Method and apparatus for adjusting acquisition assistance data received by a mobile receiver from a server
AssigneeGlobal Locate, Inc.
InventorsCharles Abraham, Frank van Diggelen
Life of this patent
Estimating the term…
Abstract
Method and apparatus for adjusting acquisition assistance data received by a mobile receiver from a server is described. In one example, pseudoranges are measured from the mobile receiver to a set of satellites. Line-of-sight data is obtained with respect to the mobile receiver and the set of satellites. The pseudoranges and the line-of-sight data are processed to compute updates for an initial position associated with the acquisition assistance data and a correlator clock bias associated with the pseudoranges. The acquisition assistance data is then adjusted using the updates and the line-of-sight data.
Claims24
A method of adjusting acquisition assistance data received by a mobile receiver from a server, comprising:
- measuring pseudoranges from said mobile receiver to a set of satellites;
- obtaining line-of-sight data with respect to said mobile receiver and said set of satellites;
- processing said pseudoranges and said line-of-sight data to compute updates for an initial position associated with said acquisition assistance data and correlator clock bias associated with said pseudoranges;
- and
- adjusting said acquisition data using said updates and said line-of-sight data.
A mobile receiver, comprising:
- a wireless transceiver for receiving acquisition assistance data from a server;
- a satellite signal receiver for measuring pseudoranges from said mobile receiver to a set of satellites;
- and
- a processor for obtaining line-of-sight data with respect to said mobile receiver and said set of satellites, processing said pseudoranges and said line-of-sight data to compute updates for an initial position associated with said acquisition assistance data and correlator clock bias associated with said satellite signal receiver, adjusting said acquisition data using said updates and said line-of-sight data.
Apparatus for adjusting acquisition assistance data received by a mobile receiver from a server, comprising:
- means for measuring pseudoranges from said mobile receiver to a set of satellites;
- means for obtaining line-of-sight data with respect to said mobile receiver and said set of satellites;
- means for processing said pseudoranges and said line-of-sight data to compute updates for an initial position associated with said acquisition assistance data and correlator clock bias associated with said pseudoranges;
- and
- means for adjusting said acquisition data using said updates and said line-of-sight data.
Dependencies are inferred from the claim text.