S 19/22 (2013.01) 13 Claims
OG exemplary drawing
 
1. A method for evaluating a satellite signal in a global navigation satellite system with regard to a multipath error within a framework of a position determination from satellite signals of several satellites, the method comprising:
determining, at a receiver, a run-time gap based on a run-time measurement between the receiver and a first satellite;
determining a carrier-phase gap based on a carrier-phase measurement between the receiver and a reference point;
forming, at the receiver, an evaluation variable from a difference of a time derivative of the run-time gap and of the carrier-phase gap; and
evaluating a presence of a multipath error by applying a multipath criterion to the evaluation variable;
wherein the run-time gap is derived from a satellite signal of the first satellite and the carrier-phase gap is determined from a second satellite that is distinct from the first satellite, wherein the second satellite is a reference satellite having a low multipath error.