Position determination based on hybrid pseudorange solution data
AssigneeTrimble Navigation Limited
InventorsJim Green, Shawn Weisenburger
Life of this patent
Estimating the term…
Abstract
Embodiments provided herein recite methods and systems for position determination based on hybrid pseudorange solution data. In one embodiment, navigation satellite system (NSS) pseudorange data is received for high yield pseudoranges. In addition, NSS pseudorange data is received for high accuracy pseudoranges. The high accuracy pseudoranges and selected ones of the high yield pseudoranges utilized by a hybrid PVT processor to determine a hybrid NSS-based location solution.
Claims30
A method for hybrid position determination, comprising:
- receiving navigation satellite system (NSS) pseudorange data from a first GNSS receiver configured to provide high yield pseudoranges;
- receiving NSS pseudorange data from a second GNSS receiver configured to provide high accuracy pseudoranges;
- and
- utilizing the high accuracy pseudoranges and selected ones of the high yield pseudoranges at a hybrid PVT processor to determine a hybrid NSS-based location solution.
A navigation satellite system (NSS) position determination system comprising:
- a NSS high accuracy module for determining a high accuracy pseudorange solution based on a portion of a positioning signal;
- a NSS high yield module for determining a high yield pseudorange solution based on said positioning signal;
- a hybrid solution module for receiving pseudorange input from both the NSS high accuracy module and the NSS high yield module, the hybrid solution module providing a hybrid pseudorange solution;
- and
- a position provider outputting the hybrid pseudorange solution to said NSS high accuracy module and said NSS high yield module.
A method for providing a bias adjustment when generating a hybrid navigation satellite system (NSS) position fix, said method comprising:
- calculating a compensating bias by subtracting a high yield pseudorange from a high accuracy pseudorange for a same satellite for each of an NSS bit timing epoch;
- forming an adjusted high yield pseudorange by adding the compensation bias to each high yield pseudorange;
- calculating an NSS-hybrid position fix using said adjusted high yield pseudoranges and available high accuracy pseudoranges.
Dependencies are inferred from the claim text.