专利名称：GNSS signal processing methods and
apparatus with ambiguity selection
发明人：Ulrich Vollath申请号：US13059463申请日：20090805公开号：US08830121B2公开日：20140909
专利附图：
摘要：Methods and apparatus are provided for estimating parameters, i.e. ambiguities,derived from GNSS signals. Observations of a GNSS signal from each of a plurality ofGNSS satellites are obtained (). The observations are fed to a filter having a state vector
at least comprising a float ambiguity for each received frequency of the GNSS signals,each float ambiguity constituting a real number estimate associated with an integernumber of wavelengths of the GNSS signal between a receiver of the GNSS signal and theGNSS satellite from which it is received, and the filter being for estimating a float valuefor each float ambiguity of the state vector (). A subset of float ambiguities of the statevector is selected (). Integer values are assigned to the estimated float values of the floatambiguities of the subset to define a plurality of integer ambiguity candidate sets (). Aquality measure is determined for each of the candidate sets. A weighted average of thecandidate sets is formed (). Ambiguities of the weighted average can be used in
subsequent operations to aid in determining a position of the receiver or can be used toprepare data, e.g., in a network processor that can be used to augment positioninformation of a rover.
申请人：Ulrich Vollath
地址：Ismaning DE
国籍：DE
代理人：Bruce D Riter
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