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Integer Ambiguity Estimation for Satellite Navigation
IEEE Transactions on Signal Processing, 2012 Carrier phase measurements of pseudoranges often allow for millimeter precision. The periodic nature of the carrier phase, however, leads to integer ambiguities. These ambiguities need to be resolved for accurate positioning. Blewitt and Teunissen provide two methods for the associated estimation process.
Christoph GÜNTHER, Patrick Henkel
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Integer Ambiguity Resolution with Nonlinear Geometrical Constraints
, 2011 Integer ambiguity resolution is the key to obtain very accurate positioning solutions out of the GNSS observations. The Integer Least Squares (ILS) principle, a derivation of the least-squares principle applied to a linear system of equations in which some of the unknowns are subject to an integer constraint, was demonstrated to be optimal among the ...
Giorgi, G +3 more
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GNSS Integer Ambiguity Estimation and Evaluation: LAMBDA and Ps-LAMBDA
, 2013 Civil Engineering and ...
Li, Bofeng +2 more
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INS aided GPS integer ambiguity resolution
2011 IEEE International Conference on Control Applications (CCA), 2011Real-time high precision GPS positioning is based on carrier phase measurements, which requires fast and precise on-the-fly integer ambiguity resolution. In some navigation applications, external sensors are available that provide auxiliary measurements.
Anning Chen +3 more
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Integer aperture bootstrapping: a new GNSS ambiguity estimator with controllable fail-rate [PDF]
Journal of Geodesy, 2005 In this contribution, we introduce a new bootstrap-based method for Global Navigation Satellite System (GNSS) carrier-phase ambiguity resolution. Integer bootstrapping is known to be one of the simplest methods for integer ambiguity estimation with close-
Peter J G Teunissen
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Aided integer ambiguity resolution algorithm
PLANS 2004. Position Location and Navigation Symposium (IEEE Cat. No.04CH37556), 2004The key issue in precise positioning using the GPS carrier phase is to solve for the integer ambiguities quickly and correctly. For some navigation applications, external sensors am available that provide auxiliary measurements. For example, in the control and guidance of land vehicles relative to a desired trajectory (e.g., lane-keeping on a highway ...
null Jingrong Cheng +3 more
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On the Reliability of Integer Ambiguity Resolution
Navigation, 2005Global Navigation Satellite System (GNSS) carrier-phase observations are ambiguous by an unknown, integer number of cycles. These integer ambiguity parameters need to be resolved before carrier-phase observations can begin to serve as very precise pseudorange measurements. Optimal estimation of the integer ambiguities involves a complex mapping of real-
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Ambiguity of integer sequences and application
Proceedings of 1994 IEEE International Symposium on Information Theory, 2002We present an algorithm which solves in polynomial time the problem of the ambiguity of integer sequences. This is done by introducing a suitable transformation from F/sub 2//sup n/ to {-1,0,1}/sup n/ and by the search of a short vector in a reduced lattice according to the L/sup 3/ algorithm.
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Integer ambiguity resolution in phase closure imaging
Journal of the Optical Society of America A, 2001Phase calibration is the key operation of phase closure imaging. In the case of nonredundant arrays, the related problem amounts to finding the node of a Z lattice closest to the end of a vector, the components of which are the differences between the closure phases of the data and those of the model.
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