Patent ID: 7961145
Filing Date: 2011-06-14
Classification: G01S

Abstract:
1. A method for estimating a position of a first receiver relative to a second receiver in a global navigation satellite system, the method comprising: obtaining a first set of measurements from the first receiver, the first set of measurements estimating a first set of distances between the first receiver and a plurality of satellites in the global navigation satellite system; obtaining a second set of measurements from the second receiver, the second set of measurements estimating a second set of distances between the second receiver and the plurality of satellites in the global navigation satellite system; performing a time domain recursive filtering in accordance with the first set of measurements and the second set of measurements, wherein the time domain recursive filtering produces a set of double difference float ambiguities, each double difference float ambiguity in the set of double difference float ambiguities being averaged over a period of time; and estimating the position of the first receiver relative to the second receiver in accordance with the time domain recursive filtering, wherein at least one of: the obtaining the first set of measurements, the obtaining the second set of measurements, the performing, or the estimating is performed by a processor.