Method and apparatus for mitigating multipath effects at a satellite signal receiver using a sequential estimation filter
First Claim
Patent Images
1. A method for mitigating multipath effects in a satellite-signal receiver, comprising:
- computing at least one pseudorange residual as a function of a measured pseudorange to a given satellite and an expected pseudorange to the given satellite, wherein the expected pseudorange is derived by mathematically projecting a pseudorange to the given satellite; and
when the pseudorange residual satisfies a given threshold, applying the measured pseudorange to a sequential-estimation filter for solving a navigation-solution problem.
5 Assignments
0 Petitions
Accused Products
Abstract
A method and apparatus for mitigating multipath effects in a satellite signal receiver is described. The method includes computing at least one pseudorange residual as a function of (i) a measured pseudorange to a given satellite, and (ii) an expected pseudorange to the given satellite, which is derived by mathematically projecting a pseudorange to the given satellite. The method also includes applying the measured pseudorange to a sequential-estimation filter, which is configured to solve a navigation-solution problem, when the pseudorange residual satisfies a given threshold.
-
Citations
22 Claims
-
1. A method for mitigating multipath effects in a satellite-signal receiver, comprising:
-
computing at least one pseudorange residual as a function of a measured pseudorange to a given satellite and an expected pseudorange to the given satellite, wherein the expected pseudorange is derived by mathematically projecting a pseudorange to the given satellite; and when the pseudorange residual satisfies a given threshold, applying the measured pseudorange to a sequential-estimation filter for solving a navigation-solution problem. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. An apparatus for mitigating multipath effects in a satellite-signal receiver, comprising:
-
memory operable to store executable instructions; and a processor operable to obtain from the memory the executable instruction and execute the executable instructions to; compute at least one pseudorange residual as a function of a measured pseudorange to a given satellite and an expected pseudorange to the given satellite, wherein the expected pseudorange is derived by mathematically projecting a pseudorange to the given satellite; and apply the measured pseudorange to a sequential-estimation filter for solving a navigation-solution problem when the pseudorange residual satisfies a given threshold. - View Dependent Claims (15, 16, 17, 18, 19, 20)
-
-
21. A mobile device, comprising:
-
a satellite signal receiver operable to process signals from at least one satellite to obtain a measured pseudorange; and a processor operable to compute at least one pseudorange residual as a function of a measured pseudorange to a given satellite and an expected pseudorange to the given satellite, wherein the expected pseudorange is derived by mathematically projecting a pseudorange to the given satellite; and
to apply the measured pseudorange to a sequential-estimation filter for solving a navigation-solution problem when the pseudorange residual satisfies a given threshold. - View Dependent Claims (22)
-
Specification