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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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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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First Results Of Glonass-Only Cdma+Fdma Integer Ambiguity Resolution
2020 European Navigation Conference (ENC), 2020In [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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Fast integer ambiguity resolution for GPS attitude determination
Guidance, Navigation, and Control Conference and Exhibit, 1999In 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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Improved Integer Ambiguity Resolution Technique for Fixed Arrays
Journal of Guidance, Control, and Dynamics, 2005A method for quickly and accurately determining the integer ambiguities associated with carrier phase measurements on a rigid antenna array is presented. Residuals generated from the difference between the global positioning system measurements and the hypothesized value have been used in the multiple-hypothesis Wald sequential probability test (MHWSPT)
Jonathan D. Wolfe, Jason L. Speyer
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A GNSS integer ambiguity resolution method based on ambiguity domain search strategy
2016 IEEE International Conference on Electronic Information and Communication Technology (ICEICT), 2016A new integer ambiguity resolution method is proposed to solve influence caused by Ambiguity real solutions accuracy and high dimensions on LAMBDA search strategy. Its search efficiency is very close to bootstrap algorithm and the success rate is higher. The reason is that the new method set reasonable number of ambiguity reservation number.
Zheng Dou +3 more
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Modified weighted integer least squares estimations for GNSS integer ambiguity resolution
Survey Review, 2013In this contribution, modified versions of Agrell, Eriksson, Vardy, Zeger (AEVZ) algorithms for integer ambiguity resolution of GNSS phase observations are presented. This modification removes many redundant mathematical operations of the AEVZ algorithm based on a recursive function.
S. Jazaeri +2 more
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High reliability integer ambiguity resolution of 6DOF RTK GPS/INS
53rd IEEE Conference on Decision and Control, 2014This article presents a Contemplative Realtime (CRT) framework to resolve a vector of carrier phase integer ambiguities existing in Real-Time Kinematic GPS aided inertial navigation systems (RTK GPS/INS). Within this CRT framework, a Maximum-a-Posteriori (MAP) estimation method is derived to represent the RTK GPS/INS problem, and solved by Nonlinear ...
Yiming Chen 0001 +3 more
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Robustness of GNSS integer ambiguity resolution in the presence of atmospheric biases
GPS Solutions, 2013Both the underlying model strength and biases are two crucial factors for successful integer GNSS ambiguity resolution (AR) in real applications. In some cases, the biases can be adequately parameterized and an unbiased model can be formulated. However, such parameterization will, as trade-off, reduce the model strength as compared to the model in ...
Li, Bofeng +2 more
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Improving GNSS data analysis with undifferenced integer ambiguity resolution
2023Along with other space geodetics, the Global Navigation Satellite Systems (GNSS) technique has a profound impact on the realization of terrestrial reference frames and the provision of geodetic and geophysical parameters such as Earth Rotation Parameters (ERP) and geocenter (GCC) coordinates.
Longjiang Tang +5 more
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