Results 211 to 220 of about 3,052 (255)
Integer Ambiguity Resolution with Nonlinear Geometrical Constraints [PDF]
, 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 ...
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A comparison of three PPP integer ambiguity resolution methods
GPS Solutions, 2013Precise point positioning (PPP) integer ambiguity resolution with a single receiver can be achieved using advanced satellite augmentation corrections. Several PPP integer ambiguity resolution methods have been developed, which include the decoupled clock model, the single-difference between-satellites model, and the integer phase clock model.
Yang Gao, Junbo Shi, Shi Junbo
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First Results Of Glonass-Only Cdma+Fdma Integer Ambiguity Resolution [PDF]
2020 European Navigation Conference (ENC), 2020 In [1] a new integer-estimable GLONASS FDMA model was introduced. The new model is generally applicable and guarantees, independent of the actual channel number entries, the integer-estimability of the new GLONASS ambiguities. As the model has a close resemblance with CDMA models, available CDMA software is easily modified and existing methods of ...
Peter J. G. Teunissen +2 more
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Integer aperture ambiguity resolution based on difference test
Journal of Geodesy, 2015Carrier-phase integer ambiguity resolution (IAR) is the key to highly precise, fast positioning and attitude determination with Global Navigation Satellite System (GNSS). It can be seen as the process of estimating the unknown cycle ambiguities of the carrier-phase observations as integers. Once the ambiguities are fixed, carrier phase data will act as
Wu Meiping
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An integer ambiguity resolution algorithm for real-time GPS attitude determination
Applied Mathematics and Computation, 2002zbMATH Open Web Interface contents unavailable due to conflicting licenses.
SungPil Yoon, John B. Lundberg
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Integer Ambiguity Resolution by Mixture Kalman Filter for Improved GNSS Precision
IEEE Transactions on Aerospace and Electronic Systems, 2020Accurate carrier-phase integer ambiguity resolution is fundamental to high-precision global navigation satellite systems (GNSSs). Real-time GNSSs typically resolve the ambiguities by a combination of recursive estimators and integer least-squares solvers, which need to be reset when satellites are added or cycle slip occurs. In this article, we propose
Stefano Di Cairano, Karl Berntorp
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Fast integer ambiguity resolution for GPS attitude determination [PDF]
Guidance, Navigation, and Control Conference and Exhibit, 1999 In this paper, a new algorithm for GPS (Global Positioning System) integer ambiguity resolution is shown. The algorithm first incorporates an instantaneous (static) integer search to significantly reduce the search space using a geometric inequality.
E. Lightsey, John Crassidis, F. Markley
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Improvement of PPP-inferred tropospheric estimates by integer ambiguity resolution
Advances in Space Research, 2012Abstract Integer ambiguity resolution in Precise Point Positioning (PPP) can improve positioning accuracy and reduce convergence time. The decoupled clock model proposed by Collins (2008) has been used to facilitate integer ambiguity resolution in PPP, and research has been conducted to assess the model’s potential to improve positioning accuracy ...
J. Shi, Y. Gao
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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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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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